JPH0531526U - Brush cutter - Google Patents

Abstract

(57) [Abstract] [Purpose] The rotation of the rotary blade does not cause the rotary blade to be damaged by hitting pebbles, wires, metal pieces, etc., and the pebbles, wires, metal pieces, etc. are not scattered, and the standing tree is damaged. It is an object of the present invention to provide a brush cutter capable of smoothly brushing weeds and the like at a constant height. [Construction] In a brush cutter for arranging a rotary blade at the tip of an operation pipe and rotating the rotary blade to mow weeds, etc., a rotary blade with a radially outer protruding outer edge is larger than the outer circumference of the rotary blade is used. The brush cutter is arranged in a rotatable manner in a gear case on the upper surface of the rotary blade, a stabilizer is provided on the lower surface of the rotary blade, and a part of the stabilizer is connected to a guard plate by a connecting plate.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a brush cutter for brushing overgrown weeds, and more particularly to a brush cutter for brushing grass at a constant length without damaging standing trees or damaging rotary blades.

[0002]

[Prior Art]

 In a conventional brush cutter, for example, as shown in FIG. 7, a prime mover 32 is fixed to a base portion of an operation pipe 31 made of a light alloy or the like, a handle 33 is attached to a base portion side of the operation pipe 31, and the operation pipe 31 is attached. A gear case 34 is connected to the tip of the gear case 34, and a rotary blade 35 is disposed below the gear case 34. Then, the rotation of the prime mover 32 is transmitted to the rotation transmitting means in the gear case 34 by a connecting rod (not shown) inserted in the operation pipe 31, and the rotary blade 35 is rotated by the rotation transmitting means. By the rotation of the rotary blade 35, weeding work for weeds and the like is performed.

[0003]

[Problems to be solved by the device]

 As shown in Fig. 7, because the rotary blade 35 is exposed, it hits small stones or wires or metal pieces that are falling during the work, and the rotary blade 35 is damaged or pebbles, wires or metal pieces scatter. Occasionally an accident could be caused to workers or people around them. Moreover, the standing tree was touched during the work, and the standing tree was sometimes damaged. Furthermore, it was difficult to mow at a certain height because the rotary blade was operated with the blade slightly suspended in the air.

The present invention has been made in view of the above problems, and the rotation of the rotary blade causes the stone to be hit by pebbles, wire, metal pieces, or the like, or the stone may be broken, or the stone, wire, or metal may be damaged. A brush cutter that can smoothly mow weeds etc. at a certain height without scattering pieces or the like to injure workers or others around them and without damaging standing trees. The purpose is to serve.

[0005]

[Means for Solving the Problems]

 This invention was made in order to achieve the above-mentioned object, and in a brush cutter for arranging a rotary blade at the tip of an operation pipe and rotating the rotary blade to mow weeds, etc. A guard plate with a diameter larger than the outer circumference of the rotary blade is rotatably arranged in the gear case on the upper surface of the rotary blade, and a stabilizer is provided on the lower surface of the rotary blade. It becomes a brush cutter connected to a guard plate by a connecting plate.

[0006]

[Action]

 For example, even if foreign matter such as pebbles, wires, metal pieces, etc. is present in the grass field to be mowed, the mowing work is continued without directly contacting the rotary blade 5 against the guard plate 11 having a large outer shape while rotating. . Further, in the case of a standing tree, similarly, the guard plate 11 having a large outer shape rolls along the standing tree in the horizontal direction and the cutting work is continued without damaging the standing tree. Further, the stable platen 12 is grounded and mowed, so that the mowing operation can be smoothly performed at a constant height.

[0007]

【Example】

 Hereinafter, embodiments of the brush cutter according to the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view showing an example of an embodiment of the brush cutter according to the present invention. In FIG. 1, a brush cutter A according to the present invention is equipped with an operation pipe 1 made of light alloy, stainless steel, etc., a prime mover 2 fixed to the base end of the operation pipe 1, and a base side of the operation pipe 1. The handle 3 is connected to the operation pipe 1, the gear case 4 is connected to the tip of the operation pipe 1, and the rotary blade 5 is connected to the lower surface of the gear case 4.

A connecting rod 6 for transmitting the rotation of the prime mover 2 to a rotation transmitting means 4a such as a bevel gear in a gear case 4 is inserted in the operation pipe 1 as usual, and a cable 8 for an accelerator 7 is inserted. Is installed alongside. Grips 9, 9 are inserted on both sides of the handle 3, and an accelerator lever 7a is attached to one of the grips 9.

FIG. 2 is an enlarged plan view of the tip of the brush cutter A. 3 is a bottom view of FIG. 2, and FIG. 4 is an enlarged cross-sectional view of the tip of the brush cutter A. 2 to 4, the gear case 4 is provided with a receiving pipe 4b for inserting and fixing the tip of the operation pipe 1, and connects the operation pipe 1. The rotary blade 5 is connected to a rotation transmitting means 4a such as a bevel gear by a bolt 10 and has a structure for transmitting the rotation of the prime mover 2. Further, the ring plate 17 holds the inner peripheral edge 11a of the guard plate 11 in the gear case 4 in a rotatable state. An outer peripheral portion of the guard plate 11 radially projects, and a tip of the guard plate 11 projects from the outer periphery of the rotating blade 5 on the lower surface.

Below the rotary blade 5, a stabilizer 12 is arranged as shown in FIGS. 3 and 4. The stabilizing plate 12 is tacked to the guard plate 11 by connecting plates 13 having a U-shaped cross section. The stabilizer 12 has a ring shape with a hole in the center so that the rotary blade 5 can be bolted. The connecting plate 13 may be integrated with the stabilizer 12 or the guard plate 11. Further, the two connecting plates 13 need not be symmetrically installed as in the embodiment, and may be three or four, for example.

FIG. 5 is an explanatory plan view showing a state in which weeds and the like around a standing tree are mowed by the bush cutter A. Further, FIG. 6 is a front view for explanation. As shown in FIG. 5, when there is a standing tree 14 at the place where the grass is to be cut, the cutting work is performed along the standing tree 14. Then, the outer line of the guard plate 11 contacts the standing tree 14 and rotates, and the standing blade 14 is not damaged by the rotary blade 5. That is, when weeding the weeds 15 (see FIG. 6) on the right side of the standing tree 14, when moving forward from the front along the standing tree 14 in the direction of the solid line arrow at the position of the footprint 16 shown in the figure, the guard plate 11 Rotates counterclockwise, allowing smooth brush cutting work. Further, at the position of the footprint 16 shown in the drawing, if the guard plate 11 is moved forward from the front along the standing tree 14 in the direction of the one-dot chain line arrow, the guard plate 11 is rotated clockwise, and a smooth brushing operation can be performed. Then, as shown in FIG. 6, weeds can be mowed at a constant height h.

When the bush cutter A having the above-described structure is used for bush cutting work, for example, even if foreign matter such as pebbles, wire or metal pieces is present in the grass field to be bush clipped, the outer shape of the bush is reduced during rotation. The work is continued without hitting the large guard plate 11 and directly contacting the rotary blade 5. Similarly, in the case of a standing tree, the guard plate 11 having a large outer shape abuts the standing tree without damaging the standing tree, and the mowing work is continued. Further, the stable platen 12 is grounded and mowed, so that the mowing work can be smoothly performed at a constant height.

[0013]

[Effect of the device]

 As described above, in the brush cutter according to the present invention, the guard plate, which is larger than the rotary blade, is arranged above the rotary blade, and the stabilizer is arranged on the lower surface. Since it does not directly hit foreign objects such as pebbles, wires, metal pieces, etc., it is possible to prevent accidents such as damage to the rotary blade or scattering of pebbles or wires that could injure workers or others.

Further, during the mowing work, the guard plate does not touch the standing tree just before it touches the standing tree, and the standing tree is not damaged. In addition, a stabilizing plate that measures the stability of the mowing work and keeps the mowing height constant is installed at the bottom, so there is a practical effect such that the mowing is clean and the work can be done smoothly.

[Brief description of drawings]

FIG. 1 is a perspective view showing an example of an embodiment of a brush cutter according to the present invention.

FIG. 2 is an enlarged plan view of the tip of the brush cutter.

FIG. 3 is a bottom view of FIG.

FIG. 4 is an enlarged cross-sectional view of the tip of the brush cutter.

FIG. 5 is an explanatory plan view showing a state of weeding around a standing tree with a brush cutter.

FIG. 6 is an explanatory front view showing a state of the brush cutting work of FIG. 5;

FIG. 7 is a perspective view showing an example of a conventional brush cutter.

[Explanation of Codes] 1 Operation Pipe 2 Motor 3 Handle 4 Gear Case 4a Rotation Transmission Means 5 Rotating Blade 6 Connection Rod 7 Accelerator 7a Accelerator Lever 8 Cable 9 Grip 10 Bolt 11 Guard Plate 12 Stabilizer 13 Connection Plate 14 Standing Tree 15 Weed 16 Footprint 17 Ring Board A Mower

Claims (1)

[Scope of utility model registration request] 1. In a brush cutter for arranging a rotary blade at the tip of an operation pipe and rotating the rotary blade to mow weeds and the like, a guard plate having a radially outer peripheral end protruding larger than the outer periphery of the rotary blade is used. A cutting blade characterized by being rotatably arranged in a gear case on the upper surface of a rotary blade, a stabilizing plate being arranged on the lower surface of the rotating blade, and a part of the stabilizing plate being connected to a guard plate by a connecting plate. Payment machine.