JPH0660314U - Brush cutter - Google Patents

Abstract

(57) [Summary] [Purpose] To enable weeds to be safely mowed without the need for a protective cover on the brush cutter. [Structure] A cutter 2 provided under the tip of the main rod 1,
It was set to rotate clockwise when viewed from above.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a brush cutter used for cutting weeds and the like.

[0002]

[Prior art]

 Conventionally, the seed brush cutter shown in FIG. 3 is known. In the figure, a cutter 2 having a plurality of cutting blades 21 is provided on the lower surface side of the tip of the main rod 1, and an outer peripheral portion of the cutter 2 is projected toward the outside when the cutter 3 is rotated to remove stones or soft grass. A plurality of string members 22 for cutting off the above are attached, and a drive device for rotating the cutter 2 is provided on the other end side of the main rod 1.

Further, the cutter 2 is set so as to rotate counterclockwise when viewed from above, as indicated by an arrow X in the figure. When the above-mentioned brush cutter is used to mow weeds, the operator is positioned on the right side of the main rod 1, holds the handle 4, tilts the cutter 2 obliquely downward, and rotates the cutter 2. The cutting blade 21 and the string material 22 are used to mow weeds and the like.

[0004]

[Problems to be solved by the device]

 However, when the cutter 2 is set counterclockwise as in the conventional brush cutter, there are the following problems. That is, when weeding a weed with a brush cutter, while moving the cutter 2 in the direction of arrow F from the lower left side to the upper right side in FIG. 3, the cutter 2 moves to the left side in the moving direction F, that is, the work. Since weeds and the like on the side away from the person 10 are cut, the upper left diagonal portion (arrow A-A area) of the figure is the cutting area, and the lower right diagonal portion (arrow B-B). Area is the area after harvesting.

Therefore, weeds cut by the cutting blade 21 of the cutter 2 in the cutting area AA, stones scrubbed by the string material 22 and the like, as shown by an arrow C in FIG. The main rod 1 may be scattered from AA toward the worker 10 who is performing the mowing work, and scattered weeds or stones may hit the worker 10, and the cutter may be used. When 2 is broken during work, the cut portion of the cutter 2 scatters toward the worker 10. In order to avoid this, it is conceivable to attach a heavy-duty protective cover or the like separately to the outer peripheral portion of the cutter 2, but in that case, not only does the overall weight increase and workability deteriorates, The number of parts increases and the cost increases.

[0006] An object of the present invention is to provide a brush cutter that can safely mow weeds and the like without requiring a protective cover or the like.

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the brush cutter of the present invention is set so that the cutter rotates clockwise when viewed from above.

[0008]

[Action]

 By setting the cutter clockwise, when weeding it while moving it from the left side to the right side, when the weeds are mowed, the weeds are the opposite of the worker who holds the main rod. Therefore, it is possible to safely mow weeds and the like without separately providing a protective cover or the like.

[0009]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. The brush cutter shown in FIG. 1 is provided with a cutter 2 on the lower end side of the main rod 1 and an engine (driving device) 3 for driving the cutter 2 on the other end side of the main rod 1. A handle 4 held by an operator is provided at an intermediate portion of the main rod 1.

Further, in the figure, 5 is a fuel tank, 6 is a clutch housing, 7 is a drive shaft that is rotatably inserted in the main rod 1, and 8 is a plurality of parts provided on the upper side of the cutter 2. A transmission box containing gears, and the rotational power of the engine 3 is transmitted to the cutter 2 via the clutch in the housing 6, the drive shaft 7, and the gears in the transmission box 8.

Then, as shown by an arrow Y in FIGS. 1 and 2, the cutter 2 is set in a direction opposite to the conventional X direction so as to rotate clockwise when viewed from above. In this setting, the engine 2 is rotated in the reverse direction as compared with the conventional case, or a reverse gear is added to the inside of the clutch housing 6 or the transmission box 8 to rotate the cutter 2 to the right. And

As shown in FIG. 2, the cutter 2 is formed of a plate member having a square shape in a plan view, and has first corners 2a having a rectangular shape in a plan view at its four corners and four sides. When the second cut 2b having a triangular shape in plan view is provided in the central portion, and the cutter 2 rotates in the Y direction between these first and second cuts 2a, 2b to exert a cutting action on weeds and the like. Four cutting blades 21 are formed on the front side in the rotation direction of. In addition, a string material 22 is attached to each of the two locations facing each other on the outer peripheral portion of the cutter 2.

Next, the operation of the above configuration will be described. When performing a mowing operation for weeds with a brush cutter, the worker 10 holds the handle 4 and attaches the cutter 2 provided on the tip side of the main rod 1 from the lower left side to the upper right side in FIG. While moving in the direction, weeds and the like are mowed by the cutting blades 21 and the string members 22. At this time, similarly to the case described in the section of [Prior Art], the upper left diagonal portion AA in the figure is the cutting area.

Since the cutter 2 is rotated to the right in the Y direction during the above cutting work, weeds cut in the cutting area AA and stones scrubbed by the string material 22 are not shown in FIG. As indicated by the arrow D, the scatterer scatters in the opposite direction from the worker 10 who is holding the main rod 1 and performing the mowing work from the mowing area. As a result, scattered weeds and stones will not hit the worker, and even if the cutter 2 is cut during the work, the cut portion of the cutter 2 will fly toward the worker 10 side. Since it is not scattered, weeds can be safely harvested.

In the above embodiments, the cutter 2 is shown which is composed of a plate member having a quadrangular shape in plan view, and the cutting blades 21 are provided at the respective corners of the plate member. It is also possible to use cutters of various shapes, such as a circular cutter having a large number of cutting edges.

[0016]

[Effect of device]

 As described above, according to the present invention, the cutter is set to rotate clockwise when viewed from above, so that the weeds can be safely removed without the need for a protective cover. Mowing work can be performed.

[Brief description of drawings]

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

FIG. 2 is an enlarged plan view of a cutter portion.

FIG. 3 is a plan view showing a cutter portion of a conventional brush cutter.

[Explanation of symbols]

 1 ... Main rod, 2 ... Cutter, 3 ... Drive device, 4 ... Handle.

Claims (1)

[Scope of utility model registration request] 1. A cutter is attached to a lower surface of one end of a main rod, a drive device for driving the cutter is attached to the other end, and a handle held by an operator is attached to an intermediate portion of the main rod. A brush cutter set to rotate clockwise when viewed from above.