JPH0631422U - Blade for mower - Google Patents

Abstract

(57) [Abstract] [Purpose] A blade for a power type mower, which is intended to prevent grass from being wrapped around the attachment portion of the blade. [Structure] A blade for a brush cutter, which has a rising blade projecting above the upper surface of a plate material forming the blade, at a position that is inserted from the outer peripheral portion of the blade for a blade brush.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to improvements in blades used in powered mowers.

[0002]

[Prior art]

 As shown in FIG. 1, a power-type brush cutter that is generally used in the past transmits the rotational output of the power generator 8 to a flange portion 9 at the tip end via a shaft arranged inside a rod body 12. Generally, the blade 10 is attached to the flange portion 9 by screwing, and the blade 10 used for this is made of a disc-shaped metal plate. It is usual that a large number of blade portions 13 are formed on the outer peripheral portion.

[0003]

[Problems to be solved by the device]

 When cutting grass with such a brush cutter, the grass cut by the blade is usually blown away by the rotating force of the blade, but if the blade is not well cut or is too thin, When cutting weak grass or dead grass, the uncut grass is caught inside by the rotation of the blade, and the grass 11 is deeply inserted between the rotating part and the non-rotating part as shown in Fig. 1. It becomes. When this happens, the rotary blade is shaped like a brake to reduce the blade's rotational force, and this reduced rotational force further increases the amount of grass wrapping, and finally In the end, the rotation of the blade is stopped, and the worker has to interrupt the mowing work and remove the wrapped grass. If such a thing happens frequently, the worker must remove the wound grass each time, and the work efficiency is significantly impaired. The present invention seeks to prevent this whirlwind phenomenon that occurs during work by improving the blade used in the brush cutter.

[0004]

Means for Solving the Problem This invention forms a rising blade projecting upward from the upper surface of the blade plate at a position inside the outer peripheral portion of the blade plate, and by the rising blade, a rotating portion is formed. It is intended to preliminarily cut the grass that tries to get between the non-rotating part and the non-rotating part.

[0005]

【Example】

 One embodiment of the present invention will be described with reference to the drawings. A blade body 1 for a brush cutter has a saw blade-shaped outer peripheral portion of a disk-shaped plate member 7 having a hole 5 in a central portion as shown in FIG. A large number of blades 3 ... Are arranged by forming a cut portion, and a carbide tip 6 is planted at the tip of the blades. The leading edge 2 is formed at the position where the leading edge protrudes above the upper surface of the plate material at the position of entering the center side. That is, a tongue piece having a shape in which the front side is continuous is formed by punching out both sides and the outer side at a position that is inserted from the outer periphery of the disk-shaped plate material 7 having the blade portion 3 on the outer periphery. The rising blade 2 is formed by pulling up the tongue piece toward the front side and bending it so that the whole of the tongue piece protrudes from the upper surface of the plate material 7. The bladed portion 4 is formed on the side portion on the direction side. In the above-mentioned embodiment, when the rising blade 2 is formed, the disk-shaped plate material 7 is formed by cutting the three sides by pressing and bending the vicinity of the continuous portion on the front side. As another embodiment of the present invention, another member for forming the rising blade 2 may be attached to the upper surface of the plate member 7 by means such as spot welding. In addition, the above-mentioned embodiment is related to a structure in which a cemented carbide tip is planted, but a rising blade is used as a blade for a brush cutter such as a 4-flute or 8-flute that has been generally used in the past. It is also possible to adopt a configuration in which 2 is formed.

[0006]

[Effect of device]

 The blade body 1 for the brush cutter according to the present invention is configured as described above, and can effectively prevent grass from being wrapped around the blade attachment portion during mowing work by the brush cutter. The advantage is that it can. In other words, the phenomenon of grass wrapping around the blade attachment part during mowing work is that when a part of the grass cut while remaining long remains on the upper surface of the blade for a short time and its base contacts the blade attachment part. At the same time, the tip of the blade is rotated at a high speed by the rotation of the blade, but in the blade according to the present invention, the rising blade 2 has a shape protruding above the upper surface of the plate material constituting the blade. As a result of the structure in which the blades are formed, some of the grass remaining on the upper surface of the blade is finely cut by the rising blade 2, and some is shaken off by the rising blade 2 and attached to the mounting portion. This has the advantage that all the treatments can be done before the wraparound phenomenon occurs, and the phenomenon of grass wrapping around the blade attachment part during work can be effectively prevented.

[Brief description of drawings]

FIG. 1 is a perspective view showing a grass wrapping phenomenon in a brush cutter.

FIG. 2 is a perspective view showing the entire blade body for the brush cutter according to the present invention.

[Explanation of symbols]

 1 Blade body for mower 2 Standing blade 3 Blade portion 7 Plate material

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Taitsune Fujimoto, 1559, Joya, Ono City, Hyogo Prefecture 1 (72) Inventor, Noriaki Matsumoto 128, Asahioka, Bessho Town, Miki City, Hyogo Prefecture

Claims (1)

[Scope of utility model registration request] 1. A plurality of blades 3 are provided on an outer peripheral portion of a disk-shaped plate member 7.
... and a rising blade 2 protruding upward from the plate surface of the plate member 7 is formed at a position that enters the center of the blade portion 3 and a blade for a brush cutter.