JPH0619419U - Rotary blade for brush cutter - Google Patents

Abstract

(57) [Summary] [Purpose] The rotary blade may come into contact with obstacles such as stones and metal fragments on the ground during mower work, causing defects, or scattering them to cause physical danger. The object is to provide a rotary blade that prevents. [Structure] A convex portion having a height such that a blade portion of an outer peripheral portion of the disc body does not come into contact with the ground is provided on a bottom portion of the rotating disc body. [Effect] Since the blade portion does not come into contact with obstacles such as stones and metal pieces on the ground when rotating, it is possible to always mow the grass safely and safely.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a rotary blade for a brush cutter.

[0002]

[Prior art]

 The existing rotary blades for brush cutters often come into contact with obstacles such as stones and metal fragments on the ground during mowing work, and these obstacles scatter and pose a danger to the body. The blade was chipped or the tip was detached.

[0003]

[Problems to be solved by the device]

 Therefore, an object of the present invention is to provide a rotary blade for a brush cutter that eliminates such dangers and fears and can always and safely perform grass cutting work.

[0004]

[Means for Solving the Problems]

 According to the present invention, a convex portion having a height such that the blade portion provided on the outer peripheral portion of the disc body does not come into contact with the ground is provided on the bottom face portion of the rotary disc body.

[0005]

[Action]

 When cutting the grass by rotating the rotary plate attached to the brush cutter, only the convex surface of the bottom of the plate touches the ground, and the edge of the blade floating above the ground grows above the ground. I will reap the grass. Therefore, the blade is used exclusively for mowing without contact with the ground.

[0006]

【Example】

 Reference numeral 1 is a rotary disc body, and a large number of blade portions 2 ... Reference numeral 3 is a shaft mounting portion at the center of the rotary disc body 1.

Reference numeral 4 denotes a convex portion (FIG. 2) fixed to the bottom surface of the rotary disc body 1 in a donut shape, and 5 is fixed to the bottom surface portion so that the periphery of the shaft mounting portion 3 of the rotary disc body 1 is the highest. The convex portions (FIG. 3) and the convex portions 6 (FIG. 4) formed on the bottom surface of the rotary disc body 1 are formed in a donut shape.

The configuration of the convex portion is arbitrary, and the point is to form a convex portion, which is in direct contact with the ground, on the bottom surface of the rotary disc body with an appropriate height.

[0009]

[Effect of device]

 The rotating platen is not located at the position where the edge part of the outer peripheral edge and the bottom part are aligned, the bottom part of the platen is in contact with the ground, and the blade part raised from the ground is in contact with the grass. There are separate roles.

As a result, when the blade portion rotates, it becomes possible to exclusively perform mowing work without contacting obstacles such as stones and metal pieces on the ground, and a loss accident occurs in the blade portion. There is no danger of obstacles scattering over the body, and you can always work safely and safely.

[Brief description of drawings]

FIG. 1 is an overall front view

FIG. 2 is a front sectional view taken along the line AA of FIG.

FIG. 3 is a front sectional view taken along line AA of another example.

FIG. 4 is a front sectional view taken along line AA of FIG.

[Figure 5] Work status diagram

[Explanation of symbols]

 1 rotating plate 2 blades 4, 5, 6 convex

Claims (1)

[Scope of utility model registration request] 1. A rotary blade for a brush cutter, wherein a bottom surface of the rotary disc body is provided with a convex portion having a height such that a blade portion provided on an outer peripheral portion of the disc body does not come into contact with the ground.