JPH0166816U

JPH0166816U -

Info

Publication number: JPH0166816U
Application number: JP1987161870U
Authority: JP
Priority date: 1987-10-21
Filing date: 1987-10-21
Publication date: 1989-04-28

Description

[Brief explanation of the drawing]

第１図は本考案の草刈刃の一実施例を示す背面
図、第２図は第１図の―′線で切断した断面
図、第３図は第１図の―′線で切断した断面
図、第４図は本考案の草刈刃に使用する刃の一実
施例を示す平面図、第５図は本考案の草刈刃に使
用する治具使用の一実施例を示す斜視図、第６図
は本考案の草刈刃下部の一実施例を示す斜視図で
ある。図中：１……回転円板式草刈刃、２……回転円
板、３……刈刃、４……刃脱落防止カバー、５…
…凹状、６……ボルト、７……鍔状、８ａ，８ｂ
，８ｃ……軸穴、９……刃先、１０……軸、１３
……治具、Ｂ……下面、Ｏ……外方。 Fig. 1 is a rear view showing an embodiment of the mowing blade of the present invention, Fig. 2 is a cross-sectional view taken along the line -' in Fig. 1, and Fig. 3 is a cross-sectional view taken along the line -' in Fig. 1. 4 is a plan view showing one embodiment of the blade used in the mowing blade of the present invention, FIG. 5 is a perspective view showing an embodiment of the jig used in the mowing blade of the present invention, and FIG. The figure is a perspective view showing an embodiment of the lower part of the mowing blade of the present invention. In the diagram: 1...Rotating disc type grass cutting blade, 2...Rotating disc, 3...Mowing blade, 4...Blade fall prevention cover, 5...
...concave, 6...bolt, 7...flange, 8a, 8b
, 8c... Shaft hole, 9... Cutting edge, 10... Shaft, 13
...Jig, B...Bottom surface, O...Outside.

Claims

[Scope of Claim for Utility Model Registration] 1. A rotary disc-type grass cutting blade, in which several cutting blades are pivotally attached to the outer periphery of the rotating disc and covered with a cover to prevent the blades from falling off. It consists of a triangular shape with a shaft hole and cutting edges on three sides, and one of the shaft holes of each cutting blade is pivotally attached to several shafts installed on the outer periphery of the rotating disk, and the rotating disk is A mowing blade characterized in that when rotated, centrifugal force causes the cutting edge corresponding to the shaft hole to be positioned outward in the direction of rotation, and the cutting edge can be used alternately. 2. Scope of Utility Model Registration Claim 1, characterized in that the lower surface of the blade fall prevention cover is partially concave, and a mounting bolt for the rotating disc is screwed into the concave position to prevent the cutting blade from falling off. Grass cutting blade as described in section. 3. Claim 1 of the utility model registration claim, characterized in that the end of the blade fall prevention cover is bent inward to form a brim shape to prevent grass clippings from being caught between the cover and the rotating disc. or the grass cutting blade described in item 2. 4. Utility model registration claim 1, characterized in that the shaft hole corresponding to the cutting edge is drilled downward from the center of the triangle toward the front in the rotational direction so that the cutting edge can be positioned at a desired position. Grass cutting blade as described in section. 5. The mowing blade according to claim 1 or 2, which is characterized in that the blade fall prevention cover is provided with a jig so that the blade edge can be replaced without removing the mounting bolt.