JPH0443930U

JPH0443930U -

Info

Publication number: JPH0443930U
Application number: JP8653890U
Authority: JP
Priority date: 1990-08-18
Filing date: 1990-08-18
Publication date: 1992-04-14

Description

[Brief explanation of the drawing]

第１〜７図は本考案の実施例の説明図で、第１
図は第２図の−線拡大断面図、第２図は平面
図、第３図は切刃部の正面図、第４図は刃部本体
の一部底面図、第５図は第４図のＶ−Ｖ線断面図
、第６図は切刃部押圧板の一部底面図、第７図は
第６図の−線断面図である。１……刃部、２……駆動軸、３……切刃部、３
ａ……切刃部の係止突起、３ｂ，３ｃ……第１、
第２の係止突起、４……刃部本体、４ｂ……第１
主係止孔、４ｃ……第１副係止孔、４ｄ……挿入
孔、５……切刃部押圧板、５ａ……第２主係止孔
、５ｂ……第２副係止孔、６……締付ビス。 Figures 1 to 7 are explanatory diagrams of embodiments of the present invention.
The figure is an enlarged cross-sectional view taken along the line - 2 in Figure 2, Figure 2 is a plan view, Figure 3 is a front view of the cutting blade, Figure 4 is a partial bottom view of the blade body, and Figure 5 is Figure 4. FIG. 6 is a partial bottom view of the cutting blade pressing plate, and FIG. 7 is a cross-sectional view taken along the line -- in FIG. 6. 1... Blade part, 2... Drive shaft, 3... Cutting blade part, 3
a... Locking protrusion of the cutting edge portion, 3b, 3c... First,
Second locking protrusion, 4...blade main body, 4b...first
Main locking hole, 4c...first sub-locking hole, 4d...insertion hole, 5...cutting blade press plate, 5a...second main locking hole, 5b...second sub-locking hole, 6...Tightening screw.

Claims

[Claims for Utility Model Registration] (1) In the blade structure of a lawn mower equipped with a rotatably driven blade, a plurality of cutting blades made of a fine wire metal material with excellent elasticity are attached to the blade main body. A lawn mower blade structure characterized by being removably attached radially at equal intervals in the circumferential direction. (2) The cutting blade has locking protrusions formed on the rear end side, and the blade main body has first main locking holes formed at equal intervals in the circumferential direction to engage with the locking projections of the cutting blade. , an insertion hole for inserting and supporting the cutting blade is formed on the downwardly bent outer peripheral edge so as to be on the same line in the radial direction as the first main locking hole, and the tip side of the cutting blade is inserted into the insertion hole. The locking protrusion at the rear end of the cutting blade is engaged with the first main locking hole, and the cutting blade pressing plate covering the rear end side of the cutting blade is removably tightened to the blade main body. The blade structure of a lawn mower according to claim 1, characterized in that: (3) The mower blade structure according to claim 2, wherein the locking protrusion of the cutting blade is formed by bending the rear end side of the cutting blade in the vertical direction. (4) The mower blade structure according to claim 3, wherein the locking protrusion of the cutting blade is formed in a U-shape. (5) The blade main body has a first sub-locking hole that engages the locking protrusion of the shortened cutting blade portion, and is formed between the first main locking hole and the insertion hole. 3. Blade structure of the mower described in 3. (6) The cutting blade pressing plate has a second main locking hole formed at a position corresponding to the first main locking hole of the blade main body, into which the locking protrusion of the cutting blade is attached. 5. The blade structure of the mower according to 3, 4 or 5. (7) In the cutting blade press plate, the second sub-locking hole that engages the shortened locking protrusion of the cutting blade is connected to the first hole of the blade main body.
The blade structure of a lawn mower according to claim 6, wherein the blade structure is formed at a position corresponding to the auxiliary locking hole. (8) Claim 2, wherein the outer peripheral edge of the blade main body is bent downward into a U-shape, and the outer peripheral edge of the cutting blade pressing plate is formed in close contact with the edge of the blade main body.
7. The blade structure of a mower according to 3, 4, 5, 6 or 7.