JPH0443928U

JPH0443928U -

Info

Publication number: JPH0443928U
Application number: JP8478990U
Authority: JP
Priority date: 1990-08-10
Filing date: 1990-08-10
Publication date: 1992-04-14
Anticipated expiration: 2005-06-21
Also published as: JPH0726899Y2

Description

[Brief explanation of the drawing]

第１図は乗用芝刈機の側面図、第２図はカツタ
ーデツキの平面図、第３図は同側面図、第４図は
同縦断面図、第５図はカツターデツキの模式的平
面図、第６図は第５図の−線断面図、第７図
はセンターブレードとサイドブレードの側面図、
第８図は第５図の−線断面図、第９図は各寸
法における刈跡の状態を示す図、第１０図はカツ
ターデツキ左部の刈跡を示す図、第１１図はカツ
ターデツキ右部の刈跡を示す図、第１２図は刈芝
の飛散領域を示す図、第１３図は刈跡の状態を示
す図である。２２……カツターデツキ、２３……刈芝放出口
、３５……刈芝放出口、３７……センターブレー
ド、３８，３９……サイドブレード、ｌ５……刈
芝放出通路上面とカツターブレード下端との間隔
、ｌ６……刈芝放出通路上面とカツターデツキ上
面との間隔。 Fig. 1 is a side view of the riding lawn mower, Fig. 2 is a plan view of the cutting deck, Fig. 3 is a side view of the same, Fig. 4 is a longitudinal sectional view of the same, Fig. 5 is a schematic plan view of the cutting deck, and Fig. 6 is a schematic plan view of the cutting deck. The figure is a sectional view taken along the - line in Fig. 5, and Fig. 7 is a side view of the center blade and side blade.
Figure 8 is a cross-sectional view taken along the - line in Figure 5, Figure 9 is a diagram showing the state of mowing marks in each dimension, Figure 10 is a diagram showing mowing marks on the left side of the cutter deck, and Figure 11 is a view on the right side of the cutter deck. FIG. 12 is a diagram showing the scattering area of cut grass, and FIG. 13 is a diagram showing the state of the mowing trace. 22... cutter deck, 23... cut grass discharge port, 35... cut grass discharge port, 37... center blade, 38, 39... side blade, l5... between the upper surface of the cut grass discharge passage and the lower end of the cutter blade Interval, l6... Distance between the upper surface of the cut grass discharge passage and the upper surface of the cutter deck.

Claims

[Claims for Utility Model Registration] (1) A plurality of cutter blades are arranged within a cutter deck, a cut grass discharge outlet is provided on the side of the cutter deck, and a cutter blade is provided on the inner wall of the cutter deck above the front of the rotation locus of the cutter blade. , in a lawn mower having a cut grass discharge passage that communicates with the cut grass discharge port, the distance between the rotation locus of the side blade disposed on the opposite side of the cut grass discharge port and the inner wall of the cutter deck is determined by the rotation of the side blade. The cutter deck structure of a lawn mower is characterized by being gradually enlarged along the direction. (2) The cutter deck structure for a lawn mower according to claim 1, wherein the longitudinal width of the cut grass discharge passage is gradually increased from the upstream side to the downstream side. (3) The distance between the upper surface of the cut grass discharge passage and the lower end of the cutter blade is set between 120 mm and 140 mm, and the upper surface of the cutter deck is set lower than the upper surface of the cut grass discharge passage by 0 mm to 20 mm. The lawn mower cutter deck structure according to claim (1). (4) The above-mentioned claim (1) characterized in that the plurality of cutter blades are composed of a center blade arranged at the center of the cutter deck and side blades arranged on the left and right sides of the center blade.
) to (3), the lawn mower cutter deck structure described in (3). (5) The lawn mower according to claim (4), wherein the center blade is located further forward than the left and right side blades, and the central part of the cut grass discharge passage is formed to protrude forward. Katsutadetsuki structure. (6) Claim (1) characterized in that the distance between the rotation locus of the side blade disposed on the opposite side of the grass clipping outlet and the inner wall of the cutter deck is gradually increased along the rotation direction of the side blade. )
The cutter deck structure of the lawn mower described in . (7) The cutter deck structure for a lawn mower according to claim (4), wherein the rotational speed of the side blade provided near the cut grass outlet is set higher than that of the other side blades and the center blade. (8) The cutter deck structure for a lawn mower according to claim (7), wherein the rotational speeds of the side blades and the center blade, which are arranged on the opposite side of the cut grass discharge port, are approximately equal. (9) The cutter deck structure for a lawn mower according to claim (4), wherein the cutter deck is tilted forward and the center blade is made higher than the side blades. (10) Claim (1) above, characterized in that a discharge adapter is provided at the discharge port of the cutter deck, and the longitudinal width of the discharge adapter is gradually increased from the upstream side to the downstream side.
The cutter deck structure of the lawn mower described in . (11) The cutter deck for a lawn mower according to claim 1, characterized in that a flange for preventing grass clippings from falling, which extends inside the cutter deck, is provided on the lower edge of the side opposite to the outlet of the cutter deck. structure.