JPH035333U

JPH035333U -

Info

Publication number: JPH035333U
Application number: JP6432089U
Authority: JP
Priority date: 1989-05-31
Filing date: 1989-05-31
Publication date: 1991-01-18
Anticipated expiration: 2004-05-31
Also published as: JPH0621302Y2

Description

[Brief explanation of drawings]

添付図面はこの考案の実施例を示し、第１図は
要部の側断面図、第２図は締着台の断面図、第３
図は締着台の平面図、第４図は他の実施例による
要部の側断面図、第５図は第４図の−線に沿
う断面図、第６図は締着台の他の実施例による平
面図、第７図は第６図−線に沿う断面図、第
８図はさらに別の実施例による締着台の平面図、
第９図は第８図−線に沿う断面図である。１……ギヤケース、２……出力軸、２Ａ……大
径部、２Ｂ……小径部、３……刈刃抑え、３Ａ…
…フランジ部、３Ｂ……段部、３Ｃ……ボス部、
４……締着台、４Ａ……雌ねじ孔、４１……下面
、４２……ボス部、４３……テーパ面、４４……
移動子収容空間、４５……リム、４５Ａ……凹凸
、５……板ばね、６，８……遠心ガバナ、６１，
８１……支軸、６２……係止爪、８２……フツク
、駆動カム、６３，８３……ガバナアーム、８４
……重錘、７……ボール。 The attached drawings show an embodiment of this invention, in which Figure 1 is a side sectional view of the main part, Figure 2 is a sectional view of the fastening base, and Figure 3 is a sectional view of the fastening base.
The figure is a plan view of the fastening base, FIG. 4 is a side sectional view of main parts according to another embodiment, FIG. 5 is a sectional view taken along the - line in FIG. FIG. 7 is a sectional view taken along the line of FIG. 6; FIG. 8 is a plan view of a fastening base according to another embodiment;
FIG. 9 is a sectional view taken along the line of FIG. 8. 1...Gear case, 2...Output shaft, 2A...Large diameter section, 2B...Small diameter section, 3...Mower blade retainer, 3A...
...Flange part, 3B...Step part, 3C...Boss part,
4...Tightening base, 4A...Female screw hole, 41...Bottom surface, 42...Boss portion, 43...Tapered surface, 44...
Mover housing space, 45... rim, 45A... unevenness, 5... plate spring, 6, 8... centrifugal governor, 61,
81... Support shaft, 62... Locking claw, 82... Hook, drive cam, 63, 83... Governor arm, 84
... Weight, 7 ... Ball.

Claims

[Scope of utility model registration request]

The main operating rod has an engine at one end, a gear case at the other end, and a cutting blade holder attached to the output shaft of this gear case. In the mower blade mounting device for a brush cutter, the clamping base includes a mounting portion that is threadedly engaged with the output shaft, and a mounting space that is accommodated in a storage space that is formed inside. A movable element that moves by force, a friction plate that presses the cutting blade against the cutting blade retainer by the movement of the moving element,
The friction plate includes a centrifugal governor attached to a tightening base, and a locking portion that locks to a drive-side member such as the output shaft due to centrifugal force generated in the centrifugal governor. The inner peripheral edge is fixed to the mounting base, and when the rotation speed exceeds a predetermined number between the cutting blade and the cutting blade, the mowing blade is fixed by friction, and the locking portion is connected to the clamping base by the movement of the centrifugal governor. A mowing blade attachment device for a brush cutter, characterized in that the mowing blade attachment device for a brush cutter is configured to prevent the attachment base from falling off by locking the attachment base with a member on the driving side.