JP2533700Y2 - Rotary blade for brush cutter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary blade for a brush cutter.

[0002]

2. Description of the Related Art A conventional brush cutter has a configuration as shown in FIG. 8, so that grass cut during the mowing operation is caught between a turntable and a safety cover. As a result, the rotating body was braked and decelerated or the engine stopped, so that the mowing operation had to be interrupted frequently to remove the stuck grass.

[0003]

An invention To solve the above problems, the present invention is intended to provide a more economical rotary blade with breaks for good for the purpose of removing the drawbacks of the conventional machine .

[0004]

This invention SUMMARY OF THE INVENTION may, on both sides of the HazamaAmane surface in the rotary plate having a blade portion to the outer peripheral edge, the upper and lower oblique side
Between appropriate number appropriate it as a pair of cutting edge portions cut and raised in direction
It is provided at a distance.

[0005] The present invention also provides a blade portion on the outer peripheral edge of the rotating disk body.
Protruding in the cross direction and the rotation direction of the outer blade
The cutting blades are provided on both front and rear ends in opposite directions.
On both sides of the intermediate peripheral surface portions of the rotary plate made, up and down diagonally alternately
A suitable number of cutting blades cut and raised in the direction
They are provided at intervals.

[0006]

[Function] If a part of the grass that has been mowed during the mowing operation is caught between the turntable and the safety cover, the turntable will be braked, but will be caught in the turntable. collision by the difference in peripheral speed of the grass, the HazamaAmane surface in the rotary plate
Setting the cutting edge, entrained grass and directly cutting the grass was <br/> is cut is to be blown from the rotary plate farther by centrifugal force.

[0007] Further , a cut on one surface side of the intermediate peripheral surface portion of the rotating disk body.
If the blade is worn or chipped, turn the turntable over.
Replace and use the other side cutting blade.

[0008]

EXAMPLES 1 in rotary plate, the outer peripheral edge of the board body, following
The blade portions 2 and 11 having the following configuration are provided. 3 is this rotating disk 1
It is a safety cover that is attached to the upper part with a small clearance 4 from the top.

[0009] The first example (see FIGS. 1 and 2) HazamaAmane surface in the central mounting hole 5 and the outer peripheral edge portion 2 of the rotary plate 1
The cutting edges 6, 6 'cut and raised in the vertical and diagonal directions
The Ru provided at the appropriate number appropriate intervals as a pair.

[0010] Intermediate circumferential wherein the cutting edge 6, 6 'of the rotary plate 1
Also be projected on both sides of the face, the cutting edge to be used In practice
Since only the cutting edge faces the safety cover 3, the cutting edge on one side
When 6 is worn, that use to replace the opposite cutting edge 6 'times <br/> rolling machine body in the back-back.

A second example (Fig. 3 through see Fig. 7) edge portion 11 of the outer peripheral edge of the rotary plate 1 are those projecting from the cross direction, front and back in the direction of rotation of the blade portion 11 both cutting edge 12, 13 of <br/> end constitutes the vertical opposition direction.

Center mounting hole 5 of rotary body 1 and outer peripheral edge 11
On both sides of HazamaAmane surface in between, cutting and raising up and down diagonally Direction to each other
The cutting edge portion 9, 10 appropriate number this by a pair of suitable equivalent interval
Has it been provided.

[0013] Even in the example of this, since the cutting edge <br/> used in actual is a cutting edge facing the safety cover 3, when one cutting edge 9 is worn, the opposite changeover used in the Shi upside down the rotary plate 1 so as to replace the blade section 10. Therefore, the cutting blades 12, 13 of the outer peripheral blade portion 11 of the rotating disk 1 are also replaced at the same time .

[0014]

This invention, according to the invention] The grass caught while working reaper by brush cutter is even if Hasamaro between the rotating disk body and the safety cover is on the HazamaAmane surface portion in the rotary plate cutting edge Thus since it is intended to be to remove reliably cut,
Reaper eliminates occur work and off during deceleration braked in rotation of the rotary plate may like to interrupted during work, Ri always name so that it can be safe to and reliably working, in addition, both sides of HazamaAmane surface in the rotary plate
Because those cutting edges are provided on the parts, it is used
Exchange when the cutting edge of one side is worn, turn over the turntable body
A to shall use and conversion, it is possible to provide a highly economical rotary blade.

[Brief description of the drawings]

FIG. 1 is a front view of a first example .

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

FIG. 3 is a front view of a second example .

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a sectional view taken along line XX of FIG. 3;

FIG. 6 is a sectional view taken along line YY of FIG. 3;

FIG. 7 is a sectional view taken along line ZZ in FIG. 3;

FIG. 8 is a side view of the main part of the bush cutter in use.

[Explanation of symbols]

1 Rotating disk body 6, 6 ' Cutting and raising cutting edge 9 , 10 Cutting and raising cutting edge

Claims (2)

(57) [Scope of request for utility model registration] 1. A on both sides of the HazamaAmane <br/> surface in the rotary plate having a blade portion to the outer peripheral edge, the cutting edge portion cut and raised in a vertical oblique direction one-
Cutting payment <br/> machine rotary blade Ru formed is provided at an appropriate number appropriate intervals as a pair. Wherein once provided a cutting portion at the outer peripheral edge of the rolling machine body <br/> cutting edge in the vertical direction opposite to the front and rear end portions of the rotational direction of the peripheral cutting edge portion as well as projecting in a cross direction, thus on both sides of the <br/> in HazamaAmane surface of the rotary plate consisting, cutting and raising alternate vertically diagonal direction
With a suitable number of cutting blades
Only adult Ru brushcutter rotary blade Te.