JP2553221Y2 - 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 clipper-type brush cutter having a pair of cutting blades which reciprocate relatively in a longitudinal direction.

[0002]

2. Description of the Related Art Conventionally, a brush cutter having a pair of cutting blades which reciprocate relatively in the longitudinal direction, that is, a clipper-type cutting blade, is easy to hit the longitudinal end of the cutting blade to a hard fixed structure or the like. Therefore, the cutting blade may be damaged, and for example, it is difficult to cleanly and safely cut grass or the like that protrudes to the edge of the road.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to eliminate the above-mentioned disadvantages of the prior art and to provide a simple and convenient brush cutter.

[0004]

According to the present invention, a brush cutter having a pair of cutting blades relatively reciprocating in a longitudinal direction according to the present invention includes a pickup device for scooping grass and the like toward the cutting blade. It is characterized in that it is attached to the side surface of the front end of the holding plate so as to be rotatable up and down .

[0005]

Therefore, the pick-up device not only protects the tip of the cutting blade during the cutting operation of grass and the like, but also scoops and guides the grass and the like toward the cutting blade, so that the cutting device lies on the ground and cuts. Even those that are difficult can be reaped neatly.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described with reference to the drawings. FIG. 1 is a side view of a cutting blade device portion of a brush cutter to which the present invention can be applied, FIG. 2 is a schematic side view of a main part of a first embodiment of the present invention, and FIG. FIG. 4 is a schematic side view of a main part of the third embodiment of the present invention, FIG. 4 is a sectional view taken along the line IV-IV of FIG. 3, and FIG. First,
As shown in FIG. 1, a pair of elongated cutting blades 2 and 3 are provided on a head portion 1 connected to an operating rod (not shown) of the bush cutter via a holding plate 26 so as to overlap with each other. The blades 2 and 3 are mounted so as to be able to reciprocate in the longitudinal direction in opposite phases to each other to constitute a reciprocating cutting blade, and convert the rotational driving force of an internal combustion engine or the like into a reciprocating driving force as in a normal brush cutter. It is driven via the power conversion mechanism 4. A pickup device to be described later is additionally provided on the side surface 5 of the distal end portion of the holding plate 26. There is no problem even if one movable blade is omitted by using the holding plate 26 as a fixed blade.

In the first embodiment shown in FIG. 2, the pickup device 6 is mounted on the tip side surface 5 of the holding plate 26 in FIG. The pickup device 6 is made of a rigid plate material such as a steel plate.
Is attached by a headed pin 8 planted on the side surface 5 of the distal end of the head. Therefore, the pickup device 6 can rotate up and down in the direction of arrow A and slightly slide back and forth in the direction of arrow B. The pickup device 6 includes a front portion 10 protruding forward from the sawtooth portion 9 of the cutting blades 2 and 3, and a rear portion protruding rearward from the back portion 11 of the cutting blades 2 and 3 opposite to the sawtooth portion 9. 12 are integrally formed, and the front part 10 has a flat lower edge 13.
And an upper edge 15 that slopes forward and defines a pointed tip 14 with the lower edge 13. The rear part 12
Has a bent portion 16 which is bent in a direction surrounding the back portion 11 at a portion slightly separated rearward from the back portion 11 of the cutting blades 2 and 3. The bent portion 16 restricts the rotation range of the pickup device 6 in the direction of the arrow A by engaging the upper end or the lower end with the back 11 of the cutting blades 2 and 3. Further, the weight of the front part 10 is smaller than the weight of the rear part 12 so that the tip end 14 of the pickup device 6 is kept in a state of rotating outward or above the ground with respect to the tip end of the holding plate 26. Have a heavy weight balance or
Alternatively, the above state is maintained by a biasing spring (not shown) acting between the pickup device 6 and the holding plate 26.

During the cutting operation, the pick-up device 6 moves the cutting blade 2
And 3, while scooping grass and the like toward the cutting blades 2 and 3 along the upper edge 15 of the front portion 10 thereof, thereby enabling the grass to be cut cleanly and safely. To Even when mowing grass or the like protruding from the edge of the road, the mowing can be performed while the cutting blades 2 and 3 are directed in the vertical direction and the tip pickup device 6 is applied to the edge of the road.
There is no uncut grass. In addition, since the pickup device 6 can move up and down and back and forth during the work, the tips of the cutting blades 2 and 3 can be smoothly guided along the ground, and a safe and comfortable work can be performed.

Next, in the second embodiment shown in FIGS. 3 and 4, the rear portion 18 of the pickup device 17 is
9 has a rear end portion 20 bent stepwise further rearward,
A wheel 21 is pivotally supported by the rear end portion 20 substantially in line with the cutting blades 2 and 3. The wheels 21 are grounded to the ground G during the mowing work, so that the mowing work is facilitated, and at the same time, the tip 22 of the pickup device 17 is naturally in contact with the ground, so that the grass can be completely scooped and clean mowing can be performed. To Therefore, in this embodiment, it is not necessary to consider the weight balance before and after the pickup device 17 or to provide a biasing spring for the pickup device 17.

Next, a third embodiment shown in FIG. 5 is similar to the tip 22 of the pickup device 17 of the second embodiment described above.
In addition, this is an example in which an auxiliary pickup device 24 is mounted so as to be rotatable up and down around a pin 23 in the direction of arrow C.
Gets a higher pickup effect and enables stable work.

[0011]

As described above, according to the invention], in the present invention, the pitch
Scoop up grass etc. toward the cutting blade by turning up and down
Guide the cutting blade to perform the mowing operation reliably.
At the same time, it is possible to protect the cutting blade because the tip of the cutting blade does not directly hit a hard fixed structure or the like, and to clean and safely cut grass, for example, even overhanging a road edge. There are effects such as being able to do.

[Brief description of the drawings]

FIG. 1 is a side view of a cutting blade device portion of a brush cutter to which the present invention can be applied.

FIG. 2 is a schematic side view of a main part of the first embodiment of the present invention.

FIG. 3 is a schematic side view of a main part of a second embodiment of the present invention.

FIG. 4 is a view taken in the direction of arrows IV-IV in FIG. 3;

FIG. 5 is a schematic side view of a main part of a third embodiment of the present invention.

[Explanation of symbols]

 2,3 Cutting blade 5 Side surface of tip of holding plate 6,17,27 Pickup device 26 Holding plate

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 55-77914 (JP, U) Japanese Utility Model Sho 60-136627 (JP, U) Japanese Utility Model Hei 1-1112649 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. A brush cutter having a pair of cutting blades (2, 3) relatively reciprocating in a longitudinal direction, a pickup device (6) for scooping grass and the like toward the cutting blades (2, 3). 1
7. A bush cutter characterized in that the cutter blade (7, 27) is attached to the side surface (5) of the tip of the holding plate (26) of the cutting blade so as to be rotatable up and down .