KR101032898B1 - Cutting unit for grass cutter - Google Patents

Abstract

Rope of suitable length is used for the weeding operation, but the thick pin is supported by the back of the rope to enable smooth weeding operation. Disclosed is a cutting unit for mowers, which can also be used as a rope type to improve the efficiency of mowing. Cutting device for lawn mower according to the present invention is coupled to the rotor by overlapping the first disc and the second disc, the central portion of the first disc protrudes toward the second disc to form a fastening space portion, two sides on all sides of the fastening space portion A pair of mounting holes are formed in at least two places so that the folded rope is inserted to extend outwardly between the first disc and the second disc. And the guide pin is mounted to the front and back of the rope between the first disk and the second disk, the rear guide pin of the guide pin is formed thicker than the front. In addition, the circular saw blade and the mounting disk is coupled to the lower side of the first disk so that the circular saw blade can be selectively mounted. At this time, the mounting disc is formed with a fastening space portion so that the center portion protrudes toward the first disc side, the exposed groove is formed so that the rope can be entered on the four sides of the fastening space portion.

Description

Cutting unit for grass cutter

The present invention relates to a cutting unit for mowing, and more particularly, to a cutting unit for mowing that can improve the cutting force and extend the life of the cutting rope.

The mower is divided into rope type and blade type according to the type of cutting unit.

First, the rope-type mower is used by the rotational force by letting the ropes come out on one side of each side, the strength is weak, the twigs, etc. can not be cut, but the soft weeds, such as grass, the safety is good, the speed of weeding work is fast.

These rope-type mowers have difficulty in weeding because the ropes are weak when weeding, and when weeding thick weeds such as reticles, tusks, they are not cut or the ropes are wound around the weeds.

In addition, in the case of rope-type lawn mowers, there is also an automatic loosening rope mower, in which the rope is worn and refitted to the hassle and the cutting unit is wound around the length of about 2 m so that the work can be easily released during the continuous operation.

In practice, however, if you use an automatic loosening mower, it is difficult to adjust the loosening length of the rope to a suitable length for the job, and if the loosening is too long, the angle of the rotating rope is bent by the air resistance so that the grass cannot be hit hard. The work did not work well and took a lot of time.

In addition, long ropes were tangled with the grass cut and tangled with the other rope.

If the rope breaks due to the above reasons, the machine has spent a lot of time stopping the machine and dismantling the cutting unit and returning to it.If the rope is long, the slow work continues until it runs away to the proper length. There were a lot.

Next, the blade mower is further divided into a straight blade and a circular saw blade mower.

The straight blade type mower is a long two-blade blade is rotated at high speed, the power is so good that not only weeds but also branches are cut.

However, when the blade-type blade mower as described above has a stone on the floor, the blades are struck by the stone, and the stone is bounced to the outside, which poses a threat to others around the mowing operation.

Circular saw blade mowers are well cut to thick grass and do not bounce stones, which is good for safety, but hassle of having to rethink the felled grass and slow down weeding.

The present invention has been made in order to solve the above problems, using a rope of the appropriate length for weeding work, cutting unit for mowers to enable a smooth weeding work by supporting a thick pin behind the rope To provide.

In addition, the present invention provides a cutting unit for lawn mowers that have good safety and circular saw blades and ropes that are well cut to thick grasses, and the circular saw blades cut grass, and the ropes beat off the grass to improve work efficiency. have.

The present invention to solve the above problems,

In the cutting unit mounted on the rotor of the mower to perform the weeding operation by the rotational force,

Cutting unit,

The first disc and the second disc overlap each other and are coupled to the rotor. The central part of the first disc protrudes toward the second disc to form a fastening space, and a double-folded rope is inserted on all sides of the fastening space to insert the first disc and At least two pairs of mounting holes are formed to face each other so as to extend outwardly between the second disc, and guide pins are mounted between the first disc and the second disc in front of and behind the rope. There is provided a cutting unit for mowers, characterized in that formed thicker than the front.

In addition, a circular saw blade and a mounting disc are coupled to the lower side of the first disc so that the mounting disc can be selectively mounted. The mounting disc has a fastening space formed so that the central portion protrudes toward the first disc. An exposed groove may be formed so that a circular saw blade may be used as a combination.

As described above, the cutting unit for lawn mowers according to the present invention has been retrofitted due to too many problems of the automatic type, and in particular, it is possible to mount each line of a bifurcated rope so as to have two lines, and a thick pin is mounted on the back of the rope. There is an advantage that the rope is not bent to improve the rotational force of the rope.

In addition, the cutting unit for mowers according to the present invention is to be equipped with a circular saw blade to the rope type to combine the advantages of each other to increase the efficiency of the weeding operation.

Hereinafter, a cutting unit for lawn mowers according to a preferred embodiment of the present invention will be described with reference to the accompanying drawings.

1 is an exploded perspective view showing a cutting unit for mowing according to the present invention, Figure 2 is a perspective view of the cutting unit combined with FIG.

1 and 2, the cutting unit 100 for the lawn mower according to the present invention is coupled to the rotor 20 formed at the end of the work table 10 of the lawn mower (not shown) of the rotor 20 The torque is transmitted.

The cutting unit 100 for the lawn mower is composed of two first and second discs 110 and 120 combined.

Here, although shown inverted upside down in the drawings, the first disc 110 is directed toward the ground, the second disc 120 is in close contact with the rotor 20. In addition, the first disc 110 has a fastening space 115 formed with a concave recessed central portion toward the second disc 120, and a fastening bolt 151 fastened to the rotor 20 in the fastening space 115. Is mounted together with the fastening cap 150. Therefore, the fastening bolts 151 are hollowed through the center portions of the first disc 110 and the second disc 120.

When the first disc 110 and the second disc 120 are overlapped with each other by the protrusion of the fastening space 115, only the fastening space 115 and the second disc 120 abuts, the remaining portion Is spaced apart so that the rope 130 enters and exits the space.

The rope 130 is used in a length of about 20 ~ 30cm, a pair of two ropes 130 are bi-folded to be inserted into the wall surface on the side of the fastening space 115 for fixing the rope 130 is a pair of The mounting hole 116 is formed to face each other on one side and the other side.

That is, when the rope 130 is extended to the outside of the disc to be opposed to each other to maintain the horizontal level of the rotational force it will be preferable that the mounting hole 116 is formed on the opposite side facing each other.

In addition, four mounting holes 116 may be formed at intervals of 90 degrees to extend in two or four directions.

As such, the rope 130 extending outwardly between the first disc 110 and the second disc 120 is easily bent and supported by the fastening hole 116, and thus loses strength. A pair of guide pins 140 spaced apart from each other in a space between the first disc 110 and the second disc 120 to support the rope 130.

That is, the first disc 110 and the second disc 120 are welded to and coupled with the protruding surface of the fastening space 115 is in contact with the second disc 120, together with the guide pin 140 The mounting hole 116 is further mounted so that the rope 130 extends between the guide pins 140 so as to support the front and rear directions of the rope 130.

At this time, the guide pin 140 on the side opposite to the rotation direction of the disc was formed to be thicker than the front so as to support the rope 130 more robustly.

Figure 3 is a perspective view showing an embodiment in which a circular saw blade is further mounted to a cutting unit for mowers formed as described above.

Referring to FIG. 3, the cutting unit 100 for the lawn mower according to the present invention may be further equipped with a circular saw blade 160 under the first disc 110.

That is, in order to further mount the circular saw blade 160, after separating the fastening bolt 151 and the fastening cap 150 used in the first disc 110, the circular saw blade 160 to the first disc 110 After the buttocks, the mounting disc 170 is padded on the bottom of the circular saw blade 160 to be coupled by the fastening cap 150 and the fastening bolt 151.

At this time, the mounting disk 170 is formed with a fastening space 175 as with the first disk 110, the mounting hole 116 of the first disk 110 on the inner wall surface of the fastening space 175. Exposed groove 176 is formed so that is seen from the outside.

Therefore, even after the circular saw blade 160 is mounted, it is possible to replace by the exposed groove 176 even without removing the circular saw blade 160 to replace the rope 130.

In addition, the mounting disc 170 is bolted to the first disc 110 so that it can be selectively mounted or detached.

Hereinafter will be described briefly how to use the cutting unit 100 for the mower formed as described above.

First, in the case of the weeding work with a lot of soft grass is efficient to work only by the rope 130, the circular saw blade 160 to separate and use, in the case of a lot of thick grass rope 130 and circular saw blade (160) ) Can be used in combination to increase the efficiency of weeding.

First, the mounting of the rope 130 is to cut the rope 130 to about 20 ~ 30cm, fold the rope 130 in half so that both ends are inserted to go out from the inside of the mounting hole 116, the rope 130 Both ends of the to ensure that it extends between the guide pins (140).

As such, when the rope 130 is installed, centrifugal force is generated by the rotational force of the cutting unit 100 even without tying the rope 130, so that the rope 130 may be used without being separated. In addition, a thick pin is mounted on the opposite side of the rope 130 in the rotational direction to strongly support the cutting force due to the rotation of the rope 130.

Next, the weeds of the thick weeds are used by mounting the circular saw blade 160 together, when the circular saw blade 160 and the rope 130 is mounted together, two advantages are achieved at the same time. That is, the grass cutting force is good, but the circular saw blade 160 that does not hit the grass (does not fall quickly) serves to cut the grass, the rope 130 is to knock down the cut grass instantaneously quickly.

Although described above with reference to a preferred embodiment of the present invention, those skilled in the art can be variously modified and changed within the scope of the invention without departing from the spirit and scope of the invention described in the claims You will understand.

1 is an exploded perspective view showing a cutting unit for mowing according to the present invention,

Figure 2 is a combined perspective view showing a cutting unit for mowing according to the present invention, and

3 is a perspective view showing a state that the circular saw blade is further mounted to the cutting unit of FIG.

Claims (2)

In the cutting unit mounted on the rotor 20 of the mower to perform the weeding operation by the rotational force, The cutting unit 100, The first disc 110 and the second disc 120 overlap and are coupled to the rotor 20, and a central portion of the first disc 110 protrudes toward the second disc 120 to fasten the space 115. ) Is formed, and a pair of mounting holes are inserted in two directions on the four sides of the fastening space 115 to extend outwardly between the first disc 110 and the second disc 120. 116 are formed in at least two places so as to face each other, the guide pin 140 is mounted to the front and rear of the rope 130 between the first disc 110 and the second disc 120, the guide The rear guide pin 140 of the pin 140 is a cutting unit for mowers, characterized in that formed thicker than the front. According to claim 1, wherein the circular saw blade 160 and the mounting disk 170 is coupled to the bottom of the first disk 110 to be selectively mounted, the mounting disk 170 has a central portion of the first disk The fastening space portion 175 is formed to protrude toward the side 110, and on the four sides of the fastening space portion 175 for the lawn mower, characterized in that the exposed groove 176 is formed so that the rope 130 can enter and exit Cutting unit.

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