KR20200000537U - Lawn trimmer safety joint blade - Google Patents

Abstract

The mower safety joint blade according to the present disclosure has a rotating plate having a circular center connected to the rotating shaft to be rotatably driven, a bracket formed integrally with the rotating plate in a state nested on the outer side of the rotating plate, and an outer side of the bracket. It includes a plurality of cutter blades are coupled to the plurality of axes at equal intervals, the plurality of cutter blades is characterized in that a plurality of grooves of a predetermined depth is formed on one side.

Description

LAWN TRIMMER SAFETY JOINT BLADE}

The present disclosure relates to a mowing blade (Blade), and more particularly to a mowing safety articulated blade in which a plurality of articulated cutter blades articulated on the outside of the rotating wheel is coupled at regular equal intervals.

In general, a mower is a device for cutting weeds or lumber by rotating the mowing blades at high speed by the rotational force of a power device such as a motor or an engine, and a linear articulated cutter blade having a linear or linear shape and being articulated Mowers are combined with three to four at equal intervals of about 90 or 120 degrees on the outer side of the circular wheel holder of the recently used widely.

In particular, straight articulated mowing blades are made of steel wire, and 3-4 pieces are formed in the form of joints at 90 or 120 degree intervals around the circular wheel that rotates at high speed. In the process of carrying out the work, there is a possibility of scattering debris when contacting stones and metals, which has a great advantage in securing safety, and shows considerable cutting power in cutting grass, grass, and weeds, and thus has a great preference in the field of recent mowing. Have

However, the straight articulated mowing blades are not only complicated in structure of hooking mechanism for joining mowing blades to the case, but also inconvenient to join the mowing blades. Of course, unlike the intention of the user in the process of use, the articulated mowing blades are often released or dropped arbitrarily, which also poses a problem of threatening the safety of the worker.

Korean Patent Application No. 10-2011-0060463

The lawn mower safety joint blade according to an embodiment of the present disclosure solves various problems occurring in the blade of the conventional lawn mower, when the blade of the lawn mower hits or caught foreign matter while protecting the blade and the operator safely while operating the blade The purpose is to provide a device that can keep the smooth.

In addition, unlike the conventional cutting blades, the purpose is to provide a device for maximizing the cutting force, such as wood or grass by forming a plurality of grooves of a predetermined depth on the side of the blade.

      The mower safety joint blade according to an embodiment of the present disclosure is a rotating plate having a circular center connected to the rotating shaft and rotatably driven, and a bracket and the bracket formed integrally coupled with the rotating plate in a state nested outside the rotating plate. It includes a plurality of cutter blades coupled to the outer side of the plurality of shafts at equal intervals, the plurality of cutter blades is characterized in that a plurality of grooves of a predetermined depth is formed on one side.

      According to a preferred feature of the present disclosure, the bracket is composed of an upper portion and a lower portion, characterized in that formed inside the empty space.

      According to a preferred feature of the present disclosure, the rotating plate and the bracket are formed integrally coupled via a plurality of upper and lower connecting shafts, the bracket is coupled to the plurality of cutter blades through a plurality of blade connecting shafts to the plurality of It characterized in that the cutter blade is rotatably driven.

      According to a preferred feature of the present disclosure, a portion of the plurality of cutter blades is accommodated in an empty space between the bracket and the lower portion.

According to an embodiment of the present disclosure, when the rotating plate rotates together with the bracket for fixing the plurality of cutter blades, the plurality of cutter blades rotatably installed in the forward and backward directions on the blade connecting shaft are radially developed by the centrifugal force. When mowing can be performed smoothly, and other foreign objects such as stones collide with the rotating cutter blade, the cutter blade is caught by the upper and lower connecting shafts as it enters the receiving space formed between the upper and lower brackets. The angle drawn into the inside of the jersey can be prevented at a certain angle, and after removing the foreign matter, it can be unfolded again by the centrifugal force of the rotating plate to secure continuous mowing work.

In addition, by forming a plurality of grooves on the side of the cutter blade, the cutting force is excellent compared to the conventional mowing blade is formed in the upper, lower symmetry, can be used upside down once again.

The effects of the present disclosure are not limited to the above-mentioned effects, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is an overall perspective view of a mower safety articulated blade according to the present disclosure
Figure 2 is an exploded perspective view and a plan view of the bracket and the cutter blade engaging portion forming the lawn mower safety joint blade according to the present disclosure
3 is a plan view of a rotating plate forming a mower safety articulated blade according to the present disclosure

Embodiments of the present disclosure are illustrated for the purpose of describing the technical spirit of the present disclosure, and the scope of rights according to the present disclosure is limited to the embodiments disclosed below or the detailed description of these embodiments. no.

All technical and scientific terms used in the present disclosure, unless defined otherwise, have the meanings that are commonly understood by one of ordinary skill in the art to which this disclosure belongs. All terms used in the present disclosure are selected for the purpose of more clearly describing the present disclosure, and are not selected to limit the scope of the rights according to the present disclosure.

As used in this disclosure, expressions such as "comprising", "consisting of", "formed", "having", and the like, shall include other embodiments unless otherwise stated in the phrase or sentence in which the expression is included. It should be understood as open-ended terms that imply the possibility.

Hereinafter, with reference to the accompanying drawings, looks at the configuration, operation, and effects of the mowing safety blade according to a preferred embodiment of the present disclosure. In the accompanying drawings, the same or corresponding components may be omitted or schematically illustrated for convenience. However, even if the description of the component is omitted, it is not intended that such component is not included in any embodiment.

1 is a view showing an overall perspective view of the lawn mower safety joint blade according to the present disclosure, Figure 2 is an exploded perspective view and a plan view of the cutter blade coupling portion of the bracket forming the lawn mower safety joint blade according to the present disclosure. And FIG. 3 is a plan view of a rotating plate forming a mower safety articulated blade according to the present disclosure.

Referring to FIG. 1, the lawn mower safety joint blade 100 is connected to a rotating shaft 20 connected to the lawn mower device and has a rotating plate 10 having a central portion that is rotatably driven 360 degrees about the rotating plate 10 and the rotating plate 10. The bracket 30 is formed by being axially coupled with the screw integrally with the rotating plate 10 in a superimposed part of the outer region.

In addition, the rotating plate 10 and the bracket 30 are integrally coupled through a plurality of upper and lower connecting shafts disposed at equal intervals, and may be preferably connected at three points.

And, the bracket 30 is composed of the upper and lower, as shown in the exploded perspective view of Figure 2, the inside is formed into an empty space.

Referring to FIG. 2 again, a plurality of cutter blades 40 are formed on the outer side of the bracket 30 and are arranged at equal intervals. Preferably, a plurality of blade connecting shafts 70 and three blades are formed at three points. The cutter blade 40 may be shaft coupled. The cutter blade 40 is freely rotated in the front-rear direction on each of the blade connecting shafts 70, and a part of the plurality of cutter blades 40 is disposed in the empty space between the upper and lower portions of the bracket 30. It is configured to be accommodated.

On the other hand, the empty space between the lower portion on the bracket 30 may be formed in a variety of forms, preferably may be formed in a circular shape so that a portion of the cutter blade 40 can be accommodated.

As shown in FIG. 3, when the empty space between the bracket 30 and the lower portion is formed in a circular shape, the shape of the rotating plate 10 is manufactured in a pentagonal shape while minimizing a circular hole at the center thereof, as shown in FIG. 1. As described above, when the rotating plate 10 is coupled to the upper and lower parts of the bracket 30, the rotating plate 10 may minimize the empty space between the upper and lower parts of the bracket 30.

Referring to the exploded perspective view of FIG. 2, the cutter blade 40 is disposed between the upper and lower portions of the bracket 30, and the upper and lower blade connecting shafts 70 and the cutter blade 40 are disposed on the upper and lower portions of the cutter blade 40. An O-ring 90 may be disposed to assist the shaft coupling between the brackets 30 and to apply an elastic force. O-ring 90 may be preferably formed in the form of a bush or bearing, to assist the rotational force of the cutter blade (40). On the lower portion of the bracket 30, a blade connecting shaft 70 is connected to allow the cutter blade 40 and the bracket 30 to be integrally coupled to the shaft.

1 and 2, when the power of the engine is transmitted to the rotating shaft 20 to rotate the mower safety articulated blade 100, a plurality of cutters coupled by the blade connecting shaft 70 and the bracket 30 The blade 40 is deployed outward due to the centrifugal force.

Therefore, the cutter blade 40 can be cut out toward the outside according to the rotation of the lawn mower safety blade 100 to cut grass, tree trunks, branches, and the like. At this time, the shape of the cutter blade 40 is wider toward the outside of the radius in order to maximize the generation of the centrifugal force so that the center of mass is located outside.

In addition, a groove 50 having a predetermined depth is formed at one side of the cutter blade 40 to improve cutting force, and grooves 50 are formed at both sides of the cutter blade 40 such that the cutter blade 40 is clockwise. Alternatively, the cutting may be easily performed so that there is no problem in the cutting operation even when rotating counterclockwise. Preferably, the grooves formed at one side of the cutter blade 40 may be formed in a half moon shape on each side of the cutter blade 40, but are not limited thereto and may have various shapes.

In addition, in the case of the lawn mower safety joint blade 100, the upper and lower portions are formed in a symmetrical structure, it can be inverted to perform additional cutting work.

On the other hand, when the cutter blade 40 is rotated while being rotated outward by centrifugal force and hits a stone, ground, or other hard foreign matter during cutting, a large resistance force is applied to the surface of the cutter blade 40. As shown in FIG. 2, the cutter blade 40 is folded into the lower portion of the bracket 30.

As illustrated in FIGS. 1 and 2, the upper and lower connecting shafts 60 and the blade connecting shafts 70 are alternately disposed at equal intervals.

Referring to FIG. 2, by alternately arranging the upper and lower connecting shafts 60 and the blade connecting shaft 70 coupling the upper and lower connecting shafts 60 and the cutter blades 40 to axially couple the bracket 30 and the rotating plate 10. The upper and lower connection shafts 60 may function as a stopper of the cutter blade 40. Accordingly, when the cutter blade 40 is folded into the bracket 30, the upper and lower connection shafts 60 may be used. ) To stop.

Then, when the lawn mower safety articulated blade 100 continues to rotate again, centrifugal force is generated in the cutter blade 40 again, and is developed to the outside. The cutter blade 40 is stopped by the upper and lower connection shafts 60. Since the inner rotation is folded by an angle of about 120 degrees, when centrifugal force is generated on the cutter blade 40 again, it is easy to unfold and cut the cutting work again.

Therefore, when the rotating plate 10 rotates together with the bracket 30 for fixing the plurality of cutter blades 40, the plurality of cutter blades 40 rotatably installed in the front and rear directions on the blade connecting shaft 70 are In the radial direction by the centrifugal force to facilitate the mowing operation, the cutter blade 40 is instantaneously raised and lowered on the bracket 30 when other foreign objects such as stones collide with the rotating cutter blade 40. The angle drawn by the upper and lower connection shafts 60 may be blocked at a predetermined angle while being introduced into the empty space between them, and the foreign material may be unfolded by the centrifugal force of the rotating plate 10 after removing the foreign matter. It is possible to secure continuous mowing work.

In addition, by forming a plurality of grooves on the side of the cutter blade 40, the cutting force is excellent compared to the conventional mowing blade, it is formed in the upper, lower symmetrical and can be used once again.

The contents of the present disclosure described above are not limited by the above-described embodiments and the accompanying drawings. It will be apparent to those skilled in the art that various substitutions, modifications, and changes can be made without departing from the spirit of the present disclosure.

100: mowing safety joint blade 10: rotating plate
20: rotation axis 30: bracket
40: cutter blade 50: groove
60: upper and lower connecting shaft 70: blade connecting shaft
90: O-ring

Claims (4)

A rotating plate having a circular central portion connected to the rotating shaft and rotatably driven;
A bracket formed integrally with the rotating plate in a state of being superimposed on the outer side of the rotating plate; And
And a plurality of cutter blades coupled to the outer one side of the bracket at multiple intervals at equal intervals.
The plurality of cutter blades are mowing safety blades, characterized in that a plurality of grooves of a predetermined depth is formed on one side.
The method of claim 1,
The bracket is mowing safety blade, characterized in that the upper and lower, the interior is formed of an empty space.
The method of claim 1,
The rotating plate and the bracket are integrally coupled through a plurality of upper and lower connecting shafts, and the bracket is coupled to the plurality of cutter blades through a plurality of blade connecting shafts so that the plurality of cutter blades are rotatably driven. Mowing safety joint blade, characterized in that.
The method of claim 2,
A mower safety articulated blade, characterized in that a portion of the plurality of cutter blades is accommodated in the empty space between the upper and lower brackets.

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