KR20130040443A

KR20130040443A - The safety-device for grass eliminator

Info

Publication number: KR20130040443A
Application number: KR1020110105216A
Authority: KR
Inventors: 한연수
Original assignee: 한연수
Priority date: 2011-10-14
Filing date: 2011-10-14
Publication date: 2013-04-24

Abstract

The present invention provides a safety mechanism mounted on the working rod (2) of the lawn mower (1) together with the cutting blade (10): provided with a coupler (21) to be coupled to the lower portion of the cutting blade (10), the outer peripheral surface Safety plate 20 provided with a radial guide 22 in the; A rotation means 30 interposed between the cutting blade 10 and the safety plate 20 to induce smooth rotation of the cutting blade 10; A rolling means (40) coupled to the rotating means (30) at the lower portion of the safety plate (20) and inducing sliding in a state where the safety plate (20) is spaced from the ground; It is formed on the inner circumferential surface of the safety plate 20, the sealing means 50 for preventing the inflow of foreign matter on the rotating means 30 and the rolling means 40; characterized in that it comprises a.
Accordingly, the present invention, while the cutting blade to prevent contact with the body of the worker or worker while preventing the accident of hard objects such as boulder to prevent safety accidents, rolling work in a state in which the working rod is in close contact with the ground As the fatigue of the worker is significantly reduced, the workability is increased, and in particular, it prevents the inflow of foreign substances during the work, thereby increasing the overall lifespan.

Description

Safety device for lawn mowers {The safety-device for grass eliminator}

The present invention relates to a safety mechanism that is mounted together with a cutting blade on the working rod of the lawn mower, and more particularly, to prevent the accident of the hard object such as boulder while the cutting blade prevents contact with the body of the worker or the worker. It is possible to roll the work rod while keeping the rod in close contact with the ground, thereby increasing workability as it significantly reduces worker's fatigue, and especially for mowers, which prevents the inflow of foreign substances during work and increases the overall life. It is about a safety mechanism.

Conventionally, mowers are used to cut weeds such as grass and remove weeds that grow on ancestral tombs before the Lunar New Year's Day and clean up the tombs, or plants that grow or thrive on arable land and harm crops. It is a machine that performs the weeding operation. Therefore, mowing machine is an essential device for those who work in agriculture, and if you are a man in Korea, who cares for the holidays, you should use it once a year.

Such a lawnmower is essentially provided with a cutting blade coupled to one end of the working rod to cut the grass, the cutting blade is a commercially available 2 blade, safety blade, saw blade, wire blade and the like. The second blade is made of metal, irrespective of the types of weeds such as rice paddy, field weed removal and orchard weeding, weeding, etc., but the highest efficiency, but there is a dangerous disadvantage that can be a dangerous weapon for beginners use. The safety blade is made of metal, and it is a relatively safe blade that prevents injuries due to the structure that the blade is folded when it hits a boulder or a hard object during work, but there is a considerable inconvenience in working due to the problem of folding the blade unnecessarily. . In addition, there is a saw blade attached to the tip of the carbide tip, but there is a problem that is limited only to cutting twigs and small trees. On the other hand, the wire blade is the safest blade among the cutting blades, and weeds are cut by nylon (synthetic resin) strings (wires) instead of metals, so the risk of injury is the lowest. There are disadvantages such as inconvenient problems that need to be replaced frequently, reducing overall work efficiency.

As such, a variety of cutting blades are provided for safety during operation, but there are various problems. Thus, the second blade of the metal material having the highest workability and compatibility is still widely used. Therefore, it is emerging as an urgent problem to solve this problem.

For example, according to Korean Patent Laid-Open Publication No. 10-2007-0093470, "roller for mower", in the roller 5 of the portable mower, which is used by being coupled to the rotating shaft 2 of the drive unit 1, the drive unit 1 Bolts (Figs. 15 and 12) or nuts (Figs. 16 and 23), which are fastening members for fastening the cutter blades 3 on the rotating shaft 2 of the shaft, are mounted on the shaft bolts (500 in Figs. A shaft shaft 500 of the roller 5 formed with a nut (Figs. 11 and 500) and the friction member 550 is coupled, a rotor casing 50 covering the outside of the shaft and being in close contact with the ground; The shaft 500 and the friction member 550 formed in the coupling to the casing 50 and mutually coupled shaft 500 and friction member 550 made of an intermittent member so as not to be separated from the outer casing 50 A roller for mowing machines with characteristics is proposed.

As another example, according to Korean Patent Publication No. 10-1021965, "Protective cover for lawn mowers and a bearing unit applied thereto" is coupled to the drive shaft to be located below the blade to protect the blade installed on the drive shaft of the lawn mower. And protruding portions having a diameter relatively larger than the rotational diameter of the blade are formed to be spaced apart from each other along the circumferential direction to protect the blade; and... Between the protection plate and the work table. A flow support having a spring member coupled to apply an elastic bias to the protection plate, and a protection tube extending to surround the spring member to prevent the protection plate from being bent when the protection plate is flown by a restoring force of the spring member; A protective cover for lawn mowers is proposed. .

In the former case, the cutter blade provides a mowing roller that prevents a collision with the ground, but there is an effect of preventing a safety accident, but the cutter blade still has an exposed state, so there is still a problem of an accident. In other words, even if the cutter blade is mounted to the roller spaced apart from the ground when the angle is inclined by the operator because the cutter blade hits the ground, it is not possible to prevent the accident completely. Of course, it is convenient to work in close contact with the roller to the ground, but it is necessary to combine a plurality of parts, in particular, there is a problem in that the output casing part is dismantled because it is not compatible with the existing mower. On the other hand, the safety accidents that actually occur during the operation are very serious accidents when the cutter blade is hit by the worker or the worker's body, and the cutter blade is exposed to the outside and does not have the conditions to prevent the accident. There is a high risk of closure.

The latter has a structure that prevents the inflow of foreign substances while preventing the accident caused by colliding with the body of the worker or the worker by providing a protective plate to prevent the blade from being exposed to the outside. However, there is a problem that the workability is remarkably inferior because the spring member is in close contact with the ground while being interlocked with the protective plate. That is, there is a problem that the fatigue is increased as the spring member is in a fixed state and the work is performed in a state in which the work rod is always spaced from the ground without the rolling work. In addition, there is a closed end that reduces the overall work efficiency because the weight of the rod is increased because a plurality of attachments are combined with a protective plate to prevent the exposure of the blade.

Korean Laid-Open Patent Publication No. 10-2007-0093470 "roller roller" Korean Patent Publication No. 10-1021965 "Protective cover for lawn mower and bearing unit applied thereto"

Accordingly, the present invention is to fundamentally solve the conventional problems as described above, while cutting blade prevents the contact of a solid object such as boulder while preventing contact with the body of the worker or the worker to prevent safety accidents, work The rolling work can be carried out while keeping the rod in close contact with the ground, which greatly reduces the worker's fatigue, thereby increasing workability, and in particular, providing a safety device for mowers that prevents the inflow of foreign substances during work and increases the overall lifespan. The purpose is.

In order to achieve the above object, the present invention provides a safety mechanism mounted on a working rod of a lawnmower, comprising: a safety plate having a coupling tool to be coupled to a lower portion of the cutting blade and having a radial guide on an outer circumferential surface thereof; A rotation means interposed between the cutting blade and the safety plate to induce smooth rotation of the cutting blade; Rolling means coupled to the rotating means in the lower portion of the safety plate, inducing the sliding in a state in which the safety plate spaced from the ground; It is formed on the inner peripheral surface of the safety plate, the sealing means for preventing the inflow of foreign matter on the rotating means and the rolling means; characterized in that it comprises a.

At this time, the guide of the safety plate according to the present invention is characterized in that it is provided with one or more bent bent at one end, and provided with a protective cover to prevent 튐 while inducing to be coupled to the working rod from the fixture.

In addition, the rotating means according to the present invention is a rotating body that is in close contact with the cutting blade, the fixed body for holding the safety plate fixedly, and the rotation of the safety plate from the cutting blade is interposed in the center of the rotating body and the fixed body It is characterized by including a bearing for blocking.

In addition, the rolling means according to the present invention is provided with a rolling body coupled to the rotating means at intervals that do not interfere with the safety plate, and is provided with a bearing which is rotated to slide from the ground interposed in the center of the rotating means and the rolling body It features.

In addition, the sealing means according to the invention is characterized in that it comprises a closed end bent in multiple stages so that the rotating means and the rolling means on the upper and lower surfaces of the safety plate from the outside.

It should be understood, however, that the terminology or words of the present specification and claims should not be construed in an ordinary sense or in a dictionary, and that the inventors shall not be limited to the concept of a term It should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention based on the principle that it can be properly defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, It is to be understood that equivalents and modifications are possible.

As described in the above configuration and operation, the present invention is a state in which the cutting blade prevents the contact of the body of the worker or the worker while preventing the accident of a hard object such as boulder to prevent a safety accident, the working rod is in close contact with the ground As rolling work can be performed, the fatigue of the worker can be significantly reduced, thereby improving workability. In particular, it prevents the inflow of foreign substances during the work, thereby increasing the overall service life.

1 is a perspective view showing the lawn mower to which the safety mechanism according to the present invention is applied as a whole.
Figure 2 is a perspective view showing the safety mechanism according to the present invention from various angles.
Figure 3 is an exploded view showing a separate safety mechanism according to the present invention.
Figure 4 is a cross-sectional view showing the safety mechanism according to the present invention.
Figure 5 is a working state showing the mowing process of the lawn mower to which the safety mechanism according to the present invention is applied.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The present invention relates to a safety mechanism mounted together with a cutting blade 10 on the working rod 2 of the lawn mower 1, and includes a safety plate 20, a rotation means 30, a rolling means 40, a sealing means ( For mower safety mechanisms having 50) as main components. Here, the safety mechanism of the present invention is coupled to the working rod 2 of the lawn mower 1 as shown in FIG. 1, and is not limited to the specific lawn mower 1, and it is apparent that the safety mechanism may be coupled regardless of various types and structures. In addition, the cutting blade 10 is a two- or three-degree blade made of a metal material, a safety blade of the metal material folding the blade, a wire blade made of a resin material and the like, but is limited to the second or third blade of the highest risk during operation. On the other hand, the cutting blade 10 may be used in the form of a conventionally widely used or may be formed in a bent form to interlock with the sealing means 50, which will be described later, although not shown through the drawings.

Safety plate 20 according to the present invention is provided with a coupler 21 to be coupled to the lower portion of the cutting blade 10, and has a radial guide 22 on the outer peripheral surface. Safety plate 20 is coupled to one end of the working rod (2) together with the cutting blade 10, to prevent the cutting blade 10 is in contact with the operator or the body of the worker or hit the ground to prevent safety accidents . That is, the safety plate 20 is a disk shape larger than the diameter of the cutting blade 10, as shown in Figures 2 and 3, the coupling hole penetrated in the center to be coupled in a state that does not contact the lower portion of the cutting blade 10 ( 21, and a radial guide 22 is integrally provided on the outer circumferential surface thereof.

Here, the guide 22 serves to prevent a substantial safety accident, while cutting the cutting blade 10 so as not to come into contact with the body or the ground so that the grass or weeds are cut into the cutting blade 10 to be cut. Play a role at the same time. That is, since the guide 22 is formed larger than the outer diameter of the cutting blade 10, it blocks direct contact with the outside and induces cutting of grass or weeds into the space between the guide 22 and the guide 22. . The guide 22 is preferably formed in a relatively small area so as not to crush the grass or weeds at the time of forming a plurality of narrow angle range to narrow the space. On the other hand, although the guide 22 is not shown through the drawings, it is also possible to have a plurality of through holes so that a larger amount of grass or weeds are introduced.

At this time, the guide 22 of the safety plate 20 according to the present invention is provided with one or more bent fixing rod 23 at one end, and prevents 하면서 while inducing to be coupled to the working rod 2 from the fixing member 23. A protective cover 25 is provided. The safety plate 20 is mounted on the lower part of the cutting blade 10 to prevent a safety accident, while fixing the work stick 2 from the working rod 2 so as not to interlock with the rotating cutting blade 10 while working grass or weeds It is provided with a holder 23 and a protective cover 25 to prevent the splashing toward. That is, the outer circumferential surface of the safety plate 20 is provided with a radial guide 22, it is provided with a fixing table 23 bent one end of any one of the plurality of guides 22 to the top. The protective cover 25 is formed in a semi-circle so as to seal a part of the upper surface of the cutting blade 10, is engaged with the fixing table 23 is coupled by a screw or bolt. And the protective cover 25 is fully coupled to the working rod (2) through the connecting table (26). As such, it is completely fixed to the working rod 2 through the holder 23 and the protective cover 25 to prevent rotation and shaking, and to prevent the grass or weeds from splashing to the worker during operation, thereby improving workability and stability.

In addition, the rotating means 30 according to the present invention is interposed between the cutting blade 10 and the safety plate 20 to induce smooth rotation of the cutting blade 10. The rotating means 30 prevents the cutting blade 10 and the safety plate 20 from being rotated from the cutting blade 10 while inducing each of the cutting rods 10 to be coupled to one end of the working rod 2. That is, the rotation means 30 is interposed between the cutting blade 10 and the safety plate 20 as shown in FIG. 3 so that the cutting blade 10 and the fixed safety plate 20 are rotated so as not to interlock with each other in a state adjacent to each other. It is a medium to play a role. The rotating means 30 is not limited to a particular mowing device (1) and is compatible to enable coupling regardless of various types and structures.

At this time, the rotating means 30 according to the present invention is a rotating body 31 to rotate in close contact with the cutting blade 10, a fixed body 32 for receiving the safety plate 20 fixedly, and the rotating body 31 is provided in the center of the fixed body 32 and the bearing 35 which blocks the rotation of the safety plate 20 from the cutting blade 10. Rotating means 30 is interposed between the cutting blade 10 and the safety plate 20 is a medium for performing a blocking role so that the rotating cutting blade 10 and the fixed safety plate 20 do not interlock with each other in a state adjacent to each other As the cutting body 10 and the safety plate 20, the rotating body 31, the fixed body 32 and the bearing 35 are respectively coupled.

The rotating body 31 is to fix the bottom surface of the cutting blade 10 from the working rod 2 so that the rotational force is supplied, and has a through hole to be coupled to the rotating shaft protruding to one end of the working rod 2 in the center. And it has a receiving groove (31a) for receiving the fixing bolt (B) is fastened to the rotating shaft at the bottom. The rotating body 31 is completely fixed together with the cutting blade 10 by the fixing bolt (B) is supplied with rotation to the rotating shaft to rotate.

The fixed body 32 is coupled to the lower portion of the rotating body 31 at intervals that do not interfere with each other to prevent interlocking with the rotating body 31, and is stepped to accommodate a portion of the rotating body 31 in the center. One or more fastening grooves 32a are provided with a through hole and induced to be coupled by a safety plate 20 and a bolt tightly attached to an outer circumferential surface thereof. The fixture 32 has a fixed state with the safety plate 20 without being interfered with the rotation of the rotor 31.

The bearing 35 is interposed at the center where the rotating body 31 and the fixing body 32 are coupled to each other to block the rotation of the safety plate 20 from the cutting blade 10, and a ball or a roller is provided between the inner ring and the outer ring. Interleaved normal rolling bearings. That is, the inner ring of the bearing 35 is inserted in the state engaged with the outer circumferential surface of the rotating body 31, and the outer ring is inserted in the state engaged with the through hole of the fixing body 32. As described above, the rotating body 31 which rotates together with the cutting blade 10 is blocked from rotating while passing through the bearing 35 so that the safety plate 20 together with the fixing body 32 has a fixed state. As a result, the rotating means 30 minimizes the generation of the load of the cutting blade 10 even when the cutting blade 10 and the fixed safety plate 20 are rotated in close proximity to each other to enable smooth rotation.

In addition, the rolling means 40 according to the present invention is coupled to the rotating means 30 in the lower portion of the safety plate 20, induces the sliding safety plate 20 in a state spaced apart from the ground. The rolling means 40 serves to guide the work even if the worker does not hold the working rod 2 continuously. The rolling means 40 is coupled to the rotating means 30 at the lower part of the safety plate 20 to provide the safety plate 20. Slide in a spaced distance from the ground. That is, the rolling means 40 enables a rolling operation capable of pushing and pulling or changing the direction in the state of supporting the working rod 2 from the ground.

At this time, the rolling means 40 according to the present invention includes a rolling body 41 coupled to the rotating means 30 at intervals that do not interfere with the safety plate 20, and the rotating means 30 and the rolling body ( It is provided with a bearing 45 interposed at the center of 41 to rotate slidingly from the ground. Rolling means 40 is to enable the rolling work that the operator can push and pull or change the direction while supporting the working rod 2 on the ground without constantly holding the working rod (2), safety plate ( The rolling body 41 and the bearing 45 coupled to the rotating means 30 are coupled to the lower portion of the 20.

The rolling body 41 supports the overall weight of the working rod 2 while being in close contact with the ground, and has stepped through holes to receive a part of the fixing body 32 at intervals that do not interfere with the safety plate 20. It is provided. The rolling body 41 is formed to have a predetermined height so that the safety plate 20 is supported in a state spaced apart from the ground and rotates independently of the fixed safety plate 20 and the fixed body 32 without interlocking.

The bearing 45 rotates independently of the rolling body 41 and the fixed body 32 to be coupled to each other to enable the rolling operation by the worker, and a ball or roller is interposed between the inner and outer rings. It is a rolling bearing. That is, the inner ring of the bearing 45 is inserted in the state engaged with the outer circumferential surface of the fixed body 32, and the outer ring is inserted in the state engaged in the through-hole of the rolling body 41. As such, the bearing 45 induces the rolling body 41 to be rotated to enable the rolling operation in a state in which the rolling body 41 is in close contact with the ground. As a result, the rolling means 40 minimizes the frictional force with the ground to enable the rolling operation while supporting the overall weight of the working rod (2).

In addition, the sealing means 50 according to the present invention is formed on the inner circumferential surface of the safety plate 20, and prevents the inflow of foreign matter on the rotating means 30 and the rolling means 40. The sealing means 50 is sealed so that the rotating means 30 and the rolling means 40 are not exposed to the outside to prevent the inflow of foreign substances. That is, the sealing means 50 is formed entirely on the inner circumferential surface of the safety plate 20 interposed between the rotating means 30 and the rolling means 40 to prevent the grass or weeds from being caught during operation.

At this time, the sealing means 50 according to the present invention has a closed end 51 bent in multiple stages so as to seal the rotating means 30 and the rolling means 40 from the outside on the upper and lower surfaces of the safety plate 20. The sealing means 50 is to prevent the inflow of foreign matter by sealing the rotary means 30 and the rolling means 40 from the outside as much as possible, and has a closed end 51 bent in multiple stages on the upper and lower surfaces of the safety plate 20. .

The closed end 51 is a 'b' type and 'b' type is continuously bent on the upper and lower surfaces of the safety plate 20, the 'b' type bent into the upper surface rotates close to the cutting edge 10 at a fine interval The means 30 is sealed, and the 'b' shape bent into the lower surface closes the rolling body 41 at minute intervals to seal the rolling means 40. That is, the closed end 51 prevents grass or weeds from entering and tangling into the rotating means 30 and the rolling means 40 during operation.

If it is assumed that there is no closed end 51, when grass or weeds flows into the rotating means 30 and the rolling means 40 at the time of work, the cutting blade 10 is entangled. When the cutting blade 10 is stopped, there is a significant load on the engine, which increases the wear of the clutch using centrifugal force. In this way, the sealing means 50 prevents grass or weeds from getting tangled during operation, thereby improving workability and preventing overall failure of the lawn mower 1 to extend its life.

In the operation showing the mowing process of the lawn mower to which the safety mechanism is applied using FIG. 5, the safety mechanism of the present invention is safe to the lawn mower 1 already supplied except for the state basically coupled to the lawn mower 1 at the time of shipment. It will be described as performing the mowing operation by applying the mechanism and the safety mechanism is supplied to the assembly state in which both the safety plate 20 and the rotating means 30 and the rolling means 40 are combined.

First, the lawn mower 1 owned by an individual, an institution, or a group is fixed using a tool to apply a safety mechanism because only the cutting blade 10 is fastened to the end of the working rod 2 as the fixing bolt B. Unscrew and disassemble bolt (B) completely. Subsequently, after the safety plate 20, the rotating means 30, and the rolling means 40 are coupled to the lower portion of the cutting blade 10, the fixing bolt B is fastened by using a tool. Since the safety plate 20 is rotated in the current state, it is coupled to the working rod 2 by using the spring S together with the bracket 25 from the holder 23 provided in the safety plate 20.

And when the safety mechanism is mounted on the lawn mower (1) can start the operation to cut the grass or weeds, as shown in Figure 5 to perform the mowing operation while pushing, pulling and rotating the rod (2) seated on the ground. If, even if there is a boulder or a hard object on the ground to prevent the safety plate 20 to hit the cutting blade 10 to prevent the risk of accidents such as 튐. And the general mowing operation is to hold the working rod (2) with both hands and then work to rotate the working rod (2) to the left and right around the operator in a state separated from the ground, rolling means 40 that can rotate itself Through this, you can work easily without putting a lot of pressure on the ground.

As described above, the present invention prevents the accident of a hard object such as a rock while preventing the cutting blade contact with the body of the worker or the worker to prevent safety accidents, rolling work in a state in which the working rod is in close contact with the ground. As the fatigue of the worker is significantly reduced, the workability is increased, and in particular, it prevents the inflow of foreign substances during the work, thereby increasing the overall lifespan.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is therefore intended that such variations and modifications fall within the scope of the appended claims.

1: mower 2: working rod
B: fixing bolt 10: cutting blade
20: safety plate 21: coupler
22: guide 23: guide
25: protective cover 26: connecting rod
30: rotating means 31: rotating body
31a: receiving groove 32: fixed body
32a: Tightening groove 35, 45: Bearing
40: rolling means 41: rolling body
50: sealing means 51: sealing end

Claims

In the safety mechanism mounted together with the cutting blade 10 on the working rod 2 of the mower 1:
A safety plate 20 having a coupler 21 to be coupled to a lower portion of the cutting blade 10 and having a radial guide 22 on an outer circumferential surface thereof;
A rotation means 30 interposed between the cutting blade 10 and the safety plate 20 to induce smooth rotation of the cutting blade 10;
A rolling means (40) coupled to the rotating means (30) at the lower portion of the safety plate (20) and inducing sliding in a state where the safety plate (20) is spaced from the ground;
Is formed on the inner circumferential surface of the safety plate 20, the sealing means for preventing the introduction of foreign matter on the rotating means (30) and the rolling means (40); Safety mechanism for mowers comprising a.

The method of claim 1,
The guide 22 of the safety plate 20 has one or more bent guides 23 at one end thereof, and a protective cover 25 for preventing 튐 while inducing the coupler 2 to be coupled with the working rod 2 from the holder 23. Safety mechanism for mowing grass characterized in that it comprises a.

The method of claim 1,
The rotating means 30 is a rotating body 31 which rotates in close contact with the cutting blade 10, a fixed body 32 for receiving the safety plate 20 fixedly, and the rotating body 31 and the fixed body Safety device for mowers interposed at the center of the (32) having a bearing (35) to block the rotation of the safety plate 20 from the cutting blade (10).

The method of claim 1,
The rolling means 40 has a rolling body 41 coupled to the rotating means 30 at intervals that do not interfere with the safety plate 20, interposed at the center of the rotating means 30 and the rolling body 41. And a bearing (45) which rotates so as to slide from the ground.

The method of claim 1,
The sealing means 50 is a safety mechanism for mowers, characterized in that the upper and lower surfaces of the safety plate 20 has a closed end 51 bent in multiple stages so as to seal the rotating means 30 and the rolling means 40 from the outside. .