Cutter for lawn mowers and trimmers with drum and wire combination

Abstract

A cutter for a lawn mower and a trimmer, with a drum and wire combination, according to an embodiment of the present invention comprises: a main body which is fixed to a head portion of a lawn mower and comprises a cylindrical drum; a cutter portion comprising a cutter wire which is coupled to the cylindrical drum and removes weeds, lawns, or grass, a cutter wire support to which the end portion of the cutter wire is coupled, and a support fixing member which fixes the cutter wire support; and a twist prevention portion which is provided as a groove shape in the outer surface of the cylindrical drum provided with the cutter portion and prevents the cutter wire from being twisted.

Description

Cutter for lawn mowers and brush cutters combining drum and wire

[0001] The present invention relates to a cutter for lawn mowers and weeders that combines a drum and a wire, and more particularly, to a cutter for lawn mowers and weeders that combines a drum and a wire, which is mounted on the head of a lawn mower, weeder or weeder and has a structure in which a plurality of wires are combined with a cylindrical drum to efficiently and safely cut grass such as weeds and grass by high-speed rotation.

[0002] Weeders / mowers are generally used to remove weeds and grass growing between ridges or around seedlings in fields, rice paddies, and other areas. Lawn mowers are also used to maintain lawns in parks and gardens.

[0003] In general, the blades of lawn mowers and lawn mowers are broadly classified into straight blade type, circular saw blade type, rope type, etc., and they have a mechanism that operates through high-speed rotation in a horizontal direction with the ground.

[0004] Circular saw blades are mainly made of metal, and are safe because they cut thick grass well and do not bounce off stones, but they have the hassle of having to cut the cut grass again, which slows down the weeding process.

[0005] The straight blade type is also made of the same metal material as the circular saw type, and has two long blades that rotate at high speed. It is so powerful that it can cut not only weeds but also tree branches, so some users prefer it.

[0006] However, when there are stones on the ground with a straight blade type mower, the blade strikes the stones and bounces them outward, which poses a threat to other people around the mower, and when the blade hits a hard tree such as an acacia tree at a right angle during work, the tree is not cut down and the impact of the impact causes the tree to bounce back, and the mower connected to the blade for the mower also receives a strong impact, which causes damage to the machine, and there are cases where workers are injured by pieces of wood flying from the tree, which threatens the safety of the workers.

[0007] In the case of rope-type, compared to circular saw blades or straight blades made of the above metal material, safety is higher during work, but there is still the problem of gravel or stones on the ground flying around during work, causing injury to the worker and bystanders, and there are disadvantages such as grass or weeds not being completely cut and the rope having to be replaced frequently.

[0008] These conventional metal blades or rope-type blades often encounter problems when colliding with gravel or structures on the ground, causing gravel to fly out, injuring workers or bystanders, or damaging the blade. Furthermore, their operating environments are limited to fields, rice paddies, or seedling fields, placing significant constraints on their use.

[0009] In the case of a conventional blade for a weeder that is installed rotatably on the main body and protrudes by the centrifugal force of the main body, there is a disadvantage in that when the main body is rotated at low speed or the blade collides with a large plant, the blade folds inwardly of the main body, making it difficult to perform weeding work smoothly.

[0010] In addition, in the case of conventional technology, all of them are mechanisms that remove weeds or grass through high-speed rotation in a horizontal direction with the ground, so in the case of lawn mowers, they always have the problem of not being able to cut weeds or grass very short or effectively remove them down to the roots, and tall grasses cannot be removed at once with the lawn mower, and weeds that grow attached to the ground cannot be removed with the lawn mower.

[0011] In addition, conventional lawn mowers have the problem of the blades coming into contact with the ground or foreign objects such as stones, causing the mower to stall when the ground is uneven or there are foreign objects such as stones.

[0012] Meanwhile, in the case of the early stage, there may not be such a problem, but when working on a large area such as a park, there is the problem of it taking a long time and the problem of having to separately clean up the cut grass after working.

[0013] The present invention has been devised to solve the above-described problems, and the purpose of the present invention is to provide a blade of a lawn mower or a lawn mower made of a metal or non-metal wire material, thereby reducing the risk of injury from a metal blade during mowing and the risk to workers or bystanders from debris that may be generated.

[0014] In addition, by rotating vertically to the ground at high speed, weeds or grass can be cut very short or effectively removed down to the roots if necessary, and by utilizing the flexible nature of the wire, weeding work can be effectively done in various environments such as uneven ground, ground made of paving blocks or stones, or environments with foreign substances such as stones or tree branches, and by utilizing the high speed rotation of the wire, a cutter for lawn mowers and weed cutters is provided that combines a drum and wire to crush grass or grass very finely so that there is no need to remove debris separately.

[0015] The problems to be solved by the present invention are not limited to the problem(s) mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

[0016] A cutter for lawn mowers and weeders, which combines a drum and a wire according to an embodiment of the present invention, may include a main body portion that is fixed to a head portion and includes a cylindrical drum; a cutter portion that is coupled to the cylindrical drum and includes a cutter wire for removing weeds, grass, or grass, a cutter wire support portion to which an end of the cutter wire is coupled, and the cutter wire support portion; and a twist prevention portion that is formed in a groove shape on an outer surface of the cylindrical drum on which the cutter portion is provided and prevents twisting of the cutter wire.

[0017] According to one side, the wire for the cutter can be made of a metallic or non-metallic material, and one or more strands can be used in one joining groove.

[0018] According to one side, it may include an external protection unit having a guard for protecting workers or bystanders from debris that may occur during preliminary work by being combined with the main body and an external guide provided on the guard unit.

[0019] According to one side, the anti-twisting member may be provided in the form of a groove at a certain interval along the circumference of the cylindrical drum.

[0020] According to one side, the groove shape of the twist prevention part provided in the cylindrical drum may be provided at regular intervals in the form of a polygon depending on the material or shape of the cutter wire.

[0021] According to one side, the cutter wire support has a shape having a polygonal cross-section and has wire joining grooves provided at regular intervals, and the cutter wire can be wrapped and joined in a U shape in each of the wire joining grooves.

[0022] According to one side, the cutter wire support can be provided with various supports having different spacings of the joining grooves.

[0023] According to one side, a wire may be twisted or a fixing tube may be provided to fix the cutter wire wound around the wire joining groove of the cutter wire support.

[0024] According to one side, when fixing the cutter wire to the support, the central part of the wire is fixed with a fixing tube so that both ends of the wire can be used as cutters, and since the fixing tube is connected to the upper part of the cutter wire, it becomes thicker than the lower part of the cutter wire, thereby preventing the cutter wire from twisting.

[0025] According to one aspect, the cutter wire may be provided with a comb-shaped anti-twist guide to prevent tangling with adjacent wires.

[0026] According to one aspect, the cutter section may further include a support fixing member that fixes the cutter wire support to which the cutter wire is coupled to the cylindrical drum.

[0027] According to one aspect, the guard is provided spaced apart from both sides of the cylindrical drum, and the diameter of the guard is formed to be larger than the sum of the diameter of the cylindrical drum and the length of the cutter wire, so that the end of the cutter wire does not touch the outer edge of the guard. The guard may be provided with a structure that can be easily opened and closed.

[0028] According to one side, the external guide is attached to the front end of the guard and can position the removal target including weeds, grass or grass within the working area of ​​the cutter section.

[0029] According to one side, a power transmission device in the form of a belt, chain or gear may be provided on the rotating shaft to transmit the power required to rotate the drum at high speed.

[0030] According to one side, when using electricity as a power source, it can also be equipped as a motor / cutter integrated unit that operates as an electric motor by winding a coil around the rotating shaft of the drum and the inside of the drum.

[0031] According to one side, the drum's rotation axis or guard may be equipped with height-adjustable auxiliary wheels.

[0032] According to one side, the main body can be provided with a structure that can connect multiple parts.

[0033] According to one side, the drum can be provided in various shapes such as cylindrical, conical, and curved.

[0034] The cutter of the present invention, which combines a drum and a wire, can perform weeding work without restrictions on irregular ground conditions, concrete, asphalt, sidewalk blocks, etc., by utilizing the flexibility of the wire that cuts weeds or grass, unlike existing metal blades.

[0035] Additionally, by installing external guards, the problem of gravel or stones flying around during work and causing injury to workers or bystanders can be solved.

[0036] In addition, by performing weeding work with a high-speed rotation vertical to the ground rather than a high-speed rotation mechanism horizontal to the ground, it can effectively remove the roots of weeds and other plants to be removed on soil surfaces.

[0037] Figure 1 is a configuration diagram showing a main body and a cutter according to one embodiment of the present invention.

[0038] Fig. 2 is a drawing showing the configuration of the cutter section of Fig. 1.

[0039] FIG. 3 is a drawing showing the configuration of a cutter for a lawn mower and a lawn mower combined with a drum wire according to the disclosure of the present invention.

[0040] The advantages or features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

[0041] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings.

[0042] Figure 1 is a configuration diagram showing a main body and a cutter section according to one embodiment of the present invention.

[0043] As illustrated in FIG. 1, a cutter for lawn mowers and lawn trimmers combining a drum and a wire according to an embodiment of the present invention is a cutter that can efficiently and safely cut grass such as weeds or grass by high-speed rotation through a structure in which a plurality of wires are combined in a cylindrical drum by being mounted on the head part of a lawn mower or a lawn trimmer, and the cutter comprises a main body including a cylindrical drum (110) that is provided so that the cutter can rotate horizontally with the ground and a drum rotation shaft (120) that is provided at the inner center of the cylindrical drum (110) to rotate the cylindrical drum (110), a cutter wire (210) that is coupled to the cylindrical drum (110) to remove weeds, grass or grass, a cutter wire support (220) to which an end of the cutter wire (210) is coupled, and a support fixing member (230) that fixes the cutter wire support (220), and a cutter part that is provided in a groove shape on the outer surface of the cylindrical drum (110) to prevent twisting of the cutter wire. It may include an external protection unit having a protection belt (310) and an external guide (320) provided on the protection belt (310) to protect workers or bystanders from debris that may occur during preliminary work by being combined with the prevention unit (130) and the main body.

[0044] By this configuration, unlike existing metal blades, the cutter wire (210) of the present invention can perform weeding work without restrictions on irregular ground conditions, concrete, asphalt, sidewalk blocks, etc. by utilizing the flexibility of the wire that cuts weeds or grass, and by providing a guard (310), it can solve the problem of gravel or stones flying around during work and causing injury to the worker or bystanders.

[0045] In addition, by performing weeding work with a high-speed rotation mechanism vertical to the ground rather than a high-speed rotation mechanism horizontal to the ground, it can effectively remove the roots of weeds and other plants to be removed on soil surfaces.

[0046] When explaining each configuration, first, the main body is composed of a cylindrical drum (110) and a drum rotation shaft (120).

[0047] As illustrated in FIG. 1, the cylindrical drum (110) of the present embodiment may have a cylindrical shape, which is a columnar shape with one side open and the other side blocked, as illustrated in FIG. 1.

[0048] A drum rotation axis (120) is provided in the internal space of the cylindrical drum (110). The drum rotation axis (120) is located at the exact center of the inside of the cylindrical drum, and the cylindrical drum (110) can rotate at high speed in a horizontal direction with respect to the ground by the drum rotation axis (120).

[0049] Referring to Fig. 1, the cutter wire (210) is fixed to a cutter wire support (220) attached to a twist prevention member (130) provided in a groove shape on the outer surface of a cylindrical drum (110). The cutter wire (210) is made of a metal or non-metal wire material, and by utilizing the flexibility of the wire, weeding work can be performed without restrictions on irregular ground conditions, concrete, asphalt, sidewalk blocks, and other ground environments. In addition, the thickness or length of the wire can be adjusted depending on the work environment.

[0050] Referring to Fig. 1, the anti-twisting part (130) may be provided in a polygonal groove shape in two or more numbers on a cylindrical drum (110) depending on the working environment or purpose, and the anti-twisting part (130) controls the operating radius of the cutter wire (210) and can prevent twisting between multiple cutter wires (210) during work.

[0051] As shown in Fig. 1, the cutter wire support (220) is provided on the anti-twisting member (130), and has a shape having a polygonal cross-section, and wire joining grooves (250) are provided at regular intervals along the periphery of the cylindrical drum (110), and the cutter wire (210) can be attached at regular intervals.

[0052] Referring to Fig. 1, in order to prevent the cutter wire support (220) from detaching, a support fixing member (230) may be provided at both ends of the cutter wire support (220).

[0053] Figure 2 is a drawing illustrating the cutter section of Figure 1.

[0054] Referring to FIG. 2, a cutter wire (210) may be wrapped and connected in a U shape to each of the wire connection grooves (250) of the cutter wire support (220). A fixing tube (240) may be provided to fix the cutter wire (210) connected to the cutter wire support (220).

[0055] As shown in Fig. 2, the fixing tube (240) is connected to the upper portion of the cutter wire (210) so that it is thicker than the lower portion of the cutter wire (210), thereby preventing lower twisting between multiple cutter wires (210).

[0056] FIG. 3 is a drawing showing the configuration of a cutter for a lawn mower and a lawn mower combined with a drum wire according to the disclosure of the present invention.

[0057] Referring to FIG. 3, a guard (310) is provided spaced apart from both sides of a cylindrical drum (110), and the diameter of the guard (310) is formed to be larger than the sum of the diameter of the cylindrical drum (110) and the length of the cutter wire (210), so that the end of the cutter wire (210) may not touch the outer edge of the guard.

[0058] As illustrated in FIG. 3, an external guide (320) is attached to the front end of the guard (310) and can position a removal target including weeds, grass or grass within the working area of ​​the cutter section.

[0059] In this way, according to the present embodiment, the cutter combining a cylindrical drum (110) and a cutter wire (210) can perform weeding work without restrictions on irregular ground conditions, concrete, asphalt, sidewalk blocks, etc., by utilizing the flexibility of the wire that cuts weeds or grass, unlike existing metal blades.

[0060] Additionally, by providing external protection, it is possible to prevent gravel or stones from flying out during work and causing injury to workers or bystanders.

[0061] In addition, by performing weeding work with a high-speed rotation mechanism vertical to the ground rather than a high-speed rotation mechanism horizontal to the ground, it can effectively remove the roots of weeds and other plants to be removed on soil surfaces.

[0062] While specific embodiments of the present invention have been described so far, it is clear that various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the described embodiments, but should be determined not only by the scope of the claims set forth below, but also by equivalents thereof.

[0063] Although the present invention has been described with reference to limited embodiments and drawings, it is not limited to the above-described embodiments. Those skilled in the art will readily appreciate that various modifications and variations are possible based on the description. Therefore, the scope of the present invention should be understood solely by the scope of the claims set forth below, and all equivalent or equivalent modifications thereof are deemed to fall within the scope of the present invention.

Claims

1. A main body part that is fixed to the head part and includes a cylindrical drum (110); A cutter part including a cutter wire (210) that is coupled to the cylindrical drum (110) to remove weeds, grass or grass, a cutter wire support (220) to which an end of the cutter wire (210) is coupled, and a support fixing member (230) that fixes the cutter wire support (220): and A twist prevention part (130) provided in a groove shape on the outer surface of the cylindrical drum (110) equipped with the cutter part to prevent twisting of the cutter wire: A cutter for lawn mowers and weeders, comprising a drum and a wire, characterized in that it includes a.

2. In paragraph 1, An external protection unit having a guard (310) for protecting workers or bystanders from debris that may occur during preliminary work by being connected to the above main body and an external guide (320) provided on the guard (310); A cutter for lawn mowers and trimmers comprising a drum and wire combination, characterized in that it further includes a.

3. In paragraph 1, A cutter for lawn mowers and weeders combining drum wire, characterized in that the above-mentioned twist prevention member (130) is provided in the shape of a groove at a certain interval along the circumference of the cylindrical drum (110).

4. In paragraph 1, A cutter for lawn mowers and lawnmowers combining drum wire, characterized in that the groove shape of the twist prevention part (130) provided on the cylindrical drum (110) is provided at regular intervals in a polygonal shape according to the material or shape of the cutter wire (210).

5. In paragraph 1, A cutter for lawn mowers and weeders combined with a drum wire, characterized in that the cutter wire support (220) has a shape having a polygonal cross-section and has wire joining grooves (250) provided at regular intervals, and the cutter wire (210) is wrapped and joined in a U shape to each of the wire joining grooves (250).

6. In paragraph 4, A cutter for lawn mowers and weeders, comprising a drum wire, characterized in that a fixing tube (240) is provided to fix the cutter wire (210) wound around the wire joining groove (250) of the cutter wire support (220).

7. In paragraph 5, A cutter for lawn mowers and weeders, which combines a drum wire, characterized in that the fixing tube (240) is thicker than the lower part of the cutter wire (210) by being combined with the upper part of the cutter wire (210).

8. In paragraph 1, The above cutter part A cutter for lawn mowers and lawnmowers combined with a drum wire, characterized in that it further includes a support fixing member (230) that fixes the cutter wire support member (220) to which the cutter wire (210) is combined to the cylindrical drum (110).

9. In paragraph 2, A cutter for lawn mowers and weeders combining drum wires, characterized in that the guard (310) is provided spaced apart from both sides of the cylindrical drum (110), and the diameter of the guard (310) is formed to be larger than the sum of the diameter of the cylindrical drum (110) and the length of the cutter wire (210), so that the end of the cutter wire (210) does not touch the outer edge of the guard.

10. In paragraph 2, A cutter for lawn mowers and weeders, which combines a drum wire, characterized in that the external guide (320) is attached to the front end of the guard (310) and positions the removal target including weeds, grass or grass within the working area of ​​the cutter section.

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