Blade mower using electric drill

Abstract

The present invention comprises: a bolt bit (100) which can be easily mounted on the chuck (11) of an electric drill (10) on one side and secures a rotary disc (200) having a cutting blade on the other side with a hexagonal left nut (170); a rotary disc (200) having a “ ” shape made of steel, mounted between upper and lower trough holders (140, 150) of the bolt bit (100) to increase rotational inertia and centrifugal force; a plurality of teeth (300) having a fish fin shape facing each other in a diagonal direction of the rotary disc (200) and additionally performing a cutting function; and a plurality of blade mounting parts (400) positioned horizontally at a 45° angle with respect to the plurality of teeth (300) and rotatable by riveting by a second fastening rivet (420) fastened to the rotary disc (200). By implementing a blade mower using an electric drill characterized by including a plurality of rake-shaped blades (500) that are rotatably riveted by a third fastening rivet (430) that is fastened to the plurality of blade mounting parts (400), it is possible to ensure safety during mowing in mini gardens of small urban houses, etc., and to easily double-cut grass, dense weeds, tree branches, etc., and to prevent damage to the mower and reduce over-discharge of the battery.

Description

Technology Field

[0001] The present invention relates to a blade mower, and more specifically, to a blade mower using an electric drill that enables the safety of weed cutting in mini-gardens of small urban houses and double cutting of grass or dense weeds through a bolt bit that can be mounted on an existing electric drill, a plurality of rake-shaped blades that can be rotated by a hinge axis on a plate-shaped rotating disc, and fish fin-shaped teeth. Background Technology

[0003] Medium to large-sized power mowers are used instead of conventional hand tools such as sickles or saws to remove weeds and young shrubs growing naturally in lawns or grassy areas planted in residential gardens and cemeteries. The blades used in these medium to large-sized mowers include straight blades, circular saw blades, and wires, and they are suitable for relatively large mowing areas.

[0004] In particular, when power-driven straight blades or circular saw blades are used in narrow workspaces, such as the gardens of small urban homes, contact with stones or the ground can cause damage to the blade. Furthermore, the fragments of the damaged blade are scattered in all directions by rotational force, leading to safety accidents that injure workers or neighbors nearby. Additionally, since damaged blades often need to be replaced, there are issues regarding economic losses due to replacement costs and the inconvenience of the replacement process. Moreover, weeds can get tangled or twisted at the point where the brush cutter and blade are joined, which not only reduces the efficiency of the mowing operation but also causes problems such as motor damage due to overload, shortened lifespan, wasted fuel, and over-discharge of the rechargeable battery.

[0005] In addition, when using a power mower to maintain a lawn such as a mini garden, there are noise complaints from neighbors, and there is no reason to use a medium to large mower in a narrow mowing area. However, using manual tools such as scissors, sickles, or saws can present various difficulties for the user.

[0006] To resolve these problems, an electric saw (see FIG. 1) that is inserted into an electric drill is proposed in Korean Public Patent Publication No. 10-2023-0122949 (Aug. 22, 2023).

[0007] However, the circular saw of the aforementioned patented technology is designed to cut hard objects such as wood, steel plates, or acrylic. In particular, since electric drills are equipped with drill bits or screwdrivers to create holes or drive screws, their rotational speed (RPM) is lower than that of brush cutters. Consequently, attaching a circular saw to cut grass or weeds causes slippage, making mowing nearly impossible. To remove soft grass or tender weeds, cutting blades or wires are primarily used, or high-RPM brush cutters are equipped with alloy-treated circular saws for mowing purposes. The problem to be solved

[0009] Accordingly, the objective of the present invention is to provide a blade mower using an electric drill that solves the problems of the prior art and, at the same time, ensures safety during mowing in mini gardens of small urban houses and enables easy double cutting of grass, dense weeds, and tree branches through a plurality of rake-shaped blades and fish fin-shaped teeth that can be rotated by a hinge axis on a plate-shaped rotating disc mounted on the bolt bit, thereby solving the problem of weeds getting tangled or twisted, preventing damage to the mower, and reducing over-discharge of the battery. means of solving the problem

[0011] According to the features of the present invention for achieving the aforementioned purpose, one side of the bolt bit (100) can be easily mounted on the chuck (11) of an electric drill (10), and the other side secures a rotating disc (200) having a cutting blade with a hexagonal left nut (170); and a steel “ A rotating disk (200) having a shape; a plurality of teeth (300) having a fish fin shape facing each other in a diagonal direction of the rotating disk (200) and additionally performing a cutting function; a plurality of blade mounting parts (400) that are horizontally positioned at an angle of 45° vertically with respect to the plurality of teeth (300) and are rotatable by riveting by a second fastening rivet (420) fastened to the rotating disk (200);A plurality of rake-shaped blades (500) capable of rotation are included by riveting by a third fastening rivet (430) fastened to the plurality of blade mounting parts (400), and the rotating disk (200) includes a circular fastening member (210) that is fastened between the upper and lower clamp holders (140, 150) of the bolt bit (100) and can be mounted by a hexagonal left nut (170), a first prevention projection (220) for preventing the plurality of blade mounting parts (400) that mount the plurality of rake-shaped blades (500) from overturning when the rotating disk (200) rotates at high speed, and a second prevention projection (230) fixed by a first fastening rivet (240) to prevent the plurality of rake-shaped blades (500) from folding toward the inner diameter of the rotating disk (200) when the rotating disk (200) rotates at high speed. Each is provided with a plurality of teeth (300), which are additionally provided together with the plurality of rake-shaped blades (500) and, in order to increase rotational inertia and centrifugal force, are formed in a plurality of teeth on the rotating disk (200) in a shape that gradually increases from a small tooth in the direction in which the rotating disk (200) rotates, and the plurality of blade mounting parts (400) have a peanut shape, one side is connected to the rotating disk (200), and the other side is connected to the plurality of rake-shaped blades (500) to allow rotation, wherein the upper and lower flanges (410) are riveted so that the diameter of the one side connected to the rotating disk (200) is smaller than the diameter of the other side connected to the plurality of rake-shaped blades (500). A blade mower using an electric drill is provided.

[0012] According to another embodiment of the present invention, the bolt bit (100) comprises a bit (110) mounted on the chuck (11) of the electric drill (10), a bolt (120) for fastening a hexagonal left nut (170) for fixing a rotating disk (200) having a cutting blade on a portion extending from the bit, a support jaw (130) for supporting an upper slant holder (140) at the lower end of the bit (110) and the upper end where the threads of the bolt (120) end, an upper slant holder (140) that is supported by the support jaw (130) and simultaneously holds the upper surface of the rotating disk (200), a lower slant holder (150) that holds the lower surface of the rotating disk (200) located below the upper slant holder (140), and the lower slant holder (150) It is characterized by having a protective cap (160) located on the lower surface that maintains a certain gap with the ground for safety during mowing operations and prevents the hexagonal left nut (170) from loosening, and a hexagonal left nut (170) located below the protective cap (160) that fixes the rotating disk (200) to the bolt (120) of the bolt bit (100).

[0016] According to another embodiment of the present invention, the plurality of rake-shaped blades (500) are each equipped with a blade back (510) for user safety during handling, a blade (520) for cutting weeds, and a rake (530) for gathering weeds to easily cut weeds. Effects of the invention

[0020] A blade mower using an electric drill according to a preferred embodiment of the present invention has the following effects.

[0021] (1) Unlike conventional brush cutters, the present invention allows for easy management of narrow gardens such as mini gardens through a bolt bit type cutting blade that can be mounted on an electric drill.

[0022] (2) The present invention can ensure work safety during mowing by preventing damage to the blades when they collide with stones or trees through the rotation of a plurality of blade mounting parts and a rake-shaped blade, and by preventing stones or blade fragments from scattering to the worker and surrounding workers.

[0023] (3) The present invention allows for double cutting by having multiple teeth and a rake-shaped blade perform the cutting function simultaneously, thereby solving the problem of weeds getting tangled or twisted in the part where the rotating disc is attached.

[0024] (4) The present invention can reduce the overload of the electric drill drive motor through the high rotational inertia and centrifugal force of the plurality of teeth and the plurality of rake-shaped blades, thereby preventing damage to the motor or shortening of its lifespan, as well as preventing over-discharge of the rechargeable battery. Brief explanation of the drawing

[0026] FIG. 1 is a drawing showing the prior art. FIG. 2 is a drawing showing the overall technical configuration of a blade brush cutter using an electric drill according to a preferred embodiment of the present invention. FIG. 3 is a drawing showing a bolt bit for a blade brush cutter using an electric drill according to a preferred embodiment of the present invention. FIG. 4 is a drawing showing a cutting blade attached to a bolt bit of a blade mower using an electric drill according to a preferred embodiment of the present invention. FIG. 5 is a drawing showing the shape of a rotary disc for a blade brush cutter using an electric drill according to a preferred embodiment of the present invention. FIG. 6 is a detailed drawing showing a tooth formed and mounted on a rotary disc, a blade mounting part, and a blade for a blade mower using an electric drill according to a preferred embodiment of the present invention. Specific details for implementing the invention

[0027] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. First, it should be noted that reference numerals are assigned to the components of each drawing, and that the same components are given the same reference numeral whenever possible, even if they are shown in different drawings. Furthermore, even if the same reference numeral as in the prior art is indicated, the prior art should be interpreted as such. Additionally, while describing the present invention, detailed descriptions of related known components or functions are omitted if it is determined that such detailed descriptions could obscure the essence of the present invention.

[0028] Referring to FIGS. 2 to 6, the core technical means of a blade mower using an electric drill according to a preferred embodiment of the present invention consists of a bolt bit (100), a rotating disc (200), a plurality of teeth (300), a plurality of blade mounting parts (400), a plurality of rake-shaped blades (500), and a safety cover (600).

[0029] Referring to FIGS. 2 and 3, the bolt bit (100) is a bit means that is mounted on the chuck (11) of a commercially available rechargeable or electric drill (10), and one side can be easily mounted on the chuck (11) of the electric drill (10), and the other side can be fixed to the rotary disc (200) having a cutting blade with a hexagonal left nut (170).

[0030] Additionally, the bolt bit (100) according to an embodiment of the present invention comprises: a bit (110) mounted on the chuck (11) of the electric drill (10); a bolt (120) for fastening a hexagonal left nut (170) for fixing a rotating disk (200) having a cutting blade on a portion extending from the bit; a support jaw (130) for supporting an upper slant holder (140) at the lower end of the bit (110) and the upper end where the threads of the bolt (120) end; an upper slant holder (140) that is supported by the support jaw (130) and simultaneously holds the upper surface of the rotating disk (200); a lower slant holder (150) that holds the lower surface of the rotating disk (200) located below the upper slant holder (140); and the lower slant holder (150). A protective cap (160) is provided, which is located on the lower surface and maintains a certain gap from the ground for safety during mowing operations while preventing the hexagonal left nut (170) from loosening, and a hexagonal left nut (170) is provided, which is located below the protective cap (160) and fastens the rotating disk (200) to the bolt (120) of the bolt bit (100).

[0031] Here, the bolt bit (100) has the feature that, like various screwdriver bits that can be easily mounted on the chuck (11) of the electric drill (10), one side of the bit (110) can be mounted on the chuck (11) of the electric drill (10), and the other side has a bolt (120) formed to fasten a hexagonal left nut (170) for fixing a rotating disk (200) having a cutting blade on the part extended from the bit (110), so that the user can easily mount a cutting blade like various screwdriver bits.

[0032] Referring to FIGS. 2, 5, and 6, the rotating disk (200) has a cutting blade As a rotational means for mounting and forming teeth, it is mounted between the upper and lower clamp holders (140, 150) of the bolt bit (100), and is made of steel to increase rotational inertia and centrifugal force. It has the shape of ”

[0033] Here, the upper and lower slant holders (140, 150) are parts that hold a rotating disk (200) having a cutting blade in the bolt bit (100), and can be paired as an upper slant holder and a lower slant holder, or mounted as a lower slant holder alone. In addition, the rotating disk (200) “ By processing and manufacturing to have the shape of a plurality of teeth (300) that enable additional cutting along with the plurality of rake-shaped blades (500) in the diagonal direction of the rotary disk (200), and riveting the plurality of blade mounting parts (400) that mount the plurality of rake-shaped blades (500) on the left and right sides, the rotational inertia and centrifugal force of the rotary disk (200) are greatly increased, thereby resolving the problem of weeds getting tangled or twisted with a strong cutting force during cutting work, and reducing the overload of the electric drill (10) drive motor, thereby preventing the problem of the motor being damaged or its lifespan being shortened and preventing over-discharge of the rechargeable battery.

[0034] In addition, the rotating disk (200) according to an embodiment of the present invention is provided with a circular fastening member (210) that is fastened between the upper and lower joint holders (140, 150) of the bolt bit (100) and can be mounted by a hexagonal left nut (170), a first prevention projection (220) to prevent the multiple blade mounting part (400) that mounts the multiple rake-shaped blades (500) when the rotating disk (200) rotates at high speed, and a second prevention projection (230) that is fixed by a first fastening rivet (240) to prevent the multiple rake-shaped blades (500) from folding toward the inner diameter of the rotating disk (200) when the rotating disk (200) rotates at high speed.

[0035] Here, the first prevention jaw (220) and the second prevention jaw (230) are such that when the rotating disk (200) rotates at high speed with high inertia, if the first prevention jaw (220) does not prevent the plurality of blade mounting parts (400) from being overturned in the direction of rotation, the plurality of rake-shaped blades (500) cannot have sufficient centrifugal force, and thus the phenomenon of the blades folding cannot be prevented. Additionally, through the second prevention jaw (230), if the plurality of rake-shaped blades (500) collide with a stone or thick branch during mowing and the mowing blades are temporarily stopped, the plurality of rake-shaped blades (500) may be excessively folded or jammed toward the inner diameter of the rotating disk (200), thereby preventing damage to the blades. When the temporary stop is released, the blades immediately recover centrifugal force, enabling mowing.

[0036] Referring to FIG. 6, the plurality of teeth (300) additionally perform a cutting function by having fish fin shapes facing each other in the diagonal direction of the rotating disk (200) as a means to additionally cut together with the plurality of rake-shaped blades (500) and increase rotational inertia.

[0037] In addition, according to an embodiment of the present invention, the plurality of teeth (300) are formed in a plurality on the rotating disk (200) in a shape that gradually increases from small teeth in the direction in which the rotating disk (200) rotates, in order to additionally cut together with the plurality of rake-shaped blades (500) and simultaneously increase rotational inertia.

[0038] Here, the plurality of teeth (300) are processed into a fish fin shape so as to face each other in the diagonal direction of the rotating disk (200) by laser cutting, lathe processing, or press processing when processing the rotating disk (200). By forming the plurality of teeth (300) having such a fish fin shape so as to face each other in the diagonal direction of the rotating disk (200), a flywheel effect utilizing kinetic inertia is obtained from the law of inertia, which is Newton's first law, thereby greatly increasing the rotational inertia force and centrifugal force of the blade. In other words, the plurality of rake-shaped blades (500) that can rotate within the plurality of blade mounting parts (400) can extend the blades in a straight line with high rotational inertia force and centrifugal force to easily cut dense weeds, and at the same time, through the plurality of teeth (300), weeds and tree branches that were not removed can be additionally mowing. In addition, the plurality of teeth (300) can perform double cutting together with the plurality of rake-shaped blades (500), thereby resolving the problem of weeds getting tangled or twisted at the part where the cutting blades are attached, which can further increase the cutting efficiency of the worker. Furthermore, through the high rotational inertia and centrifugal force of the plurality of teeth (300) and the plurality of rake-shaped blades (500), there is a unique feature that reduces the overload of the drive motor of the electric drill, thereby preventing problems such as damage to the motor or shortened lifespan, and preventing over-discharge of the rechargeable battery.

[0039] Referring to FIGS. 2 and FIGS. 6, the plurality of blade mounting parts (400) are a means for mounting blades for cutting grass or weeds, and are positioned horizontally at an angle of 45° vertically with respect to the plurality of teeth (300), and can be rotated by riveting by a second fastening rivet (420) that is fastened to the rotating disk (200).

[0040] Here, the plurality of blade mounting parts (400) are positioned horizontally between the plurality of teeth (300) at an angle of 45° vertically to prevent the blades from colliding with each other between the plurality of teeth (300) and the plurality of rake-shaped blades (500), increase the efficiency of double cutting performed on each of the plurality of teeth (300) and the plurality of rake-shaped blades (500), and resolve the problem of weeds getting tangled or twisted during cutting.

[0041] In addition, the plurality of blade mounting portions (400) according to an embodiment of the present invention have a peanut shape, and one side is connected to the rotating disk (200), and the other side is riveted with an upper and lower flange (410) that allows the plurality of rake-shaped blades (500) to be connected and rotated.

[0042] Here, the plurality of flanges (410) of the plurality of blade mounting parts (400) are manufactured in a peanut shape, and the one side connected to the rotating disk (200) is manufactured to have a diameter smaller than that of the other side connected to the plurality of rake-shaped blades (500), thereby increasing the rotational capability of the plurality of blade mounting parts (400). Due to this high rotational capability, the plurality of rake-shaped blades (500) can be easily folded when they come into contact with stones or wood, thereby mitigating the impact and protecting the plurality of rake-shaped blades (500).

[0043] Referring to FIGS. 2 and FIGS. 6, the plurality of rake-shaped blades (500) are riveted to rotate by means of a third fastening rivet (430) that is fastened to the plurality of blade mounting parts (400) as a means for cutting weeds or branches, etc.

[0044] Here, the plurality of rake-shaped blades (500) are fastened to the blade mounting part (400) and made rotatable by means of a 3 fastening rivet (430) so that when the plurality of rake-shaped blades (500) come into contact with a stone or thick tree during mowing, the blades are prevented from breaking through rotation within the blade mounting part (400) and prevented from scattering and causing injury to surrounding workers.

[0045] In addition, the plurality of rake-shaped blades (500) according to an embodiment of the present invention are each equipped with a blade back (510) for user safety, a blade (520) for cutting weeds, and a rake (530) for gathering weeds to easily cut weeds.

[0046] Here, the back of the blade (510) is for maintaining the durability of the plurality of rake-shaped blades (500), the blade (520) is for improving the cutting ability, and the rake (530) is for allowing the weeds to be easily cut by scraping them up through the rake (530) when cutting thick weeds using the principle of a sickle, which is a hand tool.

[0047] Meanwhile, referring to FIG. 2, the blade mower using the electric drill according to the embodiment of the present invention may further include a safety cover (600) that can be fastened to the rear of the chuck (11) of the electric drill (10) by a screw (610) for the safety of the user when performing a mowing operation by attaching a bolt bit (100) equipped with a rotating disc (200) having a mowing blade to the electric drill (10).

[0048] The foregoing description is merely an illustrative explanation of the technical concept of the present invention, and those skilled in the art to which the present invention pertains may make various modifications and variations within the scope of the essential characteristics of the present invention. Accordingly, the embodiments disclosed in the present invention are intended to explain, not limit, the technical concept of the present invention, and the scope of the technical concept of the present invention is not limited by such embodiments. The scope of protection of the present invention shall be interpreted by the claims below, and all technical concepts within an equivalent scope shall be interpreted as being included within the scope of rights of the present invention. Explanation of the symbols

[0050] 10 : Electric drill 11 : Chuck 100 : Volt bit 110 : Bit 120: Bolt 130: Support jaw 140 : Upper high tide holder 150 : Lower high tide holder 160: Protective cap 170: Hex left-hand nut 200 : Rotating disc 210 : Circular fastener 220: 1st barrier 230: 2nd barrier 240: First fastening rivet 300: Multiple teeth 400: Multiple blade mounting section 410: Upper and lower flanges 420: Second fastening rivet 430: Third fastening rivet 500: Multiple rake-shaped blades 510: Back of the blade 520 : Blade 530 : Rake 600 : Safety cover 610 : Screw

Claims

Claim 1 One side can be easily mounted on the chuck (11) of an electric drill (10), and the other side is a bolt bit (100) that secures a rotating disc (200) having a cutting blade with a hexagonal left nut (170); and a steel " which is mounted between the upper and lower clamp holders (140, 150) of the bolt bit (100) to increase rotational inertia and centrifugal force A rotating disk (200) having a shape; a plurality of teeth (300) having a fish fin shape facing each other in a diagonal direction of the rotating disk (200) and additionally performing a cutting function; a plurality of blade mounting parts (400) that are horizontally positioned at an angle of 45° vertically with respect to the plurality of teeth (300) and are rotatable by riveting by a second fastening rivet (420) fastened to the rotating disk (200);A plurality of rake-shaped blades (500) capable of rotation are included by riveting by a third fastening rivet (430) fastened to the plurality of blade mounting parts (400), and the rotating disk (200) includes a circular fastening member (210) that is fastened between the upper and lower clamp holders (140, 150) of the bolt bit (100) and can be mounted by a hexagonal left nut (170), a first prevention projection (220) for preventing the plurality of blade mounting parts (400) that mount the plurality of rake-shaped blades (500) from overturning when the rotating disk (200) rotates at high speed, and a second prevention projection (230) fixed by a first fastening rivet (240) to prevent the plurality of rake-shaped blades (500) from folding toward the inner diameter of the rotating disk (200) when the rotating disk (200) rotates at high speed. A blade mower using an electric drill, characterized in that each of the plurality of teeth (300) is provided, and in order to additionally mow together with the plurality of rake-shaped blades (500) and simultaneously increase rotational inertia and centrifugal force, the plurality of teeth are formed in the rotation disk (200) in a shape that gradually increases from small teeth in the direction in which the rotation disk (200) rotates, and the plurality of blade mounting parts (400) have a peanut shape, one side is connected to the rotation disk (200), and the other side is connected to the plurality of rake-shaped blades (500) to allow rotation, wherein the upper and lower flanges (410) are riveted so that the diameter of the one side connected to the rotation disk (200) is smaller than the diameter of the other side connected to the plurality of rake-shaped blades (500). Claim 2 In claim 1, the bolt bit (100) comprises a bit (110) mounted on the chuck (11) of the electric drill (10), a bolt (120) for fastening a hexagonal left nut (170) for fixing a rotating disk (200) having a cutting blade on a portion extending from the bit, a support jaw (130) for supporting an upper sill holder (140) at the lower end of the bit (110) and the upper point where the threads of the bolt (120) end, an upper sill holder (140) that is supported by the support jaw (130) and simultaneously holds the upper surface of the rotating disk (200), a lower sill holder (150) that holds the lower surface of the rotating disk (200) located below the upper sill holder (140), and on the lower surface of the lower sill holder (150). A blade mower using an electric drill, characterized by having a protective cap (160) positioned to maintain a certain gap from the ground for safety during mowing operations and simultaneously prevent the hexagonal left nut (170) from loosening, and a hexagonal left nut (170) positioned below the protective cap (160) to secure the rotating disk (200) to the bolt (120) of the bolt bit (100). Claim 3 delete Claim 4 delete Claim 5 delete Claim 6 A blade mower using an electric drill, characterized in that, in claim 1, the plurality of rake-shaped blades (500) are each equipped with a blade back (510) for user safety, a blade (520) for cutting weeds, and a rake (530) for gathering weeds to easily cut weeds. Claim 7 delete

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