KR-102961201-B1 - cutter assembly for brush cutter

Abstract

The present invention relates to a cutter assembly for a brush cutter, comprising: a main body having an upper end coupled to the drive shaft of the brush cutter and having an internal mounting chamber; a lower cutter part made of an elastically deformable material, having both longitudinal sides protruding to both sides of the main body while coupled to the internal mounting chamber; and a pair of upper cutter parts, each having one longitudinal side coupled to a vertical rotation center provided on both sides of the main body and having a blade formed on one side in the width direction corresponding to each other.

Inventors

• 김병태

Dates

Publication Date

20260507

Application Date

20260116

Claims (4)

1. A main body having an upper end connected to the drive shaft of a brush cutter and an internal installation chamber formed therein; A lower cutter part provided with an elastically deformable material, wherein both longitudinal sides protrude toward both sides of the main body while coupled inside the installation chamber; and A pair of upper cutter parts, each having one longitudinal side connected to a vertical rotation center provided on both sides of the main body and a blade formed on one side in the width direction corresponding to each other; A pair of lifting grooves formed concavely on both upper surfaces of the main body, and A pair of mounting holes horizontally penetrating both corresponding sides of the main body and connected to the lifting groove, and A bracket provided in the above-mentioned lifting groove, having an internal insertion groove connected to the above-mentioned mounting hole, and a passage penetrating vertically through the lower surface to connect to the insertion groove, and A pressing member having a lower end inserted so as to be vertically movable into the lifting groove and positioned on one side of the bracket, and an upper end exposed to the upper part of the lifting groove, and An axial hole that penetrates vertically through the upper cutter part and is located on the same line as the passage, and A connecting shaft coupled to the shaft hole through the lower portion of the above passage, with its lower end connected to the lower end of the pressing member so as to be able to move up and down together, and A cutter assembly for a brush cutter, characterized by further including an elastic member provided in the lifting groove above and elastically supporting the pressing member upward.
2. delete
3. In paragraph 1, A pair of through holes that penetrate horizontally through corresponding sides of the main body and penetrate both longitudinal sides of the lower cutter part, and A protruding hole penetrating vertically through the lower surface of the above-mentioned main body and, A cutter assembly for a brush cutter, characterized in that it is configured to be capable of horizontal rotation and vertical movement in the above-mentioned installation chamber, wherein the lower cutter part is wound at the edge, and an operating part protruding from the lower surface includes a winding part protruding through the above-mentioned protruding hole.
4. In paragraph 1, The above main body is, The above-mentioned internal installation chamber is open to the top, and the lower body, and An upper body having an internal installation chamber that opens downwards and a lower end that is in close contact with the upper end of the lower body, and A pair of assembly grooves horizontally penetrating and provided on both sides of one of the lower body and the upper body, and It includes an assembly projection that protrudes from the top of the lower body or the bottom of the upper body and has a locking portion protruding to one side, A cutter assembly for a brush cutter characterized in that the above-mentioned catch portion is positioned to be caught at the top or bottom of the assembly groove.

Description

Cutter assembly for brush cutter The present invention relates to a cutter assembly for a brush cutter, and more specifically, to a cutter assembly for a brush cutter that allows the upper cutter part to be easily replaced and ensures operational safety by not changing the locking state. Generally, a brush cutter is a device used to cut grass or weeds short in gardens, cemeteries, parks, etc. These brush cutters are equipped with a rotatable wheel or a square metal cutter and are used to cut weeds, bushes, etc. by rotating the cutter. However, conventional brush cutters often collide with stones or rocks while rotating, frequently resulting in safety accidents due to cutter breakage or flying stones. In addition, conventional metal cutters had a cumbersome structure for replacement, as when replacement was required, the cutter had to be replaced after separating the main body using a separate tool, and then the main body had to be reassembled. In contrast, while conventional brush cutters utilize wires made of materials such as plastic, they often have strength limitations when cutting hard wood, requiring metal cutters. Prior art related to the present invention is Korean Registered Utility Model Publication No. 20-0386346 (Registration date: May 31, 2005), and the said prior art discloses a cutter assembly for a brush cutter. FIG. 1 is a perspective view for showing a cutter assembly for a brush cutter according to the present invention. FIG. 2 is a side view for showing a cutter assembly for a brush cutter according to the present invention. FIG. 3 is a plan view for showing a cutter assembly for a brush cutter according to the present invention. FIG. 4 is a bottom view showing a cutter assembly for a brush cutter according to the present invention. FIG. 5 is a cross-sectional view for showing in detail the structure of the bracket, pressing member, and operating member of the cutter assembly for a brush cutter according to the present invention. FIG. 6 is a cross-sectional view for showing in detail the coupling structure of the lower cutter part, assembly projection, and assembly groove of a cutter assembly for a brush cutter according to the present invention. FIG. 7 is a perspective view for showing in detail the reinforcing frame structure of a coupling member that is coupled with a bracket, a pressing member, and an operating member of a cutter assembly for a brush cutter according to the present invention. FIG. 8 is an enlarged cross-sectional view of a key part to show in detail the structure of a bracket, a pressing member, and an operating member of a cutter assembly for a brush cutter according to the present invention from a lateral direction. FIG. 9 is an enlarged cross-sectional view of a key part to show the state in which the operating member of the cutter assembly for a brush cutter according to FIG. 8 is moved in the unlocking direction. FIG. 10 is an enlarged cross-sectional view of a key part to show the state in which the pressing member and the operating member of the cutter assembly for a brush cutter according to FIG. 9 are lowered to the release position. A preferred embodiment according to the present invention will be described in detail below with reference to the attached drawings. The advantages and features of the present invention and the method for achieving them will become clear by referring to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited by the embodiments disclosed below but may be implemented in various different forms, and these embodiments are provided merely to make the disclosure of the present invention 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. In addition, in describing the present invention, if it is determined that related known technologies, etc., may obscure the essence of the present invention, a detailed explanation thereof will be omitted. FIG. 1 is a perspective view showing a cutter assembly for a brush cutter according to the present invention, FIG. 2 is a side view showing a cutter assembly for a brush cutter according to the present invention, FIG. 3 is a plan view showing a cutter assembly for a brush cutter according to the present invention, FIG. 4 is a bottom view showing a cutter assembly for a brush cutter according to the present invention, and FIG. 5 is a cross-sectional view showing in detail the structure of a bracket, a pressing member, and an operating member of a cutter assembly for a brush cutter according to the present invention. FIG. 6 is a cross-sectional view showing in detail the coupling structure of the lower cutter part, assembly protrusion, and assembly groove of a cutter assembly for a brush cutter according to the present invention; FIG. 7 is a perspective view showing in detail the coupling reinforcement frame structure coupled w