Multi-stage nylon cutter unit for brush cutters

Abstract

This invention provides a nylon cutter unit for brush cutters that can further improve the efficiency of mowing operations. [Solution] The nylon cutter unit 100 for the brush cutter comprises a cylindrical main body 110 having multiple stepped structures stacked in the axial direction of a cylindrical shaft AX1, a shaft connecting part 120 provided on the cylindrical shaft and configured to connect the main body to the rotating shaft 810 of the brush cutter, and multiple nylon cutters 130a to 130d protruding from the sides of each of the multiple stepped structures 114a to 114d. When viewed from the axial direction of the cylindrical shaft, the multiple nylon cutters are arranged at equal intervals on the circumference of the main body.

Description

Technical Field

[0001] This specification discloses a technology related to a nylon cutter unit for a lawn mower.

Background Art

[0002] A lawn mower is a handheld machine for mowing weeds and small shrubs. The nylon cutter unit for a lawn mower is used by being attached to a rotating shaft provided at the tip of the lawn mower. From the side surface of the nylon cutter unit for a lawn mower, a nylon cutter, which is a nylon cord, protrudes. When this nylon cutter rotates at high speed, weeds and small shrubs are cut. Patent Document 1 describes a nylon cutter unit for a lawn mower in which four nylon cutters are arranged in the same rotation plane.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] For the nylon cutter unit for a lawn mower of Patent Document 1, further improvement in the efficiency of the mowing operation has been demanded.

Means for Solving the Problems

[0005] One embodiment of a nylon cutter unit for a brush cutter disclosed herein comprises a cylindrical main body having a plurality of stepped structures stacked in the axial direction of a cylindrical shaft, an axial connecting portion provided on the cylindrical shaft and configured to connect the main body to the rotating shaft of a brush cutter, and a plurality of nylon cutters protruding from the sides of each of the plurality of stepped structures. When viewed from the axial direction of the cylindrical shaft, the plurality of nylon cutters are arranged at equal intervals on the circumference of the main body. With this embodiment of the nylon cutter unit for a brush cutter, the cutting load is distributed to the plurality of nylon cutters arranged in multiple stages, thereby further improving the efficiency of the cutting work. [Brief explanation of the drawing]

[0006] [Figure 1] This is a perspective view showing a nylon cutter unit for a brush cutter. [Figure 2] This is a top view showing a nylon cutter unit for a brush cutter. [Modes for carrying out the invention]

[0007] Figure 1 is a perspective view showing the nylon cutter unit 100 for a brush cutter. Figure 2 is a top view showing the nylon cutter unit 100 for a brush cutter.

[0008] The brush cutter nylon cutter unit 100 is used by attaching it to a rotating shaft 810 located at the tip of the brush cutter 800. The brush cutter nylon cutter unit 100 comprises a main body 110, a shaft connecting part 120, and a plurality of nylon cutters 130a, 130b, 130c, and 130d.

[0009] The main body 110 of the nylon cutter unit 100 for the brush cutter is a cylindrical housing. The main body 110 has a top plate 112, multiple stepped structures 114a, 114b, 114c, 114d, and a bottom plate 118.

[0010] The top plate 112 of the main body 110 forms the top surface of the cylindrical main body 110. The top plate 112 is disc-shaped. A shaft connecting portion 120 is provided at the center of the top plate 112. The top plate 112 is connected to the rotating shaft 810 of the brush cutter 800 via the shaft connecting portion 120.

[0011] The multiple stepped structures 114a, 114b, 114c, and 114d in the main body 110 are sandwiched between the top plate 112 and the bottom plate 118. The multiple stepped structures 114a, 114b, 114c, and 114d are stacked in the axial direction of the cylindrical axis AX1 of the cylindrical main body 110. Stepped structure 114a is the first step from the top plate 112. Stepped structure 114b is the second step from the top plate 112. Stepped structure 114c is the third step from the top plate 112. Stepped structure 114d is the fourth step from the top plate 112.

[0012] An opening 116a is provided on the side of the first-stage stepped structure 114a for the nylon cutter 130a to protrude. In this embodiment, the stepped structure 114a is provided with two openings 116a. A nylon cutter 130a protrudes from each of the two openings 116a. Two nylon cutters 130a protrude from the side of the stepped structure 114a. A spool (not shown) for winding the nylon cutter 130a is provided inside the stepped structure 114a.

[0013] An opening 116b is provided on the side of the second-stage stepped structure 114b for the nylon cutter 130b to protrude. In this embodiment, the stepped structure 114b is provided with two openings 116b. A nylon cutter 130b protrudes from each of the two openings 116b. Two nylon cutters 130b protrude from the side of the stepped structure 114b. A spool (not shown) for winding the nylon cutter 130b is provided inside the stepped structure 114b.

[0014] An opening 116c is provided on the side of the third-stage stepped structure 114c for the nylon cutter 130c to protrude. In this embodiment, the stepped structure 114c is provided with two openings 116c. A nylon cutter 130c protrudes from each of the two openings 116c. Two nylon cutters 130c protrude from the side of the stepped structure 114c. A spool (not shown) for winding the nylon cutter 130c is provided inside the stepped structure 114c.

[0015] An opening 116d is provided on the side of the fourth-tiered structure 114d for allowing the nylon cutter 130d to protrude. In this embodiment, the tiered structure 114d is provided with two openings 116d. A nylon cutter 130d protrudes from each of the two openings 116d. Two nylon cutters 130d protrude from the side of the tiered structure 114d. A spool (not shown) for winding the nylon cutter 130d is provided inside the tiered structure 114d.

[0016] The bottom plate 118 of the brush cutter nylon cutter unit 100 forms the bottom surface of the cylindrical main body 110. The bottom plate 118 is disc-shaped. A button (not shown) may be provided in the center of the bottom plate 118 for extending a plurality of nylon cutters 130a to 130d from inside the main body 110.

[0017] The shaft connecting portion 120 of the nylon cutter unit 100 for the brush cutter is provided on the cylindrical shaft Ax1 of the cylindrical main body 110. The shaft connecting portion 120 is configured to connect the main body 110 to the rotating shaft 810 of the brush cutter 800. The shaft connecting portion 120 may be a bolt.

[0018] The nylon cutters 130a, 130b, 130c, and 130d in the brush cutter nylon cutter unit 100 are made of nylon cord. The two nylon cutters 130a in the first-stage stepped structure 114a protrude from positions opposite each other, straddling the cylindrical shaft AX1. The two nylon cutters 130b in the second-stage stepped structure 114b protrude from positions opposite each other, straddling the cylindrical shaft AX1. The two nylon cutters 130c in the third-stage stepped structure 114c protrude from positions opposite each other, straddling the cylindrical shaft AX1. The two nylon cutters 130d in the fourth-stage stepped structure 114d protrude from positions opposite each other, straddling the cylindrical shaft AX1.

[0019] As shown in Figure 2, when viewed from the axial direction of the cylindrical shaft AX1, the multiple nylon cutters 130a, 130b, 130c, and 130d are arranged at equal intervals on the circumference of the main body 110. In this embodiment, the multiple nylon cutters 130a, 130b, 130c, and 130d are arranged on the circumference of the main body 110 at 45° intervals in the order of nylon cutter 130a, nylon cutter 130b, nylon cutter 130d, nylon cutter 130c, nylon cutter 130a, nylon cutter 130b, nylon cutter 130d, and nylon cutter 130c.

[0020] As described above, the nylon cutter unit 100 for brush cutters distributes the cutting load to multiple nylon cutters 130a, 130b, 130c, and 130d arranged in multiple stages, thereby further improving the efficiency of the cutting work.

[0021] The technology disclosed in this specification is not limited to the above-described embodiments, examples, and variations, and can be implemented in various configurations without departing from the gist thereof. For example, among the technical features in the above-described embodiments, examples, and variations, those corresponding to the technical features in each form described in the column of the outline of the invention can be appropriately replaced and combined in order to solve part or all of the above-described problems or to achieve part or all of the above-described effects. Also, technical features not described as essential in this specification can be appropriately deleted.

[0022] The stepped structure in the main body portion 110 is not limited to four steps and may be two or more steps. The nylon cutters protruding from one stepped structure are not limited to two and may be one or more.

Explanation of Signs

[0023] 100... Nylon cutter unit for lawn mower 110... Main body portion 112... Upper surface plate 114a~d... Stepped structure 116a~d... Opening 118... Bottom surface plate 120... Shaft connecting portion 130a~d... Nylon cutter 800... Lawn mower 810... Rotating shaft AX1... Cylindrical shaft

Claims

[Claim 1] A nylon cutter unit for a brush cutter, A cylindrical main body having multiple stepped structures stacked in the axial direction of the cylindrical shaft, A shaft connecting portion is provided on the cylindrical shaft and configured to connect the main body to the rotating shaft of the brush cutter, Multiple nylon cutters protruding from the side of each of the aforementioned multi-tiered structures Equipped with, A nylon cutter unit for a brush cutter, in which, when viewed from the axial direction of the cylindrical shaft, the plurality of nylon cutters are arranged at equal intervals on the circumference of the main body.

Images