KR101584705B1

KR101584705B1 - grass eliminator

Info

Publication number: KR101584705B1
Application number: KR1020150096204A
Authority: KR
Inventors: 전갑원
Original assignee: 주식회사 일광
Priority date: 2015-07-06
Filing date: 2015-07-06
Publication date: 2016-01-14

Abstract

The present invention is not only easy to replace the blades but also allows the blades to be used in both directions in both directions, thereby greatly increasing the replacement period of components and greatly reducing the maintenance cost due to provision of spare parts and parts purchase I would like to provide a lawn mower.
In order to accomplish the above object, the present invention provides a grass cutter equipped with a blade mounting part rotated by receiving power, the blade mounting part comprising a top plate and a bottom plate which are integrally assembled to each other, A lower plate having a fastening protrusion formed adjacent to the seat groove and having a lid groove corresponding to the seating groove formed on the lower surface of the upper plate and a vertical ring fitted to the seating groove at one side of the fastening protrusion, And a vertical hook is fixed by the cover groove when the upper plate is assembled.
The knife clamping ring member is formed such that one side of the knife clamping ring member is opened so that the clamping hole can be inserted through the perforated blade and the horizontal ring and the vertical ring are rotated by 90 ° so as to be able to exchange the horizontal ring and the vertical ring in the fastening protrusion .
According to the above technical arrangement, the blade clamping ring member is provided so that the blade can be installed by hanging, so that the blade can be easily replaced only by separating the upper plate and the lower plate of the blade attachment.
Particularly, since the blade clamping ring member can be used in both directions, it is possible to remarkably reduce replacement costs of spare parts and maintenance costs due to parts purchase by greatly increasing the replacement period of parts.

Description

Grass cutter {grass eliminator}

The present invention relates to a lawn mowing machine, more particularly, to a lawn mowing machine in which not only easy replacement of blades but also blade blind ring members can be used in both directions.

In general, lawn mowers are machines used to cut grass by using the rotating force of the blade.

The blade of the lawn mowers is fixedly mounted on the rotating blade mounting portion by receiving power, or the one end is fastened by the pin type and rotated integrally with the blade mounting portion.

Registration Utility Model No. 20-0253775 relates to a lawn mower having a cutting member that can be folded between a plurality of rotary plate portions when a load greater than a certain level is applied to a cutting member (blade), and a cutting device therefor, ; A plurality of rotation plate portions connected to one region of the driving means so as to be rotatable according to driving of the driving means and stacked in parallel with a predetermined distance; A cutting section provided in one area of the rotary plate section and rotating along the rotation direction of the rotary plate section to cut the object; a cutting section provided in one area of the cut section and assembled with the rotary plate section, A cutting member having a cut-in portion inserted between the rotary plate portions, a cut-off engaging portion for removing a load applied to the cut-off portion and for inserting the cut portion between the rotary plate portions when the rotary plate portion rotates at a predetermined speed or more; And a connecting member for connecting the rotary plate portion and the rotary coupling portion, and a connecting member for connecting the rotary plate portion and the rotary coupling portion of the cutting member using riveting, bolts and nuts.

According to the above technical arrangement, in a state where the rotating coupling portion of the cutting member is inserted between the rotating plate portions, the cutting member is coupled to the rotating plate portion by being connected to each other by riveting or a connecting member composed of a bolt and a nut.

That is, when the cutting member is coupled to the rotation plate by the pin method, the rotation of the rotation plate can be prevented by folding the rotation member between the rotation plate portions.

However, the conventional lawn mower and the cutting apparatus having the above-described technical arrangement have the following problems.

First, when the cutting member (blade) is bound to the rotary plate by riveting, if the blade of the cutting member is worn or the cutting member is broken, rivetting is disassembled and rivetting is performed again, so that it is difficult to replace the cutting member .

In addition, even when the cutting member is fastened to the rotary plate by the bolt and nut, the fastening of the bolt and nut is released by the vibration, and the binding force is reduced or the debris such as dust or paste is stuck on the thread, There is a problem that replacement is difficult.

Since the connecting member for connecting the rotary plate portion and the rotary engaging portion of the cutting member is of the pin type, the cutting member rotating at a high speed rotates right and left at every moment by the impact, There is a problem that not only the manufacturing cost is increased due to the provision of the spare parts for replacing the connecting member but also the maintenance cost due to the parts purchase is increased.

Disclosure of the Invention The present invention has been made in order to solve the above-mentioned problems, and it is an object of the present invention to provide an apparatus and a method for replacing blades, And to provide a lawn mower that can drastically reduce the maintenance cost associated with the maintenance.

In order to accomplish the above object, the present invention provides a grass cutter equipped with a blade mounting portion rotated by receiving power, the blade mounting portion comprising a top plate and a bottom plate which are integrally assembled to each other, An upper plate having a lower plate formed with a fastening protrusion adjacent to the seating groove and formed with a lid groove corresponding to the seating groove on the lower surface of the upper plate, a vertical ring at one side is fitted to the fastening protrusion, And a vertical hook is fixed by a cover groove when the upper plate is assembled.

The seating groove and the lid groove are concavely formed so as to partially cover and enclose a vertical hook of the blade clamping ring member.

The lower plate is roundly convex downward, and a wing groove for blowing wind on the bottom surface is formed so as to have a floating force when rotating.

The blade clamping ring member is formed such that one side of the blade is opened so as to allow the blade to be inserted through a drilled blade, and the horizontal ring and the vertical ring are rotated by 90 degrees so as to be able to exchange the horizontal ring and the vertical ring, .

The lower plate is characterized in that stepped grooves are formed inward so that the vertical hooks are exposed to the outside.

According to the present invention, there is provided a blade clamping ring member for mounting a blade, so that the blade can be easily replaced only by separating the upper plate and the lower plate from each other.

Particularly, since the blade clamping ring member can be used in both directions, it is possible to remarkably reduce replacement costs of spare parts and maintenance costs due to parts purchase by greatly increasing the replacement period of parts.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a knife mount of a lawn mower according to the present invention,
FIG. 2 is a perspective view of a blade attaching tool of a lawn mower according to the present invention,
FIG. 3 is a perspective view showing the internal structure of a blade mounting hole of a lawn mower according to the present invention,
FIG. 4 is a perspective view showing a fastening structure of a blade coupling ring member and a blade of a lawn mower according to the present invention.

Hereinafter, a preferred embodiment of a lawn mower according to the present invention will be described in detail with reference to the accompanying drawings.

First, the present invention is preferably applied to a lawn mower equipped with a blade attachment portion that receives power and is rotated.

The blade mounting part is a component that rotates by receiving power from the engine of the lawnmower through the gear part, and the blade is mounted and the grass is cut by the rotational force.

Referring to FIGS. 1 to 4, the blade mount 100 according to the present invention includes an upper plate 10 and a lower plate 20, which are integrally assembled to each other. The blade mount 100 includes a gear portion rotational shaft (not shown) An assembling hole 30 is drilled in the central portion so as to be combined and rotated integrally.

A coupling protrusion 21 is formed at one side of the upper plate 10 and the lower plate 20 of the blade mounting socket and a coupling groove 11 is formed at the other side of the coupling plate 21 corresponding to the coupling protrusion 21 and the coupling groove 11 They are assembled integrally with each other.

The lower plate 20 of the blade mounting means has a plurality of mounting grooves 22 radially formed on the upper surface thereof and a fastening protrusion 23 adjacent to the mounting grooves 22. The upper plate 10 of the blade mounting means A cover groove 12 corresponding to the seating groove is formed.

The other end side vertical hook 42 is seated in the mounting groove 22 so that the vertical hook 43 is engaged with the vertical hook 43 by the cover groove 12 when the upper plate 10 is assembled. (42) is fixed to the blade fixing ring member (40).

The vertical hook 42 of the blade clamping ring member 40 is fitted into the fastening protrusion 23 and the vertical hook 42 of the blade clamping ring member 40 is seated in the seating groove 22 of the lower plate. The blade fixing ring member 40 is firmly fixed to the blade mounting hole 100 by fixing the vertical ring 42 by the cover groove 12 during assembly.

A blade 50 having a predetermined length is fastened to the vertical ring 42 of the blade clamping ring member 40. A fastening hole 51 is formed at the rear end of the blade 50 so as to be fastened to the vertical ring 42 It is perforated.

Accordingly, the blade 50 is pivotally coupled to the vertical ring 42 and is extended outward when the blade mount 100 rotates.

Next, the seating groove 22 and the cover groove 12 are formed to be concave so as to partially surround the vertical ring 42 of the blade coupling ring member 40.

The vertical hooks 42 of the blade clamping ring member 40 are preferably formed in a circular shape and in a state in which the vertical hooks 42 are positioned between the seating groove 22 and the cover groove 12, So that the upper and lower portions of the ring 42 can be partially enclosed and fixed.

Therefore, even if centrifugal force acts on the blade 50 by the rotation of the blade mounting member 100, the blade fixing ring member 40 can be firmly held by the seating groove 22 and the cover groove 12.

Next, the lower plate 20 is roundly convex downward, and a plurality of wing grooves 60 are formed for generating wind on the bottom surface so as to have a floating force during rotation.

Specifically, the lower plate 20 is rounded convexly downward, and is easily moved in a state in which it is in contact with the ground surface. When the blade mounting member 100 rotates, a plurality of A wing groove 60 is formed.

Therefore, when the blade mounting member 100 rotates at a high speed, a floating force is generated by the wing grooves 60, thereby reducing the weight of the blade mounting member 100 and improving workability.

Next, the blade coupling ring member 40 is opened at one side of the coupling ring so that the coupling hole 51 can be inserted through the perforated blade 50, and the horizontal coupling ring 41 and the vertical hooks The horizontal loop 41 and the vertical loop 42 are formed to be symmetrical with respect to each other by rotating through 90 °.

In the above technical construction, the blade clamping ring member 40 is a part for attaching the blade 50 to the blade mount 100, and can be further provided as a spare part together with the blade 50 at the time of purchase of the grass cutter.

When the vertical hook 42 is engaged with the fastening protrusion 23, the horizontal hook 41 is engaged with the vertical hook 42 .

Therefore, when abrasion occurs in the vertical ring 42 due to friction during the use of the blade 50 on the vertical ring 42, the blade locking ring member 40 is reversed in the opposite direction, Is used as the vertical ring (42), it is possible to increase the replacement cycle of the parts and to reduce the maintenance cost for paying spare parts and purchasing the parts.

In the above technical configuration, both of the rings 41 and 42 of the blade clamping ring member 40 are kept open at one side of the ring so that the fastening holes 51 can easily be inserted into the perforated blade 50.

The lower plate 20 is formed with a stepped groove 24 inward so that the vertical ring 42 is exposed to the outside.

That is, since the blade 50 is rotatably fastened to the vertical ring 42 of the blade clamping member 40, the blade 50 may be fixed to the vertical ring 42 Or a stepped groove 24 is formed in the lower plate 20 so as to expose the vertical ring 42 to the outside so that the blade 50 and the blade attaching hole The blade 50 may be rotatably installed to reduce interference between the bodies.

Therefore, when the blade 50 hits against the stone or the base of the tree, the blade 50 is instantly turned in the direction opposite to the rotation so that the blade 50 can be prevented from being broken or the blade attachment 100 can be prevented from bouncing.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but many variations and modifications may be made without departing from the scope of the invention. It will be possible.

10: Top plate
11:
12: Cover groove
20: Lower plate
21:
22: seat groove
23: fastening projection
24: stepped groove
30: Assembly
40: blade clamping ring member
41: Horizontal hook
42: Vertical ring
50: blade
51: fastening hole
60: Wing Home
100: Blade mounting hole

Claims

1. A lawn mower (1) having a blade mounting part
The lower plate having a plurality of mounting recesses radially formed on an upper surface thereof and having a fastening protrusion formed adjacent to the mounting recesses,
The upper plate having a cover groove corresponding to the seating groove on the lower surface,
And a blade coupling ring member having a horizontal ring at one end thereof fitted into the coupling protrusion and a vertical ring at the other end in a seating groove, and the vertical ring being fixed by the cover groove when the upper plate is assembled, Mowers.

The method according to claim 1,
Wherein the seating groove and the lid groove are recessed so as to partially surround the vertical hook of the blade clamping ring member.

The method according to claim 1,
Wherein the lower plate is roundly convex downward and has a wing groove for generating wind on the bottom surface so as to have a floating force during rotation.

The method according to claim 1,
The knife clamping ring member is opened at one side of the knife so that the knife clamping hole can be inserted through a perforated blade, and the horizontal ring and the vertical ring are rotated by 90 ° so that the horizontal ring and the vertical ring can be interchanged in the fastening protrusion And is symmetrically formed.

The method according to claim 1,
Wherein the lower plate is formed with a stepped groove inward so that the vertical ring is exposed to the outside.