KR20170103189A - The lawn mower equipped with a spray device - Google Patents

Abstract

The present invention relates to a lawn mower configured to rotate a cutter blade coupled to a driving shaft provided on an end of a work rod by receiving rotatory power generated by a power generation portion. The lawn mower has a spraying device formed therein and includes a pipe formed inside the driving shaft, a chemical storage tank for storing chemicals, a supply pipe for connecting the chemical storage tank to the pipe of the driving shaft, an opening and closing means for opening and closing the supply pipe, and a discharge nozzle coupled to a lower side end of the pipe and projecting from a bottom surface of the cutter blade. The chemicals contained in the chemical storage tank is supplied to the pipe through the supply pipe, and the discharge nozzle provided at a lower portion of the pipe rotates together with the cutter blade such that the chemical solution is sprayed toward the ground by centrifugal force. Accordingly, the present invention aims to provide a lawn mower provided with a spraying device capable of performing functions of a general lawn mower and also effectively spraying chemicals by discharging the chemicals to a desired area by using rotatory power of a cutter blade while a user mows the lawn without an additional power system.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lawn mower having a spray device,

The present invention relates to a lawn mower having a spraying device, and more particularly, to a lawn mower which rotates a cutter blade coupled to a drive shaft provided at an end of a work rod by receiving a rotational force generated from a power generating portion, A supply pipe connected to the chemical solution reservoir and a channel of the drive shaft; opening and closing means for opening and closing the supply pipe; and a valve mechanism coupled to a lower side end of the pipe, The chemical liquid accommodated in the chemical liquid reservoir is supplied to the conduit through the supply pipe and the discharge nozzle provided at the lower portion of the conduit rotates together with the cutter blade so that the chemical liquid is discharged to the ground through the centrifugal force So that the user can perform the mowing operation without a separate power device, By discharging the drug solution in the area of the target using a force directed to an apparatus equipped with a spray that can be sprayed effectively lawn mower.

Generally, mowers are used to remove weeds or scratches. They have a structure in which a rotary blade is installed at the bottom of a gear box connected to a gripper bar.

These lawn mowers are provided for use at the time of sowing, but there is a limited storage and management difficulty because they can be utilized.

In addition, since the conventional pesticide spraying apparatus distributed to a farmhouse is configured to pump the medicine tank by the lever which is operated by the hand, or by using the pumping motor or the like, the operation is inconvenient and the drug solution There is a problem that it is difficult to treat the remaining chemical liquid after spraying.

Although a device for spraying pesticides using a pump or a high-pressure gas has been proposed, a small-sized motor pump which can be used to drive such a pump can not be used because of the need for electricity. In the case of an engine pump supplied to a farmhouse, there is a problem that it is heavy enough to be moved by using a vehicle.

A prior art related to this is disclosed in Korean Patent No. 10-0998922 entitled " a high pressure sprinkling device using a driving motor of a mower, " which discloses a driving motor used in a mower; A blower connected to an output shaft of the driving motor so as to transmit driving force; A connecting pipe member having a bending wrinkle portion having one side connected to an outlet of the blower; A nozzle cover to which the other of the connecting pipe members is connected; A nozzle assembly connected to the connection pipe member and positioned in the nozzle cover; A water supply joint member connected to the connection pipe member located behind the nozzle assembly; A water supply hose connected to the water supply joint member; A backing member mounted to the driving motor and the blower so as to be placed on the receiving unit; And a handle member provided on the nozzle cover. The nozzle member ejects a fluid to the air injected through the blower.

The present invention provides a lawn mower equipped with a spraying device capable of spraying a chemical solution to a target area by using a rotating force of a cutter blade while a user is performing a mowing operation without using a separate power device, The purpose is to provide.

Further, it is an object of the present invention to allow a user to avoid the waste of the chemical liquid and to handle the chemical liquid efficiently by allowing the user to separate from the conventional method of mixing and injecting various kinds of chemical liquids and to mix them at a certain ratio only during storage while being separately stored.

In addition, since the operation rod and the cutter blade can be easily separated and combined for maintenance or repair, it is easy to handle, and a spraying device capable of spraying the chemical solution only in a desired range by limiting the range in which the chemical liquid is sprayed The present invention has been made in view of the above problems.

The present invention relates to a mower that receives a rotational force generated from a power generating unit and rotates a cutter blade coupled to a drive shaft provided at an end of a work rod, the mower pump comprising: a chemical solution reservoir formed with a channel inside the drive shaft, And a spraying device including a supply pipe connecting the chemical solution reservoir and a drive shaft of the drive shaft, opening and closing means for opening and closing the supply pipe, and a discharge nozzle coupled to an end portion of the lower end of the pipe, The chemical solution contained in the chemical solution reservoir is supplied to the channel through the supply pipe and the chemical solution is injected toward the ground by the centrifugal force while the discharge nozzle provided at the lower part of the channel rotates together with the cutter blade.

According to the present invention, the discharge nozzle is open at its upper portion and coupled to the lower end portion of the drive shaft, and the side surface thereof has a discharge hole communicating with the inside thereof, and the range in which the chemical liquid is sprayed is adjusted according to the inclination degree and diameter of the discharge hole .

In addition, it is preferable that the present invention further comprises adjusting means for controlling the discharge of each chemical solution reservoir, the plurality of chemical solution reservoirs being connected to the supply pipe.

In addition, according to the present invention, the cutter blade has a protective cover which surrounds the periphery of the discharge nozzle and protrudes downward and is integrally fastened to the drive shaft, wherein the protective cover is provided with a hollow portion, And an exhaust port for exhausting the intake air is formed on the bottom surface of the protective cover. The protective cover rotates integrally with the drive shaft, and the air sucked by the exhaust port is discharged downward, And is preferably configured to limit the range to be sprayed.

The present invention provides a lawn mower equipped with a spraying device capable of spraying a chemical solution to a target area by using a rotating force of a cutter blade while a user is performing a mowing operation, as well as a conventional lawn mower function.

According to the present invention, the user can avoid the waste of the chemical liquid and can handle the chemical liquid efficiently by allowing the user to separate from the conventional method of mixing and injecting various kinds of chemical liquids, have.

In addition, since the inlet pipe is integrally formed with the gear box, it is easy to handle and disassemble the gear box and the supply pipe coupled to the work rod and the work rod, and also the protective cover covers the periphery of the discharge nozzle, An air curtain in the form of a conical tube is formed to limit the range in which the chemical liquid injected through the ejection nozzle is injected, so that the chemical liquid can be injected only in a desired range by the user.

1 is a schematic diagram illustrating a preferred embodiment according to the present invention.
Fig. 2 is an exploded view of a working rod and a cutter blade according to the present invention. Fig.
3 is a sectional view showing the inside of the gear box according to the present invention.
4 is a partial enlarged view of the portion " a "
FIG. 5 is a partial enlarged view of a portion 'b'
Fig. 6 is a state diagram showing that chemical liquid is ejected from the ejection nozzle according to the present invention
7 is a rear perspective view of a preferred embodiment according to the present invention.
FIG. 8 is a partial enlarged view of the portion 'c'
9 is a bottom perspective view of a protective cover according to the present invention.
10 is a state diagram showing that the protective cover of the present invention forms an air curtain and the chemical liquid is injected into the air curtain

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic view showing a preferred embodiment according to the present invention, FIG. 2 is an exploded view of a working rod and a cutter blade according to the present invention, FIG. 3 is a sectional view showing the inside of a gear box according to the present invention, FIG. 5 is a partial enlarged view of the portion 'b' of FIG. 3, FIG. 6 is a state view showing that chemical liquid is ejected from the ejection nozzle according to the present invention, and FIG. FIG. 9 is a bottom perspective view of a protective cover according to the present invention, and FIG. 10 is a side view of a protective cover according to the present invention. FIG. Is formed into an air curtain and the chemical liquid is injected into the air curtain.

The embodiments of the present invention are described in order to more fully explain the present invention to those skilled in the art, and the following embodiments may be modified into various other forms, It is not limited to the embodiment. Rather, these embodiments are provided so that this disclosure will be more thorough and complete, and will fully convey the concept of the invention to those skilled in the art. In the drawings, the thickness and size of each layer are exaggerated for convenience and clarity of explanation.

As shown in FIG. 1, according to the present invention, a cutter blade 3 coupled to a drive shaft 10 provided at an end of a work rod 2 is received by receiving a rotational force generated from a power generator 1, A liquid supply tank (20) for storing a liquid chemical liquid; a supply pipe (30) connecting the chemical liquid storage tank and a channel of the drive shaft; A spraying device including an opening and closing means 40 for opening and closing a supply pipe and an ejection nozzle 50 coupled to a lower end of the pipe to protrude from a bottom surface of the cutter blade, And the ejection nozzle provided at the lower portion of the duct is rotated together with the cutter blade so that the chemical solution is ejected toward the ground by the centrifugal force.

Generally, the lawn mower is configured to rotate the cutter blade 3 coupled to the driving shaft 10 provided at the end of the work rod 2 by receiving the rotational force generated from the power generating unit 1. [

The power generation unit 1 includes an engine that generates power by burning fuel therein, and a rotor that rotates by the power of the engine.

The working rod 2 is provided with a rotating shaft rotatable therein. The working rod 2 has a handle for grasping by a user on one side, and a rotating force transmitting means for connecting the rotor of the power generating unit and the rotating shaft of the working rod.

The rotational force transmitting means is made of a rotatable material so that the user can grip the work rod by hand and control the working position and direction.

The cutter blade 3 is fixedly coupled to a drive shaft provided at an end of the work rod, and cuts the grass that has grown on the ground by rotating by the rotational force generated from the power generating portion.

As shown in FIGS. 2 to 3, the drive shaft 10 is disposed at an end portion of the work rod in a direction perpendicular to the paper surface, and a second gear engaged with a first gear, It is preferable that the first gear and the second gear are provided so as to be engaged with each other so as to rotate and a gear box 5 accommodating the first gear and the second gear inside.

The spray device further includes a chemical liquid reservoir (20) for storing a liquid chemical liquid, and a chemical liquid reservoir (20) for connecting the chemical liquid reservoir and the channel of the drive shaft An opening and closing means 40 for opening and closing the supply pipe 30, and a discharge nozzle 50 coupled to a lower side end of the pipe and protruding to the bottom surface of the cutter blade.

As shown in FIG. 3, a channel 11 is formed through the drive shaft 10 from the upper side to the lower side to allow the chemical liquid to move.

4, the drive shaft 10 is installed vertically in the gear box 5, and the end of the work rod 2 is inserted into the gear box 5 so that the rotation shaft is inserted And the other end is connected to the driving shaft 10 and the other end is connected to the other end of the driving shaft 10, And a fitting protrusion 121 is formed which is curved so as to coincide with the inner circumferential surface of the gear box and protrudes to the inner space of the gear box.

The drive shaft 10 has a channel 11 therein and an insertion groove 13 is formed at an upper portion of the drive shaft 10 to receive the insertion protrusion 121 protruded into the gear box.

It is preferable that a sealing o-ring is provided between the side surface of the fitting protrusion and the inner circumferential surface of the insertion groove so that the chemical solution flowing into the conduit 11 through the inlet conduit 12 is not discharged into the gap.

Therefore, even if the drive shaft 10 rotates, the input channel 12 formed in the gear box and the channel 11 formed in the drive shaft are stably connected and the chemical solution is not discharged to the outside.

Preferably, the inlet pipe 12 is integrally formed with the gear box 5, so that the separation and coupling of the feed pipe 30 and the gear box 5 coupled to the work rod 2 and the work rod Thereby facilitating easy handling.

The chemical liquid reservoir 20 receives and stores the liquid chemical liquid, and is preferably fixedly coupled to one side of the power generating unit 1.

One end of the supply pipe 30 is connected to the bottom surface of the chemical solution reservoir 20 and the other end thereof is connected to the end of the supply path 12.

The opening / closing means 40 opens / closes the supply pipe, and is preferably fixed to the handle portion coupled to one side of the work rod so as to easily open / close the supply pipe 30 connecting the chemical solution reservoir 20 and the pipe line 10 Respectively.

The discharge nozzle 50 is coupled to the lower side end of the channel 10 and protrudes from the bottom surface of the cutter blade 3.

6, the chemical solution contained in the chemical solution reservoir 20 is supplied to the pipeline 11 through the supply pipe 30, and the discharge nozzle 50 provided at the lower portion of the pipeline is connected to the cutter 30, And the chemical liquid is ejected toward the paper surface by the centrifugal force while rotating together with the blade 3. [

As described above, the present invention can be applied not only to the conventional lawn mowing machine but also to a lawn mower equipped with a spraying device capable of spraying the chemical liquid to a target area by using the rotational force of the cutter blade 3 while the user is mowing, .

As shown in FIG. 5, the discharge nozzle 50 is open at the top and coupled to the lower end of the drive shaft, and has a discharge hole 51 communicating with the inside at its side surface. The range in which the chemical liquid is sprayed is controlled, and the size of the water droplet sprayed according to the diameter of the discharge hole is adjusted.

That is, the discharge nozzle 50 is coupled to the lower end of the conduit 10 so as to protrude from the bottom surface of the cutter blade 3, whereby the chemical solution flowing into the conduit 10 flows into the discharge hole 51 The discharge nozzle 50 is injected in a conical shape toward the paper surface with respect to the discharge hole 51 by the centrifugal force generated while rotating together with the cutter blade 3. [

In addition, the inclination formed by the discharge hole 51, that is, the direction perpendicular to the paper surface, or the extent to which the chemical liquid is injected is adjusted in accordance with the degree formed in the oblique direction or the horizontal direction.

In addition, the size of the particles of the chemical liquid injected onto the paper surface is controlled according to the diameter of the discharge hole 51.

As shown in FIGS. 7 to 8, it is preferable that the present invention further includes a control means 41 for controlling the discharge of each chemical solution reservoir, which is connected to a supply pipe by a plurality of chemical solution reservoirs.

The chemical solution reservoirs 20a and 20b are connected to the supply pipe 30 through the connection pipes 31a and 31b and the connection pipes 31a and 31b (41a, 41b) for opening / closing the chemical solution reservoir (20a, 20b), whereby the chemical solution containing different components is received in each of the chemical solution reservoirs (20a, 20b) independently and the user operates the adjustment means It is possible to mix them into the supply pipe 30.

Therefore, the user is able to avoid the waste of the chemical liquid and to handle the chemical liquid efficiently by allowing the user to separate from the conventional method of mixing and injecting various kinds of chemical liquids, and to mix the chemical liquids at a predetermined ratio only while being stored separately.

In addition, the connection pipes 31a and 31b of the chemical solution reservoir are additionally provided with a cleaning pipe branched and discharged to the outside and a cleaning valve for opening and closing the cleaning pipe. After the application of the chemical solution, So that it can be easily discharged.

Therefore, water is supplied to the supply pipe 30 by washing the chemical solution reservoir by adjusting the wash valve, or by opening and closing the connection pipe through the adjustment means by receiving water in any one of the plurality of chemical solution reservoirs 20a, 20b So that it can be cleaned.

The opening and closing means 40, the adjusting means 41 and the washing valve may be constituted by valves for adjusting the flow of the chemical liquid or changing the direction of the chemical liquid by opening and closing the supply pipe 30, the connecting pipe 31 and the washing pipe, respectively .

As shown in FIGS. 3 and 9 to 10, according to the present invention, a protective cover 60 is disposed on the bottom surface of the cutter blade and protrudes downward to surround the discharge nozzle and is integrally fastened to the drive shaft. A hollow portion 61 is provided on the inner side of the protective cover and an air inlet 62 is formed on the side surface of the protective cover to allow the air to flow into the hollow portion while the air outlet 63 for discharging the intake air is formed on the bottom surface, The cover is integrally rotated with the drive shaft, and the air sucked by the exhaust port is discharged downward, thereby limiting the range in which the chemical liquid ejected through the ejection nozzle is ejected.

The protective cover 60 is provided with a disk-like contact piece which surrounds the discharge nozzle 50 on the bottom surface of the cutter blade 3 and protrudes downward and is fastened to the drive shaft 10, And a donut-shaped cup portion coupled to the bottom of the piece and having an open upper portion is coupled with the hollow portion 61 therein.

A suction port 62 is formed on the side surface of the protective cover 60, that is, on the outer circumferential surface of the cup portion to allow air to flow into the hollow portion 61 while rotating. The suction port is formed in the outer side And a guide plate for guiding the air to the hollow portion according to the rotation direction of the protective cover 60 is provided.

An exhaust port 63 for exhausting the air sucked by the bell 61 is formed on the bottom surface of the protective cover 60, that is, the bottom surface of the cup portion.

Accordingly, the protective cover 60 is coupled to the bottom surface of the cutter blade 3 at the end of the drive shaft 10 and rotates together with the cutter blade. The protective cover 60 sucks air laterally while discharging air in a downward direction The air discharged through the exhaust port 63 forms a cylindrical air curtain around the drive shaft 10 and the air discharged through the exhaust port 63 is discharged from the exhaust port 63. [ The air curtain is formed in the shape of a conical barrel whose diameter gradually increases toward the lower side due to the difference in speed and pressure.

That is, as the cutter blade 3 rotates, the chemical liquid is ejected from the ejection nozzle 50. The protective cover 60 covers the periphery of the ejection nozzle 50 and forms an air curtain with a conical tube shape at the bottom, By limiting the range in which the chemical liquid injected through the nozzle 50 is injected, the chemical liquid can be injected only in a desired range.

As described above, according to the present invention, in the lawn mower which receives the rotational force generated from the power generating unit 1 and rotates the cutter blade 3 coupled to the driving shaft 10 provided at the end of the working rod 2, A chemical liquid reservoir 20 in which a liquid chemical liquid is stored, a supply pipe 30 connecting the chemical liquid reservoir and a drive shaft of the drive shaft, and opening / closing means for opening / closing the supply pipe And a discharge nozzle (50) coupled to the lower end of the duct to protrude from the bottom surface of the cutter blade. The chemical solution contained in the chemical solution reservoir is supplied to the channel through the supply pipe, The spray nozzle is rotated with the cutter blade so that the chemical solution is sprayed toward the ground by the centrifugal force. The present invention is not limited to the above-described embodiment, The modification by those skilled in the art are possible within the scope of not impairing the spirit of the invention. FIG. Accordingly, the scope of claim of the present invention is not limited within the scope of the detailed description, but will be defined by the following claims and technical ideas thereof.

100: lawn mower with spraying device
1: Power generating part 2: Working rod
3: Cutter blade 10: Drive shaft
11: pipeline 12: input flow path
13: insertion groove 20: lacquer storage tank
30: supply pipe 40: opening / closing means
41: adjusting means 50: dispensing nozzle
60: protective cover 5: gear box

Claims (4)

A grass cutter for rotating a cutter blade (3) coupled to a drive shaft (10) provided at an end of a work rod (2) by receiving a rotational force generated from a power generating portion (1)
A chemical liquid reservoir 20 for storing a liquid chemical liquid and a supply pipe 30 connecting the chemical liquid reservoir and the drive shaft of the drive shaft, A spraying device including an opening and closing means 40 and an ejection nozzle 50 coupled to a lower side end of the duct to protrude from a bottom surface of the cutter blade,
Wherein the chemical solution contained in the chemical solution reservoir is supplied to the channel through the supply pipe and the chemical solution is injected toward the ground by the centrifugal force while the discharge nozzle provided at the lower part of the channel rotates together with the cutter blade.
The apparatus according to claim 1, wherein the discharge nozzle (50) is open at its upper portion and coupled to the lower end of the drive shaft, and has a discharge hole (51) communicating with the inside at its side surface, Wherein the spraying range of the spraying device is adjusted.
2. The lawn mower as claimed in claim 1, further comprising a control means (41) for controlling the discharge of each chemical solution reservoir, the plurality of chemical solution reservoirs being connected to the supply pipe.
[6] The apparatus according to claim 1, wherein the cutter blade has a protective cover (60) which surrounds the periphery of the discharge nozzle and protrudes downward and is integrally fastened to the drive shaft, wherein a hollow portion And an air inlet 62 for introducing air into the hollow portion while rotating is formed on the side surface, and an exhaust port 63 for exhausting the intake air is formed on the bottom surface,
Wherein the protective cover rotates integrally with the drive shaft to discharge the air sucked by the exhaust port to the lower portion to thereby limit a range in which the chemical liquid ejected through the ejection nozzle is ejected.

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