WO2006041241A1 - Air spray device installed in the back of riding mower - Google Patents

Air spray device installed in the back of riding mower Download PDF

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Publication number
WO2006041241A1
WO2006041241A1 PCT/KR2005/000502 KR2005000502W WO2006041241A1 WO 2006041241 A1 WO2006041241 A1 WO 2006041241A1 KR 2005000502 W KR2005000502 W KR 2005000502W WO 2006041241 A1 WO2006041241 A1 WO 2006041241A1
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WO
WIPO (PCT)
Prior art keywords
air
blast fan
engine
air blast
user
Prior art date
Application number
PCT/KR2005/000502
Other languages
French (fr)
Inventor
Hyunhwa Kim
Original Assignee
Hyunhwa Kim
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hyunhwa Kim filed Critical Hyunhwa Kim
Publication of WO2006041241A1 publication Critical patent/WO2006041241A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/835—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes
    • A01D34/90—Mowers; Mowing apparatus of harvesters specially adapted for particular purposes for carrying by the operator
    • A01D34/902—Ergonomic provisions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V33/00—Structural combinations of lighting devices with other articles, not otherwise provided for
    • F21V33/0088—Ventilating systems
    • F21V33/0096—Fans, e.g. ceiling fans

Definitions

  • the present invention relates to an air jet device installed on a back of a lawn mower for jetting air to the back of the lawn mower so that a user can use the lawn mower in a cool and pleasant condition in the summer, and more particularly to an air jet device for a back of a lawn mower, in which air jet holes for jetting air are formed through the front surface of the back contacting a user's back, an air blast fan rotated by the driving power generated from an engine is installed so that the air generated from the air blast fan is jetted through the air jet holes and the amount of the jetted air is controlled as occasion demands, and a thermo-element is installed at a position to which the air is supplied so that the air cooled by the thermo-element is supplied, thereby allowing the user to conveniently use the lawn mower in the summer.
  • a lawn mower in which a blade is rotated by driving an engine so as to more conveniently and efficiently mow grass, has been developed.
  • the conventional lawn mower serves only to mow grass, but does not consider the convenience of users. Since the lawn mower is mainly used in the summer when grass grows rapidly, the users of the lawn mower are easily exhausted due to solar heat, the heat caused by climate, and/or the heat generated from the engine, and have prickly heat on their backs, and thus the efficiency in operation is deteriorated.
  • the present invention has been made in view of the above problems, and it is an object of the present invention to provide an air jet device for a back of a lawn mower, in which air jet holes for jetting air are formed through the front surface of the back contacting a user's back, an air blast fan rotated by the driving power generated from an engine is installed so that the air is supplied to the back by driving the air blast fan, and as occasion demands, a thermo-element is installed so that the air cooled by the thermo-element is supplied, thereby allowing a user to conveniently use the lawn mower in a cool and pleasant condition in the summer, thus protecting the user's health and improving efficiency in operating the lawn mower.
  • an air jet device for a back of a lawn mower comprising: a frame provided with a shoulder strap for allowing a user to carry the lawn mower on his/her back; an engine movably installed on the frame; an operating rod including a power transmission wire connected to a rotary shaft of the engine, an acceleration lever, and a hand grip; a blade rotatably installed at the end of the operating rod and connected to the rotary shaft of the engine by a transmission wire; and the back attached to the frame, wherein a plurality of air jet holes are formed through the front surface of the back for jetting air to the user's back contacting the back of the lawn mower and an air blast fan driven by the driving force of the engine is installed so that air generated by driving the air blast fan is jetted to the air jet holes of the back.
  • FIG. 1 is an exemplary perspective view of a lawn mower in accordance with the present invention
  • FIG. 2 is a perspective view of the lawn mower of the present invention in a used state
  • FIG. 3 is a perspective view of a back of the lawn mower of the present invention
  • FIG. 4 is a sectional view illustrating the back of the lawn mower of the present invention in a state in which an air blast fan is directly installed on the back;
  • FIG. 5 is a sectional view illustrating a cooling unit of an air jet device for the back of the lawn mower of the present invention
  • FIG. 6 is a sectional view illustrating an air blast fan for driving a motor of the air jet device of the present invention
  • FIG. 7 is a sectional view illustrating a power transmission structure by a transmission wire of the air jet device of the present invention
  • FIG. 8 is a sectional view illustrating an air control unit of the air jet device of the present invention.
  • FIG. 9 is a sectional view illustrating a light installed on the air jet device of the present invention.
  • a lawn mower 100 comprises a frame 1 provided with a shoulder strap 2 for allowing a user to carry the lawn mower 100 on his/her back, an engine 3 movably installed on the frame 1 , an operating rod 4 including a power transmission wire 6 connected to a rotary shaft of the engine 3, an acceleration lever
  • a blade 5 rotatably installed at the end of the operating rod 4 and connected to the rotary shaft of the engine 3 by a transmission wire, and a back 10 attached to the frame 1 so that the user's back contacts the back 10 when the user carries the lawn mower 100 on his/her back.
  • the back 10 is configured such that air is jetted from the rear surface of the back 10 to the front surface of the back 10 through the air jet holes 13, and is communicated with the air blast fan 20 installed on the frame 1 by an air duct 15.
  • FIG. 1 Alternately, as shown in FIG.
  • the back 10 is configured such that air distribution grooves 12 including an air supply channel 11 are formed therein and a plurality of the air jet holes 13 are formed through the front surface of the back 10 contacting the user's back.
  • an air inlet 14 communicating with the air supply channel 11 is formed through ends of the air distribution grooves 12, and the air blast fan 20 is directly installed at the air inlet 14.
  • thermo-element 40 is installed in the air inlet 14 or the air duct 15 so that a cooling grill 41 of the thermo-element 40 cools air transmitted from the air blast fan 20 to the back 10, thereby causing the cooled air to be supplied to the user's back.
  • the cooling grill 41 of the thermo-element 40 is installed in the air duct 15 or the air inlet 14, and the thermo-element 40 is operated by power generated from the engine 3 or power obtained from a power generator 50, which is separately installed.
  • the air blast fan 20 is driven by directly transmitting the driving force of the engine 3 to the air blat fan 20 through a transmission gear 30 having a transmission wire 31.
  • a motor 21 is installed on the air blast fan 20 so that the air blast fan 20 connected to the motor is driven by power generated from the engine 3, or the air blast fan 20 is driven by power generated from the power generator 50 attached to the engine 3. That is, a method for driving the air blast fan 20 is not limited.
  • the air blast fan 20 is driven by the driving force of the engine 3 through the transmission gear 30 having the transmission wire 31.
  • the operating rod 4 including the power transmission wire 6 installed therein for transmitting the driving force of the engine 3 to the blade 5 is connected to the engine 3.
  • a connection shaft 32 is installed at a position in which the rotary shaft of the engine 3 and the power transmission wire 6 are connected such that one end of the connection shaft 32 is connected to a shaft of the motor and the other end of the connection shaft 32 is connected to the power transmission wire 6, a driving bevel gear 33 is installed at the connection shaft 32, and a driven bevel gear 34 is installed such that the driven bevel gear 34 is engaged with the driving bevel gear 33.
  • the transmission wire 31 is integrally connected to the driven bevel gear 34 so that the driven bevel gear 34 is connected to the air blast fan 20, thereby allowing the air blast fan 20 to be driven by the driving force of the engine 3.
  • An air control unit 60 for controlling the amount of air, which is transmitted from the air blast fan 20 and jets through the air jet holes 13 of the back 10, is installed in one selected from an air blast fan housing, the air duct 15, and the back 10.
  • the air control unit 60 controls the amount of air, by various methods, such as a method for partially closing or opening an air suction hole of the blast fan housing, a method for partially discharging the air transmitted from the air blast fan 20 by opening and closing an air discharge hole formed through the air duct 15, and a method for partially discharging air from the back 10 or partially closing the air jet holes 13 of the back 10.
  • the most preferable method is a method for opening and closing the air discharge hole formed through the air duct 15 as shown in FIG. 8.
  • a light 70 is turned on by power generated from the power generator 50, thereby assisting the user to work at night.
  • the driving force generated from the engine 3 is transmitted to the blade 5 installed at the end of the operating rod 4 by the power transmission wire 6 so that the blade 5 is rotated and the air blast fan 20 is simultaneously driven. Then, when the air blast fan 20 forcibly transfers external air to the back 10, the air is jetted through the air jet holes 13 formed through the front surface of the back 10 contacting the user's back.
  • the air jet holes 13 do not directly contact the user's back, and thus the jetted air is not block by the user's back but is uniformly spread throughout the user's back along the air distribution grooves 12.
  • the air generated from the air blast fan 20 is jetted to the air jet holes 13 formed through the back 10 through the air duct 15 or the air inlet 14.
  • the air control unit 60 installed in one selected from the air blast fan housing, the air duct 15, and the back 10 so that the amount of air transmitted from the air blast fan 20 and jetted through the air jet holes 13 of the back 10 is adjusted, the air in an amount proper to the user's taste is jetted to the user's back.
  • thermo-element 40 when the cooling grill 41 of the thermo-element 40 is installed in the air duct 15 or the air inlet 14, the thermo-element 40 is operated by power generated from the power generator 50 to cool air entered into the air inlet 14, thereby supplying the cool air to the user's back.
  • an energy source for operating the thermo- element 40 uses power generated from the engine 3, or power generated from the separate power generator 50.
  • the light 70 is turned on by the power of the power generator 50, thus assisting the user to work at night.
  • the present invention provides an air jet device for a back of a lawn mower, in which air jet holes for jetting air generated from an air blast fan are formed through the front surface of the back contacting a user's back so that a user can use the lawn mower in a cool and pleasant condition in the summer, and as occasion demands, a thermo-element is installed so that the air cooled by the thermo-element is supplied, and the amount of the air jetted through the air jet holes is controlled, thereby achieving more comfortable operating environments, thus protecting the user's health.
  • the air jet device of the present invention turns a light on using a power generator so that the user can work at night, thereby improving efficiency in operating the lawn mower.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Harvester Elements (AREA)

Abstract

An air jet device for a back of a lawn mower, in which air is supplied and jetted from the back so that a user can use the lawn mower in a cool and pleasant condition in the summer. An air supply channel is formed in the back, and air distribution grooves including a plurality of air jet holes communicating with the air supply channel are formed in the front surface of the back contacting the users back, an air inlet communicates with the air supply channel in the back, an air blast fan for forcibly transmitting air is installed in the air inlet, and as occasion demands, a thermo-element is installed so that the air cooled by the thermo-element is supplied to the back, thereby allowing the user to conveniently use the lawn mower in a cool and pleasant condition in the summer, thus protecting the user's health and improving efficiency in operating the lawn mower.

Description

AIR SPRAY DEVICE INSTALLED IN THE BACK OF RIDING MOWER
TECHNICAL FIELD
The present invention relates to an air jet device installed on a back of a lawn mower for jetting air to the back of the lawn mower so that a user can use the lawn mower in a cool and pleasant condition in the summer, and more particularly to an air jet device for a back of a lawn mower, in which air jet holes for jetting air are formed through the front surface of the back contacting a user's back, an air blast fan rotated by the driving power generated from an engine is installed so that the air generated from the air blast fan is jetted through the air jet holes and the amount of the jetted air is controlled as occasion demands, and a thermo-element is installed at a position to which the air is supplied so that the air cooled by the thermo-element is supplied, thereby allowing the user to conveniently use the lawn mower in the summer.
BACKGROUNDART
As industries and human civilization have developed, human life has become more prosperous and human pursues more pleasant living conditions. Accordingly, in order to live in more comfortable conditions, humans have developed more convenient tools essentially used in life.
In order to meet the above requirements, instead of a sickle for mowing grass in a rural community, a lawn mower, in which a blade is rotated by driving an engine so as to more conveniently and efficiently mow grass, has been developed.
The conventional lawn mower serves only to mow grass, but does not consider the convenience of users. Since the lawn mower is mainly used in the summer when grass grows rapidly, the users of the lawn mower are easily exhausted due to solar heat, the heat caused by climate, and/or the heat generated from the engine, and have prickly heat on their backs, and thus the efficiency in operation is deteriorated.
DISCLOSURE OF THE INVENTION
Therefore, the present invention has been made in view of the above problems, and it is an object of the present invention to provide an air jet device for a back of a lawn mower, in which air jet holes for jetting air are formed through the front surface of the back contacting a user's back, an air blast fan rotated by the driving power generated from an engine is installed so that the air is supplied to the back by driving the air blast fan, and as occasion demands, a thermo-element is installed so that the air cooled by the thermo-element is supplied, thereby allowing a user to conveniently use the lawn mower in a cool and pleasant condition in the summer, thus protecting the user's health and improving efficiency in operating the lawn mower.
In accordance with the present invention, the above and other objects can be accomplished by the provision of an air jet device for a back of a lawn mower comprising: a frame provided with a shoulder strap for allowing a user to carry the lawn mower on his/her back; an engine movably installed on the frame; an operating rod including a power transmission wire connected to a rotary shaft of the engine, an acceleration lever, and a hand grip; a blade rotatably installed at the end of the operating rod and connected to the rotary shaft of the engine by a transmission wire; and the back attached to the frame, wherein a plurality of air jet holes are formed through the front surface of the back for jetting air to the user's back contacting the back of the lawn mower and an air blast fan driven by the driving force of the engine is installed so that air generated by driving the air blast fan is jetted to the air jet holes of the back.
BRIEF DESCRIPTION OF THE DRAWINGS
The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is an exemplary perspective view of a lawn mower in accordance with the present invention;
FIG. 2 is a perspective view of the lawn mower of the present invention in a used state; FIG. 3 is a perspective view of a back of the lawn mower of the present invention;
FIG. 4 is a sectional view illustrating the back of the lawn mower of the present invention in a state in which an air blast fan is directly installed on the back;
FIG. 5 is a sectional view illustrating a cooling unit of an air jet device for the back of the lawn mower of the present invention;
FIG. 6 is a sectional view illustrating an air blast fan for driving a motor of the air jet device of the present invention;
FIG. 7 is a sectional view illustrating a power transmission structure by a transmission wire of the air jet device of the present invention; FIG. 8 is a sectional view illustrating an air control unit of the air jet device of the present invention; and
FIG. 9 is a sectional view illustrating a light installed on the air jet device of the present invention.
BEST MODE FOR CARRYING OUT THE INVENTION Now, a preferred embodiment of the present invention will be described in detail with reference to the annexed drawings.
As shown in FIG. 1 , a lawn mower 100 comprises a frame 1 provided with a shoulder strap 2 for allowing a user to carry the lawn mower 100 on his/her back, an engine 3 movably installed on the frame 1 , an operating rod 4 including a power transmission wire 6 connected to a rotary shaft of the engine 3, an acceleration lever
7, and a hand grip, a blade 5 rotatably installed at the end of the operating rod 4 and connected to the rotary shaft of the engine 3 by a transmission wire, and a back 10 attached to the frame 1 so that the user's back contacts the back 10 when the user carries the lawn mower 100 on his/her back.
As shown in FIG. 2, a plurality of air jet holes 13, which are extended longitudinally for jetting air, are formed through the front surface of the back 10 contacting the user's back, and an air blast fan 20 driven by the driving force of the engine 3 for supplying air to the back 10 is installed on the frame 1. Here, as shown in FIG. 3, the back 10 is configured such that air is jetted from the rear surface of the back 10 to the front surface of the back 10 through the air jet holes 13, and is communicated with the air blast fan 20 installed on the frame 1 by an air duct 15. Alternately, as shown in FIG. 4, the back 10 is configured such that air distribution grooves 12 including an air supply channel 11 are formed therein and a plurality of the air jet holes 13 are formed through the front surface of the back 10 contacting the user's back. Here, an air inlet 14 communicating with the air supply channel 11 is formed through ends of the air distribution grooves 12, and the air blast fan 20 is directly installed at the air inlet 14.
As occasion demands, as shown in FIG. 5, a thermo-element 40 is installed in the air inlet 14 or the air duct 15 so that a cooling grill 41 of the thermo-element 40 cools air transmitted from the air blast fan 20 to the back 10, thereby causing the cooled air to be supplied to the user's back. For the reason, the cooling grill 41 of the thermo-element 40 is installed in the air duct 15 or the air inlet 14, and the thermo-element 40 is operated by power generated from the engine 3 or power obtained from a power generator 50, which is separately installed.
As shown in FIG. 3, the air blast fan 20 is driven by directly transmitting the driving force of the engine 3 to the air blat fan 20 through a transmission gear 30 having a transmission wire 31. Alternately, as shown in FIG. 6, a motor 21 is installed on the air blast fan 20 so that the air blast fan 20 connected to the motor is driven by power generated from the engine 3, or the air blast fan 20 is driven by power generated from the power generator 50 attached to the engine 3. That is, a method for driving the air blast fan 20 is not limited.
Most preferably, the air blast fan 20 is driven by the driving force of the engine 3 through the transmission gear 30 having the transmission wire 31. More specifically, as shown in FIG. 7, the operating rod 4 including the power transmission wire 6 installed therein for transmitting the driving force of the engine 3 to the blade 5 is connected to the engine 3. Here, a connection shaft 32 is installed at a position in which the rotary shaft of the engine 3 and the power transmission wire 6 are connected such that one end of the connection shaft 32 is connected to a shaft of the motor and the other end of the connection shaft 32 is connected to the power transmission wire 6, a driving bevel gear 33 is installed at the connection shaft 32, and a driven bevel gear 34 is installed such that the driven bevel gear 34 is engaged with the driving bevel gear 33. The transmission wire 31 is integrally connected to the driven bevel gear 34 so that the driven bevel gear 34 is connected to the air blast fan 20, thereby allowing the air blast fan 20 to be driven by the driving force of the engine 3.
An air control unit 60 for controlling the amount of air, which is transmitted from the air blast fan 20 and jets through the air jet holes 13 of the back 10, is installed in one selected from an air blast fan housing, the air duct 15, and the back 10. The air control unit 60 controls the amount of air, by various methods, such as a method for partially closing or opening an air suction hole of the blast fan housing, a method for partially discharging the air transmitted from the air blast fan 20 by opening and closing an air discharge hole formed through the air duct 15, and a method for partially discharging air from the back 10 or partially closing the air jet holes 13 of the back 10. The most preferable method is a method for opening and closing the air discharge hole formed through the air duct 15 as shown in FIG. 8.
Further, as shown in FIG. 9, a light 70 is turned on by power generated from the power generator 50, thereby assisting the user to work at night.
Hereinafter, the operation of an air jet device for a back of a lawn mower in accordance with the present invention will be described in detail.
When a user starts the engine 3 to use the lawn mower 100, the driving force generated from the engine 3 is transmitted to the blade 5 installed at the end of the operating rod 4 by the power transmission wire 6 so that the blade 5 is rotated and the air blast fan 20 is simultaneously driven. Then, when the air blast fan 20 forcibly transfers external air to the back 10, the air is jetted through the air jet holes 13 formed through the front surface of the back 10 contacting the user's back.
When the air distribution grooves 12 having a longitudinally extended concave structure are formed in the front surface of the back 10 and the air jet holes 13 are formed at the ends of the air distribution grooves 12, the air jet holes 13 do not directly contact the user's back, and thus the jetted air is not block by the user's back but is uniformly spread throughout the user's back along the air distribution grooves 12.
There are several methods for transmitting the driving force of the engine 3 to the air blast fan 20 so as to drive the air blast fan 20. In a method for directly driving the air blast fan 20 using the transmission wire, the driving force of the engine 3 is transmitted to the air blast fan 20 through the transmission wire, thereby rotating the air blast fan 20. On the other hand, in a method for driving the air blast fan 20 using the motor, power generated from the engine 3 when the engine 3 is driven (for example, power for operating an ignition plug, or power generated from a separately- installed power generator) rotates the motor 21 formed integrally with the air blast fan 20.
As described above, the air generated from the air blast fan 20 is jetted to the air jet holes 13 formed through the back 10 through the air duct 15 or the air inlet 14. Here, by manipulating the air control unit 60 installed in one selected from the air blast fan housing, the air duct 15, and the back 10 so that the amount of air transmitted from the air blast fan 20 and jetted through the air jet holes 13 of the back 10 is adjusted, the air in an amount proper to the user's taste is jetted to the user's back.
Further, when the cooling grill 41 of the thermo-element 40 is installed in the air duct 15 or the air inlet 14, the thermo-element 40 is operated by power generated from the power generator 50 to cool air entered into the air inlet 14, thereby supplying the cool air to the user's back. Here, an energy source for operating the thermo- element 40 uses power generated from the engine 3, or power generated from the separate power generator 50.
When the sun sets during working using the lawn mower 100 of the present invention, the light 70 is turned on by the power of the power generator 50, thus assisting the user to work at night.
INDUSTRIAL APPLICABILITY
As apparent from the above description, the present invention provides an air jet device for a back of a lawn mower, in which air jet holes for jetting air generated from an air blast fan are formed through the front surface of the back contacting a user's back so that a user can use the lawn mower in a cool and pleasant condition in the summer, and as occasion demands, a thermo-element is installed so that the air cooled by the thermo-element is supplied, and the amount of the air jetted through the air jet holes is controlled, thereby achieving more comfortable operating environments, thus protecting the user's health. Further, the air jet device of the present invention turns a light on using a power generator so that the user can work at night, thereby improving efficiency in operating the lawn mower.
Although the preferred embodiment of the present invention has been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. An air jet device for a back of a lawn mower comprising: a frame provided with a shoulder strap for allowing a user to carry the lawn mower on his/her back; an engine movably installed on the frame; an operating rod including a power transmission wire connected to a rotary shaft of the engine, an acceleration lever, and a hand grip; a blade rotatably installed at the end of the operating rod and connected to the rotary shaft of the engine by a transmission wire; and the back attached to the frame, wherein a plurality of air jet holes are formed through the front surface of the back for jetting air to the user's back contacting the back of the lawn mower and an air blast fan driven by the driving force of the engine is installed so that air generated by driving the air blast fan isjetted to the airjet holes of the back.
2. The airjet device as set forth in claim 1, wherein an air supply channel is formed in the back and air distribution grooves including a plurality of the airjet holes are formed in the front surface of the back contacting the user's back, and an air inlet communicating with the air supply channel is formed at ends of the air distribution grooves such that the air blast fan is directly installed in the air inlet and is driven by the driving force of the engine.
3. The airjet device as set forth in claim 1 or 2, wherein a thermo-element is installed at a position between the air blast fan and the air jet holes so that the air cooled by the thermo-element is supplied.
4. The air jet device as set forth in claim 1 or 2, wherein an air control unit for controlling the amount of air transmitted from the air blast fan and jetted to the air jet holes of the back is installed in one selected from the group consisting of an air blast fan housing, an air duct, and the back.
5. The air jet device as set forth in claim 1 or 2, wherein the air blast fan is driven by the driving force of the engine transmitted through a transmission gear having a transmission wire.
6. The air jet device as set forth in claim 1 or 2, wherein a motor is installed on the air blast fan, and is driven by power generated by the driving force of the engine.
7. The air jet device as set forth in claim 3, wherein the thermo-element is operated by power generated from a power generator separately installed.
8. The air jet device as set forth in claim 5, wherein the transmission gear having the transmission wire includes: a connection shaft installed at a position, in which a rotary shaft of the engine and the power transmission wire are connected such that one end of the connection shaft is connected to a shaft of the motor and the other end of the connection shaft is connected to the power transmission wire, by connecting the operating rod, having the power transmission wire installed therein for transmitting the driving force of the engine to the blade, to the engine; a driving bevel gear installed at the connection shaft; and a driven bevel gear installed such that the driven bevel gear is engaged with the driving bevel gear, wherein the transmission wire is integrally connected to the driven bevel gear so that the driven bevel gear is connected to the air blast fan, thereby allowing the air blast fan to be driven by the driving force of the engine.
9. The air jet device as set forth in claim 4, wherein the air control unit is provided with an air discharge hole installed at a position of an air supply channel extended from the air blast fan to the air jet holes of the back, and opened and closed for discharging air generated from the air blast fan.
10. The air jet device as set forth in claim 1 or 2, wherein a light is turned on by power generated from the power generator to assist the user to work at night.
PCT/KR2005/000502 2004-10-12 2005-02-23 Air spray device installed in the back of riding mower WO2006041241A1 (en)

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KR200472301Y1 (en) 2012-06-18 2014-04-17 주식회사 홈앤가든 Wheel typed brush cutter which can be attached backpack frame
KR101408794B1 (en) 2012-11-19 2014-06-20 변정훈 Engine mounted a portable Farming Machinery flotation device
KR101656627B1 (en) * 2015-10-01 2016-09-09 김영원 Removing device
KR200487206Y1 (en) 2018-05-31 2018-08-21 장봉수 Backrest of lawn trimmer having holder for umbrella and blower fan
KR20240028800A (en) 2022-08-25 2024-03-05 유재영 lawn mower with blowing function

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