KR100609464B1 - Mower for Portable Power Devices - Google Patents

Abstract

The present invention relates to a lawn mower for use in a portable power device, a gear case with a bevel gear that is engaged with the rotating shaft to transmit the rotational force, the lower body of the gear case is seated and fixed, the upper body formed with a through hole in the center, A bevel gear that is engaged with the bevel gear of the gear case is formed on the top and the drive shaft is formed in the lower drive, the cam gear is formed with a step between the first cam and the second cam eccentrically engaged with the drive gear, the lower cam, the cam The first cam block located on the rotation line of the first cam of the gear is attached to the upper portion, a through hole is formed in the center and a plurality of saw blades are formed on the front surface, the upper cutter is coupled to the left and right reciprocating cross and the lower surface The second cam block is attached to the through hole is formed in the center and the front surface of the lower cutter, a plurality of saw blades are formed, coupled with the upper body A lower body, a seating bracket having insertion holes formed on both sides of the lower body, a connecting rod freely rotatably inserted into an insertion hole of the seating bracket, and wheels coupled to both ends of the connecting rod, and being attached and detached to a portable power device. It is possible to minimize the risk of work through the upper and lower cutters cross reciprocating to safely carry out mowing, landscape management and gardening work.

Portable Power Drive, Mower, Cam Gear, Upper Cutter, Lower Cutter

Description

Lawn Mowers for Portable Power Units {Mower for Portable Power Devices}

1 is an exploded perspective view of a lawn mower according to the present invention;

2 is a perspective view of the lawn mowing according to the present invention,

3 is a front view of a cam gear which is a main part of the present invention;

4 is a plan view of the upper cutter, which is the main part of the present invention;

5 is a plan view of the lower cutter, which is the main part of the present invention;

6 is a plan view of the lower body which is the main part of the present invention;

7 is a power transmission diagram schematically showing a power transmission process according to the present invention,

8 is a side view showing a state in which the lawnmower according to the present invention is mounted on a portable power device.

-Explanation of symbols for the main parts of the drawings-

10: gear case 11,31: bevel gear

20: upper body 21: through hole

30: drive shaft 32: drive gear

40: cam gear 41: the first cam

42: second cam 50: upper cutter

51: 1st cam block 52,62: saw blade

53,63: through hole 54,64: guide groove

55: fastening hole 60: lower cutter

61: second cam block 65: fastening hole

70: lower body 71: insertion hole

80: mounting bracket 81: insertion hole

90: connecting rod 100: wheel

110, 111, 112, 113, 114: fastening member 120: guide member

130: anti-friction plate 140: tension member

150: bracket

The present invention relates to a lawnmower which is a kind of work machine attached to a portable power machine, and in particular, the upper and lower cutters are reciprocated in the left and right directions by the cam gear to cut the grass while improving work safety. The present invention relates to a lawnmower of a portable power device that can be attached and detached at a low cost to improve the utilization of the portable power device.

In general, a portable power device (for example, a power harvester) used for weeding or simple battery work, the user easily attaches the main body including the engine to generate power to conveniently use the work space without restriction. Its use is gradually expanding.

Such portable power equipment is generally composed of a main body including an engine, a rotating shaft for power transmission, and a work machine connected to the rotating shaft, and various work machines have recently been developed to suit various working conditions.

On the other hand, the professional lawn mower developed for trimming the grass is quite expensive, and is used on flat or wide areas because it is difficult to work in corners such as near fences or under trees during private gardening or general mowing. It is difficult for the general user to operate, so only a professional or a long time user is working, and in the case of manual lawn mower, the worker must mow the lawn by manpower directly, thereby reducing work efficiency and causing waste of manpower.

In addition, when cutting the grass using a non-professional working machine such as a conventional power mower, since the cutting part rotates at a high speed, safety accidents are frequently generated due to debris or hard stone, which causes problems in working safety. There was also a problem that was difficult to mow at height.

Accordingly, the present invention has been made to solve the above problems, it is possible to detachable and attachable to portable power equipment, minimizing work hazards through the upper and lower cutters reciprocating crosses, mowing to a constant height, landscaping Its purpose is to provide a lawn mower for use in portable power equipment that can safely perform management, gardening, and the like.

In the present invention for achieving the above object, in the portable power device consisting of a work machine is connected to the rotating shaft, the power generated in the engine is transmitted to the rotating shaft, the bevel gear is to be coupled to the rotating shaft to transmit the rotating force Gear case, a lower portion of the gear case is seated and fixed, an upper body having a through hole formed in the center, a bevel gear meshing with a bevel gear of the gear case is formed on the upper side, and a drive shaft having the driving gear on the lower side, the drive gear And a cam gear formed with a stepped eccentric first cam and a second cam at a lower portion thereof, a first cam block positioned on a rotation line of the first cam of the cam gear, and a through hole formed at the center thereof. An upper cutter having a plurality of saw blades formed on the front surface thereof, coupled to the upper cutter so as to reciprocate left and right, and a second cam block attached to the lower surface thereof. A through hole is formed in the center and a lower cutter having a plurality of saw blades formed on the front surface thereof, a lower body coupled to the upper body, a mounting bracket having insertion holes formed at both sides of the lower body, and freely rotatable in the insertion hole of the mounting bracket. Connecting rod is inserted, characterized in that made of a wheel coupled to both ends of the connecting rod.

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

1 is an exploded perspective view of a lawnmower according to the present invention, Figure 2 is a perspective view of the combined mowing according to the present invention, Figure 3 is a front view of a cam gear that is the main part of the present invention, Figure 4 is a main part of the present invention 5 is a plan view of a lower cutter which is a main part of the present invention, FIG. 6 is a plan view of a lower body which is a main part of the present invention, and FIG. 7 is a power diagram schematically illustrating a power transmission process according to the present invention. 8 is a side view illustrating a state in which a lawnmower according to the present invention is mounted on a portable power device.

In the present invention, the power generated in the engine 210 is transmitted to the rotary shaft 220, in the portable power device consisting of a working machine connected to the rotary shaft 220,

The gear case 10 in which the bevel gear 11, which is engaged with the rotation shaft 220 and transmits the rotational force, is installed, and the lower portion of the gear case 10 is seated and fixed by the fastening member 110, and a through hole in the center thereof. A drive shaft 30 having an upper body 20 having a 21 formed thereon, a bevel gear 31 meshing with the bevel gear 11 of the gear case 10, and a driving gear 32 formed at a lower portion thereof. The cam gear 40 which is engaged with the drive gear 32 and eccentrically formed in the lower portion of the first cam 41 and the second cam 42 at a step, the first cam 41 of the cam gear 40 The first cam block 51 positioned on the rotation line is attached to the upper portion, the through hole 53 is formed at the center, and the upper cutter 50 having the plurality of saw blades 52 formed at the front thereof, the upper cutter 50 and It is coupled to the left and right reciprocating cross through the fastening members 111 and 112, the second cam block 61 is attached to the lower surface and the through hole 63 is formed in the center and the front surface The lower cutter (60) is formed with a plurality of saw blades 62, the lower body 70 is coupled via the upper body 20 and the fastening member 113, the lower body 70 and the fastening member 114 The connecting rod 90 is coupled to the medium and the insertion bracket 81 is formed on both sides, the connecting rod 90 is rotatably inserted into the insertion hole 81 of the mounting bracket 80, the connecting rod 90 It is made of a wheel 100 coupled to both ends.

Here, the guide grooves 54 and 64 formed long in the left and right directions at the rear sides of the upper cutter 50 and the lower cutter 60 are formed, respectively, and the guide member 120 is inserted into the insertion hole 71 of the lower body 70. ) Is inserted into the lower portion, and the upper portion of the guide member 120 is inserted into the guide grooves 54 and 64 of the upper cutter 50 and the lower cutter 60, thereby improving the circular motion of the cam gear 40. It is configured to convert the left and right reciprocating motion of the cutter 50 and the lower cutter 60.

In addition, the anti-friction plate 130 is inserted into the upper portion of the upper cutter 50 and the lower portion of the lower cutter 60, respectively, to absorb friction generated while the upper and lower cutters 50 and 60 are reciprocated. Can be configured to do this.

In addition, a plurality of tension members 140, such as tension washers, may be provided between the upper body 20 and the lower body 70 to secure an operation clearance between the members, and the lower cutter 60 The bottom of the bracket is attached to the bracket 150, the upper cutter 50 and the upper cutter by the fastening members (111, 112) through the fastening holes (55, 65) of the lower cutter (60) and the bracket 150 By allowing the 50 and the lower cutter 60 to be coupled, the left and right reciprocating motions of the upper cutter 50 and the lower cutter 60 can be induced more reliably. Here, the fastening members (110, 111, 112, 113, 114) is usually made of a bolt and nut.

Hereinafter, the operation of the present invention will be described in detail.

According to the present invention, as shown in Figures 7 to 8, the power generated in the engine 210 of the portable power unit is transmitted to the bevel gear 11 of the gear case 10 through the rotating shaft 220, The rotating force is transmitted to the bevel gear 31 of the drive shaft 30 engaged with the bevel gear 11 so that the drive shaft 30 rotates, and the cam gear engaged with the drive gear 32 by the rotation of the drive shaft 30. 40 is rotated in conjunction.

Accordingly, the first cam 41 of the cam gear 40 comes into contact with the first cam block 51 attached to the upper cutter 50, and the second cam 42 of the cam gear 40. Is rotated while abutting the second cam block 61 attached to the lower cutter 60, in this process the guide member 120 fixed to the insertion hole 71 of the lower body 70 is the upper Since it moves along the guide grooves 54 and 64 of the cutter 50 and the lower cutter 60, the upper cutter 50 and the lower cutter 60 are left and right reciprocated without rotation.

In addition, as shown in FIGS. 4 to 5, the fastening members 111 and 112 are fastened to the fastening holes 55 and 65 formed in the upper cutter 50 and the lower cutter 60 by the bracket 150. The reciprocating motion of the cutter 50 and the lower cutter 60 can be induced more reliably.

On the other hand, by inserting the anti-friction plate 130 on the upper and lower cutter 60, the upper cutter 50, respectively, the upper body 20 according to the left and right reciprocating motion of the upper cutter 50 and the lower cutter 60 And direct friction with the lower body 70 can be prevented.

Accordingly, the grass or the grass can be safely mowed by the saw blades 52 and 62 of the upper cutter 50 and the lower cutter 60 which are left and right reciprocating cross-movement.

In addition, since the worker proceeds while supporting the wheel 100 of the lawn mower in the process of mowing the grass or lawn, the inconvenience of having to lift the work machine to a certain height like a conventional portable mowing machine is eliminated, as well as a certain height. You can mow the grass or lawn.

As described above, according to the present invention, it is possible to attach and detach the portable power device, and to minimize the risk of work through the upper and lower cutters reciprocating cross, to secure the mowing, landscaping management, gardening work, etc. to a certain height. There is an effect that can be performed.

Claims (6)

In the present invention, the power generated in the engine 210 is transmitted to the rotary shaft 220, in the portable power device consisting of a working machine connected to the rotary shaft 220, Gear case 10 in which the bevel gear 11 is installed to be engaged with the rotating shaft 220 to transmit the rotational force, the lower body of the gear case 10 is seated and fixed, and an upper body having a through hole 21 formed in the center thereof. 20, a bevel gear 31 meshing with the bevel gear 11 of the gear case 10 is formed at an upper portion thereof, and a drive shaft 30 having a drive gear 32 formed thereon, and the drive gear 32. The first cam 41 and the second cam 42, which are engaged with each other and are eccentric, are positioned on a rotation line of the cam gear 40 and the first cam 41 of the cam gear 40. Cam block 51 is attached to the upper portion, the through-hole 53 is formed in the center and the upper cutter 50, a plurality of saw blades 52 formed on the front side is coupled to the left and right reciprocating cross with the upper cutter 50 The lower cam 60, the second cam block 61 is attached to the lower surface and a through hole 63 is formed in the center and a plurality of saw blades 62 are formed on the front surface. Lower body 70 coupled to the sub-body 20, the mounting bracket 80, the insertion hole 81 is formed on both sides of the lower body 70, free to the insertion hole 81 of the mounting bracket 80 The connecting rod 90 is rotatably inserted, the lawn mower used in a portable power device, characterized in that consisting of a wheel (100) coupled to both ends of the connecting rod (90). The lawn mower according to claim 1, wherein guide grooves (54, 64) are formed on the rear sides of the upper cutter (50) and the lower cutter (60), respectively. The method according to claim 1 or 2, The lower portion of the guide member 120 is inserted into the insertion hole 71 of the lower body 70, the upper portion of the guide member 120 is the guide groove 54 of the upper cutter 50 and the lower cutter 60, 64 is inserted into the lawn mower used for portable power equipment, characterized in that the circular motion of the cam gear 40 is converted to the left and right reciprocating motion of the upper cutter (50) and the lower cutter (60). The method of claim 1, Lawn mower for use in portable power equipment, characterized in that the friction preventing plate 130 is inserted into the upper and lower portions of the upper cutter 50 and the lower cutter 60, respectively. The method of claim 1, Lawn mower used in a portable power device, characterized in that a plurality of tension members 140 are provided between the upper body 20 and the lower body 70. The method of claim 1, A bracket 150 is attached to a lower portion of the lower cutter 60, and fastening holes 55 and 65 of the upper cutter 50 and the lower cutter 60 and fastening members 111 and 112 penetrating the bracket 150. Lawn mower used in portable power equipment, characterized in that the upper cutter 50 and the lower cutter (60) by the combination.

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