JP2006000111A - Cutter for grass mower - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutter having good working efficiency, by eliminating defects of cutters made of metal or of a nylon cord existing in the past. <P>SOLUTION: This cutter for a grass mower is structured so that an auxiliary cord board 12 having auxiliary nylon cords 14 which are protrusively arranged on suitable peripheral areas of the board 12 is mounted on an upper surface of a main cord board 1 having main nylon cords 3 which are arranged on suitable peripheral areas of the board 1 and drawn therefrom in suitable length. Further, the cutter is structured so that another auxiliary cord board differently structured and having auxiliary nylon cords which are protrusively arranged on suitable peripheral areas of the board is mounted on the upper surface of the main nylon cord board. Furthermore, the cutter is structured so that the auxiliary cord board having the auxiliary nylon cords which are protrusively arranged on the suitable peripheral areas of the board is mounted on an upper surface of a chip saw. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a cutter for a mower.

  Conventionally, two types of cutters for metal mowers, made of metal and nylon cord, have been widely used. Applicants have been using metal cutters for many years, but they are interested in nylon cord cutters in terms of cost and processing. I have been studying it.

  However, in the case of nylon cord, although it is safe on land with a lot of pebbles, there is a problem with sharpness and a lot of scattered matter is generated due to the fact that it is broken by the cord, and it is small in the whole body of the worker There was a defect that grass grains were scattered or tangled in the work basket.

  Although there are protective equipment worn by workers to prevent scattering, the cutter itself has not been radically improved, and it has not been possible to eliminate entanglement of the work rod.

  Further, in the case of a tip saw that is a metal cutter, even if the sharpness is good, it has been impossible to eliminate the disadvantages of scattering to the operator and tangling to the work rod.

  References in the technical field related to the present invention include the following.

Japanese Patent No. 3435129 JP 2000-83439 A Japanese Utility Model Publication No. 3-48427 Japanese Utility Model Publication No. 51-18220 Japanese Utility Model Publication No. 62-187534 No. 2-5715

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a cutter with good working efficiency by removing the above-mentioned drawbacks of conventional metal and nylon cord cutters.

  The present invention is provided with an auxiliary cord board in which an auxiliary nylon cord protrudes from an appropriate position on the upper surface of the main cord board that draws an appropriate length of the main nylon cord from an appropriate place on the peripheral surface.

  In addition, an auxiliary cord board having an auxiliary nylon cord projecting at an appropriate location around the upper surface of the main nylon cord board is provided.

  Furthermore, an auxiliary cord board is provided on the upper surface of the tip saw with an auxiliary nylon cord protruding in a suitable place around the tip saw.

  Further, an auxiliary nylon cord protrudes from the upper surface of the tip saw body.

  First, it is possible to prevent the auxiliary cord from being scattered from above by the wind pressure of the cut grass cut by the tip saw or the main cord.

  Secondly, when the auxiliary cord is rotated, the cut grass and the cut grass scattered by the tip saw and the main cord can be cut even smaller.

  Thirdly, the phenomenon that the mowing grass tends to get caught in the work rod can be surely prevented in advance by cutting with the auxiliary cord and the suppression drop, and the work efficiency can be improved.

  Fourth, no change occurs in the tip saw or cutting force, and good mowing work can always be performed together with the action of the auxiliary cord.

  Fifth, since the burden on the engine of the mower is small and the work can be performed at a medium speed, the fuel can be saved and the life of the engine is prolonged.

  The grass cut by the tip saw and main cord tries to scatter to the surroundings at a high speed, but the auxiliary cord placed above it rotates at high speed coaxially with the tip saw and the main cord board and scatters upward and around. Small cut grass will be automatically deterred and re-cut by the wind pressure.

  Therefore, the cut grass is completely prevented from scattering in the direction of the operator himself.

  1 is a main cord board. Notches 2 and 2 are provided at appropriate positions on the peripheral surface of this board, and a part of a plurality of main nylon cords 3 and 3 attached to the inside of the board is appropriately lengthened through the notches. I will pull out a minute.

  The notches 2 and 2 are for mooring and fixing the main nylon cord when the mowing operation is stopped. Therefore, at the time of work, the main nylon cord is removed from the mooring at the notch and is made free.

  Reference numeral 4 designates a coaxial disk body that is screwed so as to be detachable from the upper surface of the main code board 1, and a plurality of through holes 5 are provided at appropriate positions on the circumferential surface of the disk body.

  6 is an auxiliary nylon cord of an appropriate length with a base end fastened to the through hole 5 of the disc body 4, and this auxiliary nylon cord goes out to the peripheral surface of the main cord disk 1 It is in the upper part of the third and third parts, and the scattering angle of the cut grass is automatically changed by the rotational wind pressure so as to suppress and descend.

  The main nylon cord 3 and the auxiliary nylon cord 6 have arbitrary cross-sectional shapes such as a square shape.

  Reference numeral 7 denotes a connection port of the rotating shaft of the work rod 8.

  9 is a projecting shaft projecting from the bottom surface of the disc body 4, and when the disc body 4 is screwed to the main cord disc 1, the main nylon cords 3, 3 attached to the main cord disc are projected. It is supported by the inside of the shafts 9 and so on.

  Reference numeral 10 denotes a disc body installed on the upper surface of the main cord disc 1, and an auxiliary cord disc 12 having an auxiliary nylon cord 14.

  Reference numeral 11 denotes a metal tip saw, and an auxiliary cord board 12 having an auxiliary nylon cord 14..

  Reference numeral 12 denotes an auxiliary cord board in which auxiliary nylon cords 14 are attached to a plurality of standing pieces 13 provided around the auxiliary cord board, which is directly or indirectly on the main cord board 1 or on the center of the chip saw 11. It is to be installed in the department.

  Although not shown in the drawing, since the tip saw body is provided with a number of through holes, the auxiliary nylon cord may be fixed by selecting an arbitrary through hole, or a cut and raised piece may be provided. You may make it attach an auxiliary | assistant nylon cord to the through-hole.

Perspective view before assembly of entire example Perspective view after assembly of entire example Bottom view of the main part of an example Perspective view of the main part of another example Perspective view of another example Other perspective views

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Main cord board 2,2 Notch 3,3 Main nylon cord 4,10 Disc body 5. ・ Through hole 6. ・ Auxiliary nylon cord 11 Tip saw 12 Auxiliary cord board 13 ... Standing piece 14 ... Auxiliary nylon cord

Claims (4)

Cutter for mowing machine, characterized in that an auxiliary cord board with an auxiliary nylon cord projecting around is installed on the upper surface of the main cord board that pulls out the main nylon cord from the peripheral surface. A cutter for a mower characterized in that an auxiliary cord board having an auxiliary nylon cord projecting around is installed on the upper surface of the main nylon cord board. A cutter for a mower characterized in that an auxiliary cord board having an auxiliary nylon cord projecting around is installed on the upper surface of the tip saw. A cutter for a mower characterized in that an auxiliary nylon cord projects from the upper surface of the tip saw body.

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