KR101618734B1 - Konfigurieren Sie die Rasenmaherblatt Sicherheitsabdeckung Satze - Google Patents

Abstract

The present invention relates to a blade set for a grass cutter with a safety cover, capable of more enhancing safety by forming a centrifugally protruding joint blade as a rotary blade and placing a protecting cover on the top and bottom of the blade as well as forming a rake to use the rake a secondary safety cover to block stones or debris popping up toward a user, when the rake is not used as a rake. The blade set for a grass cutter with a safety cover includes: a blade head installed on a work table of a grass cutter operated with an engine; a protecting cover integrated with the blade head to surround the top and bottom of a blade; a rotary shaft installed on the blade head to be rotated by the engine; the blade installed on the rotary shaft to be rotated inside the protecting cover; and a rake formed to be rotated on the blade head to fix its position while changing a direction at 180 degrees, and used as both a safety cover and a rake.

Description

{Konfigurieren Sie die Rasenmaherblatt Sicherheitsabdeckung Satze}

The present invention relates to a lawn mower blade set in which a safety cover is integrally formed. More particularly, the present invention relates to a lawn mower blade set having a safety cover formed integrally with a rotary blade and a protective cover covering the upper and lower sides thereof, And a safety cover configured to be used as a secondary safety cover for blocking stones or foreign substances splashing to the body side of the user who is not used by the user.

Generally, a mowing machine which is carried on the back is a main power source of a small engine, and a high speed rotating power is transmitted by a wire to be rotatable to the end of a work platform. A grass mower blade rotating at a high speed by the power of a small engine approaches a weed The cutting operation is performed by cutting them using the rotational force of the blade.

However, in the case of performing the mowing work in the place where the weeds and the bamboo grass are grown as described above, it is not easy to find the stones or other hard foreign objects stuck on the ground. In the mowing process, When broken on the ground floor, broken pieces of broken blade, stone, etc. are blown by their own weight, and they are splashed to the worker and injured, thus causing frequent safety accidents.

In addition, since the knife blade has been kept at a certain interval from the ground due to the skill of the operator, the unskilled person accidentally collided with the bottom of the knife or the like on the floor and accidentally caused a safety accident.

Therefore, recently, a safety cover which is coupled to the lower side of the blade so as to prevent the blade from colliding with the bottom surface or the stone has been developed and used.

The patent literature of the prior art that has been developed so far will be described as follows.

The patent application No. 10-2015-0096204 (2015.07.06) not only facilitates the replacement of the blades, but also makes it possible to use both of the blades in both directions, thereby greatly increasing the replacement period of parts, Which can reduce the maintenance cost according to the present invention. The utility model registration application No. 20-2001-0031384 (Oct. 15, 2001) can minimize the fatigue caused by the long-time use by placing the lawn mower in contact with the ground and performing the weeding operation, The outer diameter of the rotating plate can be made larger than the outer diameter of the blade, and it is possible to prevent the stones from splashing due to friction caused by the stones and thick woods, or damage to the human body due to the breakage of the blades. In a utility model registration application No. 20-2003-0035152 (Nov. 10, 2003), a blade auxiliary support for a grass mower, to which a rotary blade is rotatably connected to a lower portion of a motor unit coupled with a work rod, And has a diameter smaller than a rotation radius of the rotary blade and a convex shape downward. At this time, the support base is composed of a rough disk-shaped upper support which is positioned at the lower part of the rotary blade and fixed to the motor part through the rotation center of the rotary blade, and a lower support part which is coupled to the lower part of the upper support part and has a convex shape do. The utility model registration application No. 20-2007-0020493 (December 21, 2007) is a blade protection mower which can combine the blade with the blade protection plate in a simple structure and minimize the unnecessary damage by preventing the external exposure of the fixing nut Wherein a protruding portion is formed on the bottom surface of the blade protecting plate so as to protrude at a predetermined length toward the ground in a circular arc shape with reference to a fixing hole formed at a central portion of the blade protecting plate so as to separate the blade protecting plate from the ground, And a fixing nut fixed via a bearing to rotatably couple the blade shaft of the work table inserted through the fixing hole. The utility model registration application No.20-2010-0003054 (2010.03.24) is to protect the blades from foreign substances such as pebbles during the work by separating the blades of the mowers from the ground by a certain height, and by pushing the blades in contact with the ground without lifting the blades The present invention relates to a safety cover for lawn mowers that can be easily installed and used in any lawn mower as well as a blade that can easily be lifted with a small force. The safety cover includes a blade portion provided with a rotating shaft that receives power and rotates, A ball portion formed at a lower portion of the blade so as to have a predetermined length smaller than the diameter of the blade and convex downward so as to separate the blade from the ground at a predetermined height; A ball protruding in a cylindrical shape with a predetermined length higher than the height of the ball portion at an inner central portion A bearing which is inserted in the ball shaft portion and whose outer ring rotates integrally with the ball shaft portion, a mounting cap inserted in the inner ring of the bearing and integrally rotated with the inner ring, And a fastening nut for fastening the rotary shaft and the mounting cap integrally with the rotary shaft in which the rotary shaft with the blades and the boss are axially inserted into the shaft hole of the mounting cap so that the boss is in tight contact with the inner ring of the bearing . Application of Utility Model Registration No. 20-2011-0002138 (2011.03.15), due to the centrifugal force caused by rotation of the rotating body, unfolding occurs, resulting in removal of weeds and scratches, and warping due to impact caused by stones And to prevent safety accidents caused by breakage. The rotating body is formed into a curved shape having a curved shape at the center, and the rim portion of the rotating body is bent in a circular shape to increase the strength of the rotating body. The rotation of the rotating body is prevented by the centrifugal force so that the rotating body is protruded to the outside of the rotating body, Ease of use and storage after use. [0001] The present invention relates to a rotary blade for a lawn mowing machine, and more particularly, to a rotary blade for a lawn mowing machine, And a hollow receiving projection protruding integrally from a central portion of the recess, the protection plate being provided on the lower side of the rotary blade; A bearing unit received and fixed in the receiving projection; And protection means installed to prevent foreign matter from being piled up between the protective plate and the rotating blade, thereby preventing collision between the stones and the obstacle and the rotating blade by removing the obstacle, and preventing the rotating blade from being damaged . [0001] The present invention relates to a safety cover for a lawn mowing machine, which is capable of protecting a lawn mowing while minimizing a safety accident occurring during a weeding operation, And a lower safety cover coupled to the rotary shaft so as to be positioned below the kneading blade, wherein the lower safety cover includes: a nut member screwed to the rotation shaft; And the panel main body is fixed to the upper safety cover through the connecting member provided at the periphery so as not to rotate so that the safety cover which protects only the lower side of the meadow edge, By covering up to the upper side of the blade, it is possible to effectively prevent foreign matter falling to the upper side of the meadow edge from being caught by the meadow edge, There is an advantage that can be prevented.

However, the protective covers of the mower blade developed so far are designed to be fixedly coupled to the rotating shaft for rotating the blade, so that a bearing for preventing the rotation of the protective cover has to be used. In this case, The cover was rotated together to lower the mowing function, as well as the risk of safety accidents. Further, there was a need to prepare a separate rake to use the mowers and scrape the mowed grasses.

The present invention solves the above problems and prevents the bearing from being used when the protective cover is mounted. The rake is integrally formed to serve as a safety cover, and the present invention can be applied to a conventional lawn mowing machine and an electric motor So that it is easy to use.

According to an aspect of the present invention, there is provided a cutting machine comprising: a blade head mounted on a work table of a mower driven by an engine; A protective cover configured to be integrally fixed to the blade head to cover upper and lower sides of the blade; A rotating shaft mounted on the blade head and rotated by the power of the engine; A blade mounted on the rotating shaft and rotating inside the protective cover; And a rake also serving as a safety cover and a safety cover used as a rake, so that the safety cover is integrally formed as a single bundle.

The present invention is configured such that a protective cover that surrounds a blade is integrally fixed to a head separately from a rotating shaft for mounting a blade so that the bearing is not used, so that the configuration is simple, the failure rate is low, There is no problem even if foreign matter is caught between the blade and the blade, and in particular, the rake is integrally formed and serves as a safety cover, so that it is not necessary to prepare a separate rake and the convenience of using a conventional engine and a lawn mower using an electric motor So that it is easy to use.

BRIEF DESCRIPTION OF THE DRAWINGS FIG.
Fig. 2 is an overall configuration of the present invention and an example of a use state as a lawn mower. Fig.
3 is a cross-sectional state diagram illustrating the configuration of the present invention.
4 is a view showing an example of the cover configuration state of the present invention.
Figure 5 is an illustration of the blade configuration state of the present invention.

The construction of the present invention will be described in detail with reference to the accompanying drawings.

A blade head (10) mounted on a workbench of a lawn mower driven by an engine;

A protective cover 20 configured to be integrally fixed to the blade head 10 so as to cover upper and lower sides of the blade 30;

A rotating shaft (15) mounted on the blade head (10) and rotated by the power of the engine;

A blade 30 mounted on the rotating shaft 15 and rotating inside the protective cover 20;

And a rake (40) configured to rotate on the blade head (10) and fixed in position while being rotated in a direction of 180 ° and serving as a safety cover and a safety cover used as a rake, and a safety cover Thereby constituting a set.

At this time, the blade 30 may be rotated by driving the electric motor 50 by mounting the electric motor 50 on the blade head 10.

The protective cover 20 is integrally mounted to the blade head 10 and is divided into at least six or more wheel guards 21 on which the base wheel 31 of the blade 30 is located, 23 constitute a blade rotating portion 24 constituting a pull guiding groove 23 in the outer light integrally formed with the upper lid and being divided to correspond to each other, And the inner side is connected to the circular frame 25 to constitute an assembling hole 26. [

The blade 30 includes a base wheel 31 constituting a cutting edge engaging pin 32 for engaging the cutting edge 35 to rotate at least two or more along the outer periphery and adapted to be screwed to the rotary shaft 15, A cutting blade 35 coupled to the cutting edge engaging pin 32 of the base wheel 31 and projecting by a centrifugal force and a cutting blade 35 screwed to the rotary shaft 15, And a cover wheel (33) which is attached to the engaging pin (32) to prevent the cutting edge (35) from coming off.

The rake 40 constitutes a neck portion 41 pivotally connected to the blade head 10. The rake 40 gradually widens in a fan shape from the neck portion 41 and then is bent downward to form a plurality of claws 42 The hook 42 is used as a rake 40 when the hook 42 faces forward and the hook 42 serves as a safety cover when the direction of 180 is changed.

In the coupling of the rake 40 to the blade head 10, the blade head 10 is formed with a coupling groove 11 whose rear side, on which the work table is mounted, The neck portion 41 of the rake 40 is engaged with the engaging groove 11 when the lug 40 comes into contact with the ground when the lug 42 comes into contact with the ground, The stop projections 45 and the stop holes 43 are formed so as to be fixed at the positions when the front and rear members 42, 42 face forward or backward.

Hereinafter, an embodiment of the present invention will be described.

The protective cover 20 is integrated with the blade head 10 and the blade 30 is formed on the rotary shaft 15 formed on the blade head 10 through the assembly hole 26 of the protective cover 20 The base wheel 31 is engaged and then the cutting edge 35 is engaged with the cutting edge engaging pin 32 of the base wheel 31 and the cover wheel 33 is engaged so that the cutting edge 35 is engaged with the cutting edge engaging pin 32).

At this time, the protective cover 20 may be integrally formed with the blade head 10, but it may be separately manufactured and integrally fixed.

The cutter blade 35 is provided with a catching hole larger than the outer diameter of the cutter blade pin 32 so that the cutter blade 35 should be freely rotated when the cutter blade 35 is engaged with the cutter blade pin 32.

The knife head 10 is formed with a coupling groove 11 inclined at a lower front side and a rear side higher and a neck portion 41 of a rake 40 having a hook 42 formed thereon is engaged with a hook 42 The claws 42 come into contact with the ground so that the claws 40 can be used and the claws 42 are rotated 180 degrees so that the claws 42 come to the rear side, Away from the ground to serve as a safety cover.

At this time, the stopper 45 is engaged with the stop hole 43 so that the hook 42 is used as a rake toward the front or as a safety cover toward the rear.

The present invention thus completed can be used in connection with a workbench of a lawn mowing machine using an existing engine, and a mounting portion of an electric motor 50 is formed so as to extend from the blade head 10, It can also be rotated.

The present invention described above can be conveniently used for lawn mowers used in rural areas.

10: blade head 11: engaging groove 15: rotary shaft
20: protective cover 21: wheel cover 23: full guide groove
24: Blade rotating part 25: Circular tee 26: Assembly
30: blade 31: base wheel 32: cutting blade pin
33: cover wheel 35: cutting blade 40: rake
41: neck 42: hook 43: stop ball
45: stop projection 50: electric motor

Claims (6)

A blade head (10) mounted on a workbench of a lawn mower driven by an engine;
A protective cover 20 configured to be integrally fixed to the blade head 10 so as to cover upper and lower sides of the blade 30;
A rotating shaft (15) mounted on the blade head (10) and rotated by the power of the engine;
A blade 30 mounted on the rotating shaft 15 and rotating inside the protective cover 20;
And a rake (40) configured to rotate on the blade head (10) and fixed in position while being rotated in a direction of 180 ° to serve as a safety cover and a safety cover used as a rake. A set of knives for a single mowing machine. The method according to claim 1,
Wherein the electric motor (50) is mounted on the blade head (10), and the blade (30) is rotated by driving the electric motor (50). The method according to claim 1,
The protective cover 20 is integrally mounted to the blade head 10 and is divided into at least six wheel belts 21 in which the base wheel 31 of the blade 30 is located to form a full guide groove 23 And a blade rotating part 24 which is integrally formed with the upper lid and is divided so as to correspond to each other to constitute a pull guiding groove 23 in the outside light and constitutes a blade rotating part 24, (25) to constitute an assembly hole (26). The method according to claim 1,
The blade 30 includes a base wheel 31 constituting a cutting edge engaging pin 32 for engaging the cutting edge 35 to rotate at least two or more along the outer circumference and adapted to be screwed to the rotary shaft 15, A cutting blade 35 coupled to the cutting edge engaging pin 32 of the base wheel 31 and projecting by a centrifugal force and a cutting blade 35 screwed to the rotary shaft 15, Wherein the joint blade is formed of a cover wheel (33) which is in close contact with the pin (32) and prevents the cutting edge (35) from being detached. The method according to claim 1,
The rake 40 constitutes a neck portion 41 pivotally connected to the blade head 10. The rake 40 gradually widens in a fan shape from the neck portion 41 and then is bent downward to form a plurality of claws 42 The hook 42 is used as a rake 40 when the hook 42 is turned forward and the hook 42 serves as a safety cover when the direction is changed by 180 ° so as to protect the worker. The method according to claim 1,
When the rake 40 is pivoted to the blade head 10, the blade head 10 is formed with a coupling groove 11 whose rear side, on which the work table is mounted, The neck portion 41 of the rake 40 is engaged with the engaging groove 11 when the lug 40 comes into contact with the ground when the lug 42 comes into contact with the ground, Wherein the stop projections (45) and the stop holes (43) are formed so as to be fixed at the positions when the front cover (42) faces forward or backward.

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