KR20170081442A - Lawn trimmer - Google Patents

Abstract

The present invention relates to a hair removal device for releasing a fastening means such as a bolt and exposing a blade fixation member which fixes a cutting blade immediately upon lifting an upper plate, thereby easily and easily replacing the cutting blade, The purpose is to provide.
Particularly, in the present invention, when the cutting edge is formed as a double-edged blade and one of the blades is dull or broken, the cutting blade is pulled out from the blade fixing member and then rotated and reattached so that both blades can be used, Or to reduce the cost of maintenance while reducing industrial waste.
Further, according to the present invention, since a revolving plate is further mounted on the lower portion of the lower plate and the revolving plate is formed slightly larger than the lower plate, it is possible to prevent safety accidents that may occur as the rotating lower plate hits against a stone, There is another purpose in providing a cutter that allows.

Description

Cutter {LAWN TRIMMER}

More particularly, the present invention relates to a hair clipper, and more particularly, to a hair clipper which can be easily assembled or replaced by bolting an upper plate on a lower plate and a blade fixing member sandwiched therebetween, In addition, it is easy to maintain, and the blade is made double-edged so that the blade can be reversed according to the direction of rotation to use both blades.

Cutting machines are called lawn mowers and can be classified into various forms depending on the work subject, cutting width and cutting condition. Among them, a small mobile type which is constructed to hang on a shoulder or to hang on a home or a narrow place is often used. Patent Literatures 1 to 4 disclose techniques relating to such a small cutter.

(Patent Document 1) Korean Patent No. 1469821

The protective cover attached to the rotary housing is rotatably supported by the bearing while increasing the radius of rotation of the cutting blade mounted on the rotary housing, thereby improving workability by increasing the working radius of the cutting blade, To provide a safe and easy-to-use, ready-to-use cutter that can safely cut out the dangerous objects such as the rotation of the rotating housing or the work of the cutter. In particular, it is possible to always receive the support by the predetermined elastic force when the work is performed, so that it is possible not only to prevent the safety accident caused by excessive rotation of the work piece, but also to prevent the damage It is possible to use the replacement easily to prevent noise and safe cutting work. And, if only the fastening bolt which rotatably supports the cutting blade is loosened, it can be directly mounted on the rotary shaft of the conventional cutter, and can be used conveniently and quickly, and can be easily replaced and provided with a safe cutter.

(Patent Document 2) Korean Patent No. 1508750

The cutter includes a rotary body having a shaft mounting hole for fastening the drive shaft, a fastening body detachably coupled to the cutter mounting portion formed on the rotary body, and a cutter extending from the fastening body. The cutter mounting portion includes a first mounting groove into which the fastening body can be inserted, a second mounting groove extending from the first mounting groove to the outside of the rotating body, and a second mounting groove extending from the end of the second mounting groove to the outer circumference of the rotating body A third mounting groove is formed to extend so as to increase in width. The fastening body is provided with a ring member having a support ring, and the cutter is fastened to the ring member.

(Patent Document 3) Korean Registered Patent No. 1542135 (Registered on May 30, 2015)

In the present invention, the module main body 100, the disk kiss type top cover 200, the disk kiss type bottom cover 300, the SF bearing member 400, the blade supporting disk 500 and the sawtooth one- It is a blade kiss type knife blade module with excellent safety to prevent foreign matter inflow and rotation inertia which can improve the safety and lower the product price by 80% even when the knife is hit by a stone during rotation. .

(Patent Document 4) Korean Patent Laid-Open No. 10-2015-0105898 (Publication Date: 2015.09.18)

It is possible to rapidly move and sow a lawn mower having a pair of left and right front wheels and a pair of right and left rear wheels with a traveling vehicle frequently operated. The present invention also provides a lawn mower supported on an extended end of a wheel supporting frame extending from the end in the gas longitudinal direction of the base frame in the gas transverse outward direction so as to be able to steer the wheel, Even if the length of the wheel is increased to increase the angle of bend of the wheel, it is possible to realize a lightweight and inexpensive support of the wheel

However, these conventional cutters have the following problems.

(1) As the number of components increases, it is difficult to assemble and disassemble, maintenance is difficult, and weight is large, which makes it difficult for a worker to carry and work for a long time.

(2) In case of using a cutter, it is necessary to clean or clean the inside of the cutter after the cutter is dull or broken and replaced or cut off after using the cutter. The existing cutter has a complicated internal structure and many components. Maintenance was difficult and time consuming.

(3) In addition, in case of manufacturing a conventional cutter, since a plurality of parts must be manufactured and assembled, not only the manufacturing cost is high, but also the assembly is required for the operator to assemble each part.

(4) Conventional cutting machines are usually made to rotate in the clockwise direction. Therefore, the used workday once can not be used on the other side and should be discarded.

(5) As the number of components increases, the weight of the existing workload increases, resulting in a decrease in competitiveness due to the labor force of the worker doubles and the fatigue rises rapidly in the environment in which the workload is lifted (without touching the ground).

Korean Registered Patent No. 1469821 (Registered on December 1, 2014) Korean Registered Patent No. 1508750 (Registered on March 31, 2015) Korean Registered Patent No. 1542135 (Registered on May 30, 2015) Korean Patent Laid-Open No. 10-2015-0105898 (published on 2015.09.18)

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a method and apparatus for releasing a fastening member such as a bolt and exposing a blade fixing member, The purpose of the present invention is to provide a cutter that can be manufactured.

Particularly, in the present invention, when the cutting edge is formed as a double-edged blade and one of the blades is dull or broken, the cutting blade is pulled out from the blade fixing member and then rotated and reattached so that both blades can be used, Or to reduce the cost of maintenance while reducing industrial waste.

Further, according to the present invention, since a revolving plate is further mounted on the lower portion of the lower plate and the revolving plate is formed slightly larger than the lower plate, it is possible to prevent safety accidents that may occur as the rotating lower plate hits against a stone, There is another purpose in providing a cutter that allows.

In order to achieve the above object, a hair removal machine according to [Embodiment 1] of the present invention comprises a mounting space 110 provided with a center of one side protruding to one side, A lower plate 100 formed in pairs on the imaginary circle and radially formed with at least two lower protrusions 120 protruding; An upper plate 200 provided in close contact with the mounting space 100 and having upper protrusions 210 protruding from the upper protrusions 210 at positions facing the lower protrusions 120; And a transverse portion is fitted and fixed to the lower protrusions 120 and the upper protrusions 210 respectively and the cutter 310 is disposed between the lower protrusions 120 and the upper protrusions 210 At least two blade fixing members (300) rotatably mounted; At least two fasteners 400 for sequentially passing through and fixing the upper plate 200, the blade fixing member 300, and the lower plate 200; A rotating shaft (500) rotatably receiving a rotating force from the outside and installed to penetrate through the upper plate (200) and the mounting space (100); And a support plate 600 fitted to the rotary shaft 500 protruding into the mounting space 100 and rotatably mounted together with the lower plate 100.

Particularly, the cutting blade 310 has a shape in which both edges are bent inward and both edges are formed, and reinforcing projections are protruded on one side.

The rotary shaft 500 is fitted to the upper plate 200 and the mounting space 100 by being spline coupled.

In the structure of the first embodiment, the support plate 600 is inserted into the mounting space 110 so as not to be exposed to the outside, The plate (600) is further provided with a revolving plate (700) so as to idle while being supported by the bearing (710).

Lastly, the revolute plate 700 is formed to be slightly larger than the lower plate 100 so that the lower plate 100 is prevented from being obstructed by obstacles.

The cutter according to the present invention has the following effects.

(1) It is simple to construct and easy to manufacture and inexpensive (about half of existing products). Also, since the number of parts can be reduced, the weight of the entire cutter can be reduced, and the fatigue degree of the operator can be reduced even if it is operated for a long time.

(2) Especially, it is easy to maintain and maintain the structure when exchanging cutting edge or cleaning inside of cutter.

(3) It is possible to use both sides of the cutting edge because the cutting edge can be formed as a double blade, and one blade can be used, and then the blade can be turned upside down and the other blade can be used. Therefore, it is possible to reduce the industrial waste by using only one blade, and it is possible to reduce the maintenance cost. At this time, the cutting blade can be easily replaced by changing the mounting direction once the fastener is released.

(4) Particularly, when the cutter blade is mounted on a ring-shaped blade fixing member and the fastener is removed, the cutter blade can be changed or the mounting direction can be changed easily, so that it is convenient to replace or replace the cutter blade easily.

(5) Since the upper plate and the lower plate are spline-coupled to the rotary shaft to increase the coupling force, it is possible to prevent a safety accident by preventing the mounting portion from being easily loosened or peeled off.

(6) When the idle plate is further constructed to idle under the lower plate, the idle plate is brought into contact with the surface of the sheet to prevent the rotating portion from directly touching the sheet surface, so that the sheet can be safely cut.

(7) Since the idle plate is wider than the lower plate, the idle plate comes first to the stone or the tree when cutting, so that a safety accident that may occur due to the rotating portion being caught on the stone or the tree can be prevented.

(8) The entire rotating part can be installed or separated at once by a simple operation of tightening or loosening the nut. This makes it easy to replace or separate the rotary part of the hair trimmer according to the present invention on the existing rotary shaft, and thus it can be easily replaced.

FIG. 1 is a perspective view showing an entire configuration of a hair removal device according to Embodiment 1 of the present invention; FIG.
FIG. 2 is an exploded perspective view showing a state of bonding of a hair clipper according to [Embodiment 1] of the present invention. FIG.
[Fig. 3] is a cross-sectional view showing a bonded state of a hair removal device according to [Embodiment 1] of the present invention. [Fig.
FIG. 4 is a sectional view showing a state of the hair removal device according to [Embodiment 2] of the present invention. FIG.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should properly define the concept of the term to describe its invention in the best possible way The present invention should be construed in accordance with the spirit and scope of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and are not intended to represent all of the technical ideas of the present invention. Thus, various equivalents And variations may be present.

The cutter according to the first embodiment of the present invention includes a lower plate 100, an upper plate 200, at least two blade fixing members 300, at least two A fastener 400, a rotary shaft 500, and a support plate 600.

Accordingly, the present invention can be easily and inexpensively manufactured with a simple overall structure, and can be easily maintained even when the interior is cleaned or the internal structure is sometimes replaced. In addition, the cutting blade 310 which is sandwiched by the blade fixing member 300 is manufactured as a double blade and can be used twice as the mounting direction is different.

Hereinafter, this configuration will be described in more detail.

The lower plate 100 may be formed in various shapes as a portion abutting the paper surface as shown in FIGS. 1 to 3, but it is most preferable to manufacture the lower plate 100 in the form of a disc.

The lower plate 100 forms a mounting space 110 protruding outward at the center as shown in FIGS. 2 and 3. The mounting space 110 is a space for receiving the support plate 600, which will be described later, and supports the upper plate 200 at the protruding upper portion.

2 and 3, the lower plate 100 is formed with a lower projection 120 on a surface on which the mounting space 110 is formed, and on a virtual circle centered on the mounting space 110. As shown in FIG. The lower protrusions 120 are formed in pairs so that the blade fixing member 300 will be described later. In particular, at least two lower protrusions 120 are formed radially and at least two cutting edges 310 are mounted . It is preferable that the number of the lower protrusions 120 is 2 to 4, and three lower protrusions 120 are shown.

The lower protrusion 120 supports the cutter 310 in a horizontal state without falling down when the cutter 310 to be described later does not rotate as in the upper protrusion 210 described later.

The upper plate 200 is mounted on the lower plate 100 as shown in Figs. 2 and 3. At this time, the center portion of the upper plate 200 is mounted in close contact with the mounting space 110, and then the lower plate 200 is tightly fixed to the lower plate 200 with a fastener 400 to be described later.

Particularly, as shown in FIGS. 2 and 3, the upper plate 200 forms upper protrusions 210 in pairs at positions facing the lower protrusions 120 described above. The upper projection 210 is for fixing one side of the blade fixing member 300 by sandwiching it. At this time, the upper protrusion 210 is formed to have a predetermined gap between the upper protrusion 210 and the lower protrusion 120, so that the cutting edge 310 can protrude outward.

The upper plate 200 has a through hole formed at its center so that the rotary shaft 500 can be inserted into the through hole. At this time, it is preferable that a boss 220 is formed in the through hole so as to be spline-coupled with the rotation shaft 500 to increase the coupling force.

In FIG. 2, the insert 200 '' is formed integrally with the upper plate 200 and the insert 200 'is formed on the insert 200', so that a fastener 400 to be described later is inserted Respectively.

The blade fixing member 300 has a "C" shape as shown in FIG. 2 and FIG. 3, and the cutting blade 310 is fitted in the vertical portion so as to be rotatable. In addition, the blade fixing member 300 is fitted in the lower protrusion 120 and the upper protrusion 210, respectively. In order to prevent the blade fixing member 300 from being dislodged by the rotational force generated when the cutter is used, And the fastener 400 is inserted through the through hole 320.

Particularly, in the preferred embodiment of the present invention, it is preferable that the cutting edge 310 is fabricated with a double-edged blade. This is to enable the use of the opposite blade when the cutting blade 310 is inserted into the blade fixing member 300 so that the blades 310 are turned upside down when one blade is used and the blades are dull or broken. In this case, each blade portion is formed to be bent inward to increase the cutting effect, and one side is provided with reinforcing projections so as to obtain a structural rigidity, so that a safety accident such as bending or breaking during the cutting operation It is preferable to configure such that it can be prevented from occurring.

These blade fixing members 300 are prepared in the same number as the above-described lower projection 120, and three examples are shown in the drawing.

The fastening tool 400 penetrates the upper plate 200, the blade fixing member 300 and the lower plate 200 in order to fix the upper plate 200 and the lower plate 200 together as shown in FIGS. A bolt may be used as the fastening tool 400. A nut 410 coupled to the fastening tool 400 may be formed integrally with the lower plate 100 in an insert manner so that fastening and loosening operations can be easily performed. .

Since the blade fixing member 300 can be pulled out as the fastening tool 400 is loosened, the cutting blade 310 can be easily replaced by replacing the cutting blade 310 with a new one or by cutting off the opposite blade.

As shown in Figs. 1 to 3, the rotary shaft 500 is made of a conventional technique used to rotate the cutting edge in the field to which the hair removal machine belongs. Particularly, the rotary shaft 500 passes through the upper plate 200 and the lower plate 100, and the end of the rotary shaft 500 protrudes into the mounting space 110.

3, a spline 510 is formed at a portion where the upper plate 200 and the lower plate 100 are fitted, and the boss 220 formed on the upper plate and the splines 510, It is preferable that the coupling force is increased so as to be integrally rotated. Of course, these splines can be used with the friction force fixed without coupling.

The support plate 600 is fitted in the mounting space 110 and mounted on the rotary shaft 500 protruding into the mounting space 110 as shown in Figs. At this time, the support plate 600 is inserted into the rotary shaft 500 and then is fastened with the nut 610 so that the lower plate 100 and the upper plate 200 together with the rotary shaft 500 can rotate together. Accordingly, the rotating body according to the present invention can be easily installed or removed by loosening or tightening the nut 610. [

The support plate 600 is opened to protect the mounting space 110, which is exposed on the ground surface, to prevent a stone or a grass from entering the interior of the installation space.

The hair cutter according to the first embodiment of the present invention constructed as described above can be easily and inexpensively manufactured because of its simple structure and can be easily and quickly used even when parts are replaced or cleaned, There is an effect that can be used.

As shown in Fig. 4, the hair removal unit according to [Embodiment 2] of the present invention is further added with the idle plate 700 as compared with [Embodiment 1]. Here, the same reference numerals are used for the same components as in [Embodiment 1], and a detailed description thereof will be omitted, and only other configurations and additional configurations will be described.

[Embodiment 2] As shown in Fig. 4, the idle plate 700 is added below the lower plate 100. [ The revolute plate 700 is provided to prevent the revolving of the lower plate 100 due to the rotation of the revolving shaft 500 and to prevent the revolving of the lower plate 100, thereby enhancing the safety in the cutting operation. That is, when the rotary shaft 500 rotates to perform a cutting operation, when the lower plate 100 rotates together and the rotating lower plate 100 contacts an object such as a ground or a stone, There is a risk of causing a safety accident off the desired direction.

In order to prevent this, the revolving plate 700 is further configured to be placed under the lower plate 100. At this time, the idle plate 700 has a central portion protruding into the mounting space 110, and a bearing 710 is interposed between the protruded portion and the support plate 600 '.

Here, the support plate 600 'is the same as the one described in the first embodiment, but the support plate 600' is reduced in size so that the support plate 600 'is inserted into the mounting space 110, will be. In Fig. 4, a reference numeral 720 denotes a lid which closes the lower portion of the idle plate 700 and allows the nut 610 installed in the mounting space 110 to be tightened or loosened.

Meanwhile, in the preferred embodiment of the present invention, the orbiting plate 700 is preferably formed slightly wider than the lower plate 100, as shown in FIG. This is because, when there is an obstacle protruding from the ground during the cutting operation, the revolute plate 700 is first brought into contact with the obstacle so that the revolving body including the lower plate 100 is prevented from touching the obstacle, to be.

As described above, the cutter according to [Embodiment 2] of the present invention can be expected to have an effect of preventing a safety accident as well as a simple configuration.

100: lower plate 110: mounting space
120: lower projection 200: upper plate
210: upper protrusion 220: boss
300: blade fixing member 310:
400: fastener 500: rotating shaft
510: spline 600: support plate
700: idle plate

Claims (5)

At least two lower protrusions 120 are formed in pairs on the imaginary circle centering on the mounting space 110 and radially formed on the periphery of the mounting space 110, A lower plate 100 which is formed as a protrusion;
An upper plate 200 provided in close contact with the mounting space 100 and having upper protrusions 210 protruding from the upper protrusions 210 at positions facing the lower protrusions 120;
And a transverse portion is fitted and fixed to the lower protrusions 120 and the upper protrusions 210 respectively and the cutter 310 is disposed between the lower protrusions 120 and the upper protrusions 210 At least two blade fixing members (300) rotatably mounted;
At least two fasteners 400 for sequentially passing through and fixing the upper plate 200, the blade fixing member 300, and the lower plate 200;
A rotating shaft (500) rotatably receiving a rotating force from the outside and installed to penetrate through the upper plate (200) and the mounting space (100); And
And a support plate (600) fitted to the rotary shaft (500) projecting into the mounting space (100) and rotatably mounted together with the lower plate (100).
The method according to claim 1,
The cutting unit 310 is configured such that,
Wherein both edges are formed in a shape in which the both edges are bent inward, and reinforcement projections are protruded on one side.
The method according to claim 1,
The rotation shaft (500)
Wherein the upper plate (200) is fitted to the mounting space (100) by spline coupling.
4. The method according to any one of claims 1 to 3,
The support plate 600 is inserted into the mounting space 110 so as not to be exposed to the outside,
Wherein an idle plate (700) is further provided on the support plate (600) so that idle rotation can be performed while being supported by the bearing (710).
5. The method of claim 4,
Wherein the revolute plate (700) is formed to be slightly larger than the lower plate (100) so that the lower plate (100) is prevented from being obstructed by obstacles.

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