KR200484399Y1 - Sickle - Google Patents

Abstract

The present invention relates to an angle adjusting link having a comb-like projection formed on one end thereof; A rotation link provided on one side of the angle adjusting unit and having a comb-like groove corresponding to the comb-tooth-shaped protrusion on the other side, a fixing part provided on one side thereof and rotatably coupled to the angle- A fixed link coupled to the fixed portion of the rotating link, wherein the fixed link is formed with a rotating protrusion, and a fixed through hole is formed in the main portion of the rotating protrusion; And a knife blade provided between the stationary link and the stationary link of the rotary link, the knife blade being fitted to the rotating protrusion so as to be rotatable, wherein a comb-like protrusion formed on the stationary member has a comb- And the angle between the fixing part and the angle adjusting link is adjusted when they are inserted into the groove.

Description

Sick {SICKLE}

The present invention relates to a sickle which is adjustable in length and which can adjust the angle of the support rod and the sickle blade.

More specifically, it is possible to adjust the length of a support rod, which is grasped by a user to function as a handle, and adjust the angle of a sickle blade provided at the tip of the support rod. The length of the support bar and the angle of the sickle blade can be adjusted so that the sickle is easy to use and excellent in working efficiency.

Generally, sickle is used to cut grass or grain, and it is a general form that a bar (large) capable of gripping the handle and a curved sickle blade are fixed at the end of the bar.

In such a day, the user grasps the rod and pushes the gripped hand, or pulls and pulls the sickle away from the outside of the body and then returns to the grass or grain.

However, in the conventional sickle, the blade surface of the sickle blade is located on the same line as the longitudinal direction of the rod, and in order to improve the efficiency of the blade when the grass or grain is bell, the sickle- It is squeezed while being kept as vertical as possible.

Accordingly, there is a problem that the work is difficult and inconvenient because the work is performed in a state in which the posture is lowered and the worker is seated or the waist is bent.

In order to solve the above problems, a sickle has been developed which allows the user to stand up and perform a sickle work.

One such sickle that allows such a user to stand and do a sickle operation is disclosed in Korean Utility Model Publication No. 20-2012-0000618, wherein a sickle is formed at an angle.

FIG. 1 is a perspective view of a sickle in which a conventional sickle blade is formed obliquely, and the constitution thereof is such that an elongate piece 3 for coupling the sickle blade 1 to the coupling hole 10 is bent and a bolt hole 4 is formed The elongated piece 3 constituting the sickle blade 1 is engaged with the coupling grooves 11 constituting the sphere 10 and fastened with the bolts 30 through the bolt holes 4 and 12, The movable rods 22 are coupled with the bolts 30 through the bolt holes 12 and 25 so that the movable rods 22 Is inserted into the fixing rod 21 so that the knob 20 is not rotated and the fixing rod 21 and the movable rod 22 can be fixed and moved by the fixing member 23 and the tightening screw 24 And a handle (20) configured to be attached to the handle.

The sickle blade 1 is provided integrally with the sickle blade 2 in such a manner that the extension line A of the sickle blade 2 and the extension line B of the extension piece 3 are not located on the same line, Since the worker can stand and work, the work is easy and the work efficiency is enhanced.

However, it is positive that the angle between the sickle blade 2 formed with the bevel blade and the extended piece 3 connected to the handle 20 is integrally formed in an oblique manner, but the blade 2 and the extension piece 3 ) Are integrally formed, and the angle is not adjusted.

That is, since the blade 2 and the elongated piece 3 are formed integrally with each other at an angle, they can not be adjusted according to the size of the user's body.

Public Utility Model Publication No. 20-2012-0000618 (Jan. 30, 2012)

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems and it is an object of the present invention to provide an apparatus and a method for adjusting the length of a support rod functioning as a handle and an angle of a sickle blade provided at a tip of the support rod, And can easily adjust the length of the support rod and the angle of the sieve blade in accordance with the body shape of the user so that the sickle is easy to use and excellent in work efficiency.

In order to solve the above-mentioned problems, according to the present invention, there is provided a cantilever- A rotary link provided on one side thereof with an angle adjusting portion formed with a comb-like groove corresponding to the comb-tooth-shaped projection, having a fixing portion at one side thereof and rotatably coupled to the angle- A stationary link coupled to the stationary portion of the rotating link, wherein the stationary link is formed with a rotating protrusion and has a fixed through hole formed in the main portion of the rotating protrusion; And a knife blade provided between the stationary portion and the fixed link of the rotary link and provided so as to be rotatable by being pivotally inserted into the rotation protrusion, wherein a comb-like projection formed on the fixing portion is inserted into a comb- The angle between the fixing part and the angle adjusting link is mutually fixed in a state in which the angle is adjusted, thereby solving the technical problem.

The length of the support bar serving as a knob can be adjusted and the angle of the sickle blade provided at the tip of the support bar can be adjusted so that the length of the support bar and the angle of the sickle blade can be adjusted according to the user's body shape, And it has a remarkable effect that can improve the working efficiency.

In addition, the present invention can be assembled and separated by a simple structure, so that it can be easily combined with bolts and nuts when assembled. On the contrary, it is easy to disassemble and is easy to carry and store, and remarkable Effect.

1 is a perspective view of a sickle in which a conventional sickle blade is formed at an angle.
2 is a perspective view of a sickle according to the present invention.
3 is an exploded perspective view of the sickle according to the present invention.
4 is a sectional view of a securing portion provided on a rotary link in a sickle according to the present invention.
5 is an exploded perspective view of the fixing jig in the sickle according to the present invention.
6 is a cross-sectional view showing the operation principle of the fixing jig in the sickle according to the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of embodiments of the present invention, and how to accomplish them, will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. It should be understood, however, that the present invention is not limited to the embodiments disclosed herein but may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, To the person having the invention, and this invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

In the following description of the embodiments of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. The following terms are defined in consideration of the functions in the embodiments of the present invention, and this may vary depending on the intention of the user, the intention or the custom of the operator. Therefore, the definition should be based on the contents throughout this specification.

The present invention can adjust the length of the support rod functioning as a handle and adjust the angle of the sickle blade provided at the tip of the support rod, and it is easy to assemble and disassemble with a simple structure, so that the length of the support rod and the sickle The angle of the blade can be adjusted to provide a sickle that is easy to use and has excellent working efficiency.

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

FIG. 2 is a perspective view of a sickle according to the present invention, and FIG. 3 is an exploded perspective view of a sickle according to the present invention.

The present invention relates to a yarn capable of adjusting the length of a support rod and capable of adjusting the angle of a support rod and a sieve blade and includes a support rod 100, a rotary link 200, a fixed link 300, a sieve blade 400, A support rod 500 and a fixing jig 600.

The supporting rod 100 performs a handle function in the sickle according to the present invention and is connected to a sickle blade 400 to be described later on one side and an extended support rod 500 is further coupled to the other side by a fixing jig 600, So that the length thereof can be adjusted by the support rod 100 and the extension support rod 500 that perform the handle function.

As shown in the accompanying drawings, the support rod 100 may have a cylindrical shape and may be configured to be easily gripped by a user using the inner surface of the hand.

The angle adjusting link 110 is formed at one end of the support rod 100 and has a semicircular shape having a hemispherical shape. The angle adjusting link 110 is formed by cutting the intermediate portion in the lengthwise direction, Cylindrical shape, and includes a comb-like projection 111 and an angle-adjusting through-hole 112. The comb-

As shown in the accompanying drawings, the comb-like protrusions 111 are formed in a plurality of protruding shapes outwardly of a cut surface formed on the angle adjusting link 110. The plurality of comb- And is formed in a radial shape with respect to the through hole (112).

The angle adjusting through hole 112 is formed so as to penetrate inward and outward with respect to the cut surface of the angle adjusting link 110 and communicates with the angle adjusting through hole 212 formed in the rotating link 200, And the angle adjusting link 110 and the rotating link 200 are firmly coupled to each other by bolts and nuts through the angle adjusting through holes 112 and 212.

The rotation link 200 is coupled to the angle adjusting link 110 and the angle adjusting link 110 and the rotating link 200 are configured to be adjustable in angle with each other. (220).

As shown in the accompanying drawings, the rotation link 200 is formed in a generally semicylindrical shape, and the angle adjusting portion 210 is formed in a shape corresponding to the angle adjusting link 110 provided on the support bar 100 And the fixing portion 220 has a shape corresponding to the fixed link 300 described later.

The angle regulating unit 210 is formed on the other side of the rotary link 200 and is connected to the angle regulating link 110 and has a columnar shape with a hemispherical end, And is formed as a semi-cylindrical shape as a whole by cutting the intermediate portion thereof to form a cut surface. The cut portion 211 is composed of a comb-shaped groove 211 and an angle-adjusting through-hole 212.

The reason why the end of the angle regulating part 210 and the end of the angle regulating link 110 coupled to the angle regulating part 210 correspond to each other is that the angle regulating link 110 and the angle regulating part 210 Is smoothly rotated by the hemispherical curved surface so that the angle can be easily adjusted.

The comb-shaped grooves 211 are formed in the shape of a plurality of grooves widened to the inside of the cut surface formed in the angle adjusting portion 210. The plurality of comb-shaped grooves 211 are formed to correspond to the comb- When the angle adjusting link 110 and the angle adjusting portion 210 are coupled through the angle adjusting through holes 112 and 212, the comb teeth protrusion 111 is drawn into the comb tooth groove 211.

Each of the plurality of comb teeth projections 111 is inserted into each of the plurality of comb teeth grooves 211 so that the angle adjusting portion 210 is firmly coupled to the angle adjusting portion 110 in a state where the angle adjusting portion 210 is not rotated, When the bolts and nuts coupled to the angle adjusting through holes 112 and 212 are released, the comb teeth protrusions 111 and the comb tooth grooves 211 are separated from each other and the angle adjusting portion 210 is separated from the angle adjusting links 110 The angle of the sickle blade 400 coupled to the rotation link 200 having the angle adjusting part 210 and the support rod 100 having the angle adjusting link 110 is adjusted . When the angle between the support bar 100 and the sickle blade 400 is adjusted and then the bolt and nut are coupled again so that the comb-like projections 111 are drawn into the comb-shaped grooves 211, And the sickle blade 400 are firmly fixed, thereby facilitating the operation.

The angle adjusting through hole 212 is formed to penetrate the inside and the outside with respect to the cut surface of the angle adjusting portion 210 and communicates with the angle adjusting through hole 112 formed in the angle adjusting link 110, And they are firmly coupled to each other by nut coupling.

The fixing part 220 is formed on one side of the rotary link 200 and is fixed to a later-described sickle blade 400. The fixing part 220 is formed in a cylindrical shape as a whole, And has a locking projection 221, an elastic supporting groove 222, and a fixing tube hole 223, which are formed in a semi-cylindrical shape as a whole.

At this time, the cut surfaces formed in the angle adjusting portion 210 and the cut surfaces formed in the fixing portion 220 may be perpendicular to each other, as shown in the accompanying drawings.

4, the locking protrusions 221 protrude outward from the cut surface of the fixing portion 220, and are formed of a pair of rectangular and triangular shapes below the cut surface of the fixing portion 220. As shown in FIG.

When the sickle blade 400 is rotated and unfolded, the stopper 221 performs a function of preventing the sickle blade 400 from rotating when cutting grass or grain.

The resilient supporting groove 222 is formed by a ring-shaped groove that is broken into the inside of the cut surface of the fixing portion 220, and provides a space in which the elastic member 224 is fixedly installed.

At this time, the elastic member 224 may be a spring such as a leaf spring.

The elastic member 224 functions to elastically support the sickle blade 400.

The fixed pipe through hole 223 is formed to penetrate inward and outward with respect to the cut surface of the fixing portion 220 and communicates with the fixed pipe through hole 320 formed in the fixed link 300 so as to be connected to each other Ensure that they are firmly connected.

The stationary link 300 is coupled to the stationary portion 220 of the rotary link 200 and is formed in a generally cylindrical shape. The stationary link 300 is cut in the longitudinal direction of the cylindrical shape to form a cut surface, Cylindrical shape, and includes a rotation protrusion 310 and a fixing pipe hole 320. [

The rotation protrusion 310 is formed in a cylindrical shape protruding outward from the cut surface of the fixed link 300 and functions to rotate the sieve blade 400 by inserting the through hole 420 formed in the sickle blade 400 to be described later do.

The fixing pipe hole 320 is formed in a shape penetrating the inside and the outside with reference to the cut surface of the fixed link 300 and is formed at an intermediate portion of the rotation protrusion 310. The fixing pipe through hole 223 So that they are firmly coupled to each other by bolts and nuts.

The sickle blade 400 is provided between the fixing part 220 and the stationary link 300 so as to be pivotable about the pivot protrusion 310 formed on the stationary link 300, And includes a locking part 410 and a through hole 420. [

The locking part 410 is formed at the end of the sickle blade 400 which is inserted and fixed between the fixing part 220 and the fixed link 300 so as to correspond to the locking protrusion 221 of the fixing part 220 .

When the sickle blade 400 is unfolded, the engaging portion 410 is engaged with the engaging protrusion 221 so that the unfolded state of the sieve 400 is firmly fixed.

The through hole 420 is formed in the portion where the sickle blade 400 is inserted between the fixing portion 220 and the fixing link 300 and is inserted into the rotation protrusion 310 of the fixing link 300, The sickle blade 400 is installed between the fixed links 300 so as not to be separated.

The through hole 420 is formed in a shape corresponding to the pivot projection 310 so that the pivot blade 400 can rotate smoothly around the pivot projection 310.

According to this configuration, when the pivoting protrusion 310 of the fixed link 300 is fitted into the through hole 420 of the sieve blade 400 and the sickle blade 400 is inserted between the fixed portion 220 and the fixed link 300 The engaging portion 410 of the sickle blade 400 is fixed to the fixing hole through the fixing hole 221 provided in the fixing portion 220 and the fixing hole 320 formed in the fixing link 300. [ And is engaged with the rotation protrusion 310 of the link 300 to be fixed.

On the other hand, when the bolts and nuts, which secure the fixing part 220 and the fixed link 300 to each other, are released so that the bolts and the nuts are not completely separated, the elastic members 224 The snaking blade 400 and the fixed link 300 are resiliently supported by the resilient force to the outside of the cutting face of the fixing portion 220 so that the pivoting protrusion 310 and the engaging portion 410 in the engaged state are spaced apart from each other, The sickle blade 400 is rotated so that the cut surface of the sickle blade 400 can be folded so as to face the support bar 100. In this case, Thereafter, when the bolt-nut coupling which has been released is firmly coupled again, the fixing portion 220 and the fixing link 300 press the outer surface of the sieve knife 400 to hold the sieve knife 400 in the folded state can do.

Accordingly, when the sickle blade 400 is folded, the volume of the sickle itself is reduced, thereby facilitating storage. When the sickle 400 is not used, an accident caused by carelessness .

The extended support rods 500 are connected to the other side of the support rods 100 so that the support rods 100 performing the handle function can be used for a longer time. The extended support rods 500 have a cylindrical shape and include a top support 510 .

The top support table 510 is provided on the other side of the extended support rods 500 to perform a function of inserting or removing a saw used for cutting wood or the like.

Thus, by using the sickle according to the present invention, the part of the sickle blade 400 can cut grass, grain and the like, and can cut a tree or branch using a saw.

Depending on the design conditions, the top support 510 may be configured to be detachable with the elongated support rods 500.

It should be understood that the top support 510 may be coupled to the support rod 500 or the support rod 100 and may be coupled to the support rod 100.

5, the fixing jig 600 performs a function of coupling the support rod 100 and the extension support rod 500 and includes a fixed case 610, a follower 620, and a driver 630 ).

The fixed case 610 is provided between the support rod 100 and the extended support rod 500 so that the support rod 100 and the extended support rod 500 are fitted to each other to connect the support rod 100 and the extended support rod 500 to each other. And includes a circular cylinder 611, a penetrating portion 612, a support plate 613,

The cylindrical portion 611 has a hollow cylindrical shape. A part of the end of the support rod 100 is fitted on the upper side and a part of the end of the extended support rod 500 is fitted on the lower side. The inner diameter of the lower part of the cylindrical column 611 is larger than the inner diameter of the upper part of the cylindrical column 611 in which the support rod 100 is inserted.

The penetrating part 612 is formed on one side of the upper part of the cylinder 611 and provides a flow space to be vertically, downwardly, backwardly and backwardly inserted with a follower part 620 to be described later, So that the stopper 622 of the eccentric portion 620 can be moved to the inside of the cylinder 611.

The support plate 613 is provided with a first through hole 633 at a position corresponding to the second through hole 633 formed eccentrically to one side of the inside of the pinion gear 631 of the driving unit 630 so that the driving unit 630, 615 are formed.

A fixing pin (not shown) is inserted through the first through hole 615 and the second through hole 633, one side of the fixing pin is formed with a head, and the other side is formed with a fixing case 610, After the earthed portion 620 and the driving portion 630 are both installed, the presser is pressed to prevent the fixing pin from being detached.

The guide groove 614 is formed on the cylinder 611 in the up and down direction of the penetration portion 612 and functions to prevent the guide projection 623 of the follower portion 620 described later from being detached.

The follower portion 620 is inserted into the penetration portion 612 of the fixed case 610 so as to be freely movable and is configured to include a return gear 621, a stopper 622, and a guide projection 623.

When the pinion gear 631 of the drive unit 630 described later rotates, the take-up gear 621 moves to the upper portion of the through portion 612 and the support portion 100 And the extension rod 500 are fixed.

The stopper 622 is tapered so as to become wider as it goes down from the upper portion to the lower portion to improve the fixing force.

The guide protrusion 623 is formed to be lower than the height of the guide groove 614 and is formed to be narrower than the depth and has the same width so as to secure fluidity when the follower portion 620 is installed in the through portion 612 do.

Thus, the follower 620 is provided on the penetrating portion 612 and is movable only in the upper front portion or the lower rear portion without moving left and right.

The driven part 620 is inserted into the penetrating part 612 so as to be able to flow, and when the supporting rod 100 is fitted on the upper side of the cylinder 611, The supporting rod 100 is pressed by the supporting member 100 and pressed against the outer surface of the supporting rod 100 so that the supporting rod 100 is firmly engaged with the supporting rod 100. Conversely, And the other side prevents the guide protrusion 623 of the driven part 620 from being inserted into the guide groove 614 and locked to the inside of the cylindrical column 611. [

The driving unit 630 is rotatably installed on the supporting plate 613 and includes a pinion gear 631 and a lever 632. [

The pinion gear 631 has a second through hole 633 formed therein eccentrically and is inserted through the first through hole 615 and the second through hole 633 of the support plate 613 And the driving unit 630 is rotatably coupled to the fixed case 610.

The lever 632 is formed to extend from one side of the pinion gear 631 and functions as a knob so that the driving unit 630 can be easily rotated.

According to the design conditions, the fixing jig 600 may be fixed to the upper side of the extension support rod 500 so that the extension support rod 500 and the fixing jig 600 may be integrated.

The supporting rod 100 is fitted to the upper portion of the cylindrical column 611 of the fixing jig 600 fixed to the end of the extended supporting bar 500 so that the supporting rod 100 and the extending rod 500 can be coupled to each other. can do.

The operation principle of the fixing jig 600 thus constructed will be described with reference to Fig.

6 is a cross-sectional view showing the operation principle of the fixing jig in the sickle according to the present invention.

First, the support rod 100 is inserted into the upper part of the fixing jig 600 and the extension support rod 500 is inserted into the lower part of the fixing jig 600. When the lever 632 is gripped to rotate the driving part 630, The eccentric portion 620 is moved toward the penetrating portion 612 and the stopper 622 of the driven portion 620 fixes the support rod 100 to the cylindrical portion 611.

More specifically, the second through hole 633 of the pinion gear 631 is eccentrically formed so that when the pinion gear 631 is rotated by the lever 632, the pinion gear 631 is rotated by the lever gear 621 And the follower portion 620 including the return gear 621 fixes the support rod 100 to the cylinder 611. As shown in FIG.

Conversely, when the pinion gear 631 is rotated in the reverse direction by the lever 632, the driven portion 620 moves to the lower rear side, so that the fixing of the support rod 100 is released and can be disassembled.

According to this configuration, since the extended support rod 500 can be further connected to the support rod 100 according to the present invention, the length of the support rod 100 serving as the handle can be adjusted, The length of the support rod 100 and the angle of the sickle blade 400 can be adjusted according to the body shape of the user by adjusting the angle of the sickle blade 400 provided at the tip of the support bar 100, The working efficiency can be improved.

Also, since it is configured to be assembled and separated by a simple structure, it can be easily combined with bolts and nuts when assembled, and can be easily disassembled and transported and stored easily.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. It can be seen that branch substitution, modification and modification are possible.

100: support rod 110: angle adjustment link
111: comb-like projections 112, 212: angle-adjustable through-hole
200: rotation link 210:
211: comb-tooth groove 220:
221: locking projection 222: elastic supporting groove
223, 320: Fixation hole 224: Elastic member
300: fixed link 310:
320: Fixation hole 400: Sickle blade
410: engaging portion 420: through hole
500: extension support rod 510: saw support
600: Fixing jig 610: Fixing case
611: Cylinder 612:
613: Support plate 614: Guide groove
615: first through hole 620:
621: Rec gear 622: Stopper
623: guide projection 630:
631: Pinion gear 632: Lever
633: second through hole

Claims (6)

A support rod 100 having an angle adjusting link 110 with a comb-like protrusion 111 formed on one end thereof;
And an angle adjusting portion 210 having a comb-shaped groove 211 corresponding to the comb-shaped projection 111 is formed on the other side of the angle adjusting link 110. The angle adjusting portion 210 has a fixing portion 220 on one side, A rotatable link (200) coupled to enable;
A stationary link 300 coupled to the stationary portion 220 of the rotary link 200 and having a pivoting protrusion 310 formed therein and having a fixing hole 320 at an intermediate portion of the pivoting protrusion 310; And
And a sickle blade 400 provided between the fixed portion 220 of the rotary link 200 and the fixed link 300 and rotatably fitted to the pivoting protrusion 310,
When the comb teeth protrusion 111 formed on the fixing portion 220 is inserted into the comb tooth groove 211 formed in the angle adjusting link 110, the angle of the fixing portion 220 and the angle adjusting link 110 is adjusted Are mutually fixed,
The cut surface formed in the angle adjusting portion 210 and the cut surface formed in the fixing portion 220 are perpendicular to each other,
The fixing portion 220
Cylindrical shape in which the intermediate portion is cut in the longitudinal direction and has a cut surface,
A locking protrusion 221 protruding outward from the cut surface of the fixing part 220 and made of a pair of a quadrangular and triangular shape on the lower side of the cut surface;
An elastic support groove (222) having an elastic member (224) for elastically supporting one side of the sickle blade (400) in a ring shaped groove recessed inward of the cut surface of the fixing part (220); And
And a fixing pipe through hole (223) formed in a shape penetrating into and out of the cut surface with reference to the cut surface of the fixing portion (220)
The fixing pipe hole 223 formed in the fixing portion 220 and the fixing pipe hole 320 formed in the fixing link 300 are coupled by bolts and nuts,
When the fixing part 220 and the fixed link 300 are coupled to each other by bolts and nuts in a state in which the sickle blade 400 is unfolded, the engaging part 410 formed on the sickle blade 400 is engaged with the engaging projection 221 So as not to pivot,
On the other hand, when the bolts and the nuts are disengaged, the sickle blade 400 is moved toward the fixed link 300 by the elastic member 224 to release the engagement between the engagement portion 410 and the engagement protrusion 221, To cause the sickle blade (400) to pivot.
delete delete The method according to claim 1,
Further comprising an extension support rod (500) coupled to the other end of the support rod (100) so as to be extended by the fixing jig (600).
The method of claim 4,
The fixing jig 600 includes:
A penetrating portion 612 is formed on one side of the upper portion of the cylinder 611 in which the inside is penetrated and a support plate 613 having a first through hole 615 formed on the left and right sides of the penetrating portion 612, A fixing case 610 on which a guide groove 614 is formed on the penetrating portion 612;
And a stopper 622 is formed on the other side and upper and lower guide protrusions 623 are formed so as to be installed in the guide groove 614 and a flow A driven portion 620 that is inserted as far as possible;
And a driving unit 630 having a lever 632 formed on one side of the outer peripheral surface of the pinion gear 631 and eccentrically formed in the second through hole 633 and rotatably installed on the supporting plate 613, Sickle.
The method of claim 4,
The elongated support rods (500)
And a top support (510) is further provided at the other end.

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