JP2019083763A - Leaves thinning cutter for plant - Google Patents

Abstract

To provide a leaves thinning cutter for plant which allows safe and efficient leaves thinning work.SOLUTION: A leaves thinning cutter 1 comprises: a grip part 2 which extends in a straight state in a cross direction; a blade support part 3 which is curved in an almost C-shape to one side continuously to a front end of the grip part 2 and extended to open to the other side; a thin plate-state cutter blade 4 which is extended between a base end part 3a and a tip end part 3b of the blade support part 3, and fixed to the base end part 3a and tip end part 3b on both end parts; and a protection protrusion piece 6 which extends in a straight state to an open side of the blade support part 3 from the front end of the grip part 2, and forms a petiole introduction space 5 between it and the tip end of the blade support part 3, in which the protection protrusion piece 6 is held to the grip part 2 in a manner in which the protection protrusion piece can extend from and retreat to the tip end of the grip part 2 with a prescribed resistance.SELECTED DRAWING: Figure 1

Description

  In the process of cultivating plants such as tomato, in addition to the improvement of the light-collecting ability and the ventilation ability, work for removing unnecessary leaves is performed for the prevention of diseases and prevention of consumption of nutrients. The present invention relates to a cutter used for such an unnecessary leaf cutting operation.

Conventionally, a cutter such as METALLO K-8065 manufactured by Bladsnijmes (Non-Patent Document 1) is known as a cutter used for defoliation of plants such as tomato.
The cutter includes: a grip portion extending straightly; a blade support portion extending in a substantially C-shape and extending sideways continuously with a tip end of the grip portion; and a base end portion and a tip portion of the blade support portion And a thin plate-like cutter blade screwed to the base end and tip of the blade support at both ends, and extends straight from the tip of the grip to the open side of the blade support, And a protective projection that forms a pelvis introduction space with the tip of the support portion.
When the cutter is used, the handle is grasped, the proximal end of the leaf to be cut out is guided into the stalk introduction space, and the stalk is cut with the cutter blade by operating to shake the grip. During this cutting operation, even if many other leaves and branches are thicked adjacent to the leaf to be cut, the protective projection abuts them, thereby preventing the cutter blade from hitting and preventing damage. . In addition, the protective projection has a function of narrowing the opening portion to ensure safety in use so that the cutter blade is not exposed to the outside.

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In the above-mentioned conventional cutter, since the protective projection always protrudes from the tip of the grip, the protective projection may cause the efficiency of work to be reduced depending on the use situation. If cells on the cut surface of the stalk collapse, it causes invasion of pathogenic fungi such as gray mold, so a sharp blade with a thin blade as thin as possible, such as a razor blade, is required as a cutter blade. If it is thin, it will bend at the time of cutting and it will interfere with work. In the above-mentioned conventional cutter, since both ends of the cutter blade are only screwed, there is a problem that it is difficult to prevent the deflection of the cutter blade.
Therefore, this invention makes it a 1st subject to provide the defoliating cutter of the plant which can freely carry out a protective piece freely as needed, and can perform defoliating operation efficiently. Moreover, this invention makes it a 2nd subject to provide the defoliation cutter of the plant which can give tension to a cutter edge and to prevent the bending at the time of use.

Hereinafter, although demonstrated with reference to the code | symbol of attached drawing, this invention is not limited to this.
In order to solve the first problem described above, the defoliation cutter 1 of the present invention has a grip 2 extending straight in the front-rear direction and a substantially C-shape curved continuously to one side continuously with the front end of the grip 2 Blade supporting portion 3 extending so as to open to the other side, and between the proximal end 3a and the distal end 3b of the blade supporting portion 3, the proximal end 3a and the distal end 3b at both ends Protective protrusion that forms a pelvic introduction space 5 between a thin-plate shaped cutter blade 4 fixed to the bottom and a tip of the blade support 3 extending straight from the front end of the grip 2 to the open side of the blade support 3 6 and the protective projection 6 is held by the grip 2 so as to be able to be retracted from the tip of the grip 2 with a predetermined resistance.
In the defoliation cutter 1 of the present invention for solving the second problem, the cutter blade 4 has locking portions 4 a at both ends. The blade supporting portion 3 is fixed to the fixing locking pin 10 protruding from one side of the tip end portion so as to be fitted to one locking portion 4 a of the cutter blade 4, and to the other locking portion of the cutter blade 4 4 a A movable locking pin 11 protruding from one side surface of the proximal end 3a so as to be fitted, a traction bolt 12 supporting the movable locking pin 11 so as to be changeable in distance from the fixed locking pin 10, and the traction And a bolt holding portion 13 for holding the bolt 12 toward and away from the fixed locking pin 10. The bolt holding portion 13 has a guide hole 13a that linearly penetrates in the front-rear direction toward the fixed locking pin 10 on the base end 3a side of the blade support portion 3 and a straight end on the front end side of the guide hole 13a. And a guide slit 13b opened to one side surface of the base end 3a. The pulling bolt 12 penetrates the guide hole 13a so as to be non-rotatable about the axis and axially advanced / retractable, and has a screw portion 12a on the proximal end side projecting rearward, into which the adjusting nut 14 is screwed. Is provided so as to be exposed from the guide slit 13b. The movable locking pin 11 is provided so as to protrude from the side surface 12 b of the pulling bolt 12 through the guide slit 13 b to one side of the blade supporting portion 3. A predetermined tension is applied to the cutter blade 4 supported by the fixed locking pin 10 and the movable locking pin 11 by the tightening of the adjustment nut 14 screwed on the screw portion 12 a of the pulling bolt 12.

  In the defoliation cutter 1 of the present invention, the protective projection 6 can be freely moved in and out as needed, and efficiency of defoliation work can be achieved. Moreover, in the defoliation cutter 1 of this invention, a tension | tensile_strength is provided to the cutter blade 4, and the bending of the cutter blade 4 at the time of use and breakage can be prevented.

It is a perspective view of a defoliation cutter concerning the present invention. It is a front view of the defoliation cutter of FIG. It is a top view of the defoliation cutter of FIG. It is sectional drawing of the defoliation cutter of FIG.

Embodiments of the present invention will be described with reference to the drawings.
The defoliation cutter 1 has a grip 2 extending straight in the front-rear direction, and a blade support extending continuously to the front end of the grip 2 so as to be curved in a substantially C shape in one side and open in the other side. , A thin-plate shaped cutter blade 4 which is passed between the proximal end 3a and the distal end 3b of the blade support 3 and is fixed to the proximal end 3a and the distal end 3b at both ends; It extends straight from the front end of the blade support 2 to the open side of the blade support portion 3 and has a protective projection 6 forming a pelvis introduction space 5 between it and the tip of the blade support portion 3.

  The protective projection 6 is held by the grip portion so as to be able to be pulled out with a predetermined resistance from the tip of the grip portion 2.

  The grip portion is locked so as to extend in the front-rear direction along the inner side wall 7a extending in the front-rear direction and open at the front end, the slit 8 in the front-rear direction continuous with the inner space 7, and the inner wall 7a of the inner space 7. And a leaf spring 9.

  The protective projection 6 is accommodated in the inner space 7 of the grip 2 so as to be movable in the front-rear direction. The protective projection 6 has an operation portion 6 a that protrudes to the outside of the grip 2 through the slit 8 and an engagement side surface 6 b that faces the leaf spring 9. The engagement side surface 6 b is provided with a plurality of recesses 6 c facing the plate spring 9 and arranged at predetermined intervals in the front-rear direction.

  The plate spring 9 is provided with a plurality of convex portions 9 a that are arranged in the front-rear direction at predetermined intervals and project toward the engagement side surface 6 b of the protective projection 6. The projection 9a of the plate spring 9 engages with the recess 6c of the protective projection 6 to lock the protective projection 6, while the operation force of the front-rear direction is applied to the operation section 6a. Is located between the recesses 6c, and is elastically lifted and displaced with the engagement side surface 6b, whereby the lock is released.

  The cutter blade 4 has locking portions 4a at both ends. The blade support portion 3 is fitted to the fixed locking pin 10 protruding from one side of the tip portion 3 b so as to be fitted to one locking portion 4 a of the cutter blade 4 and the other locking portion 4 a of the cutter blade 4 It comprises a movable locking pin 11 projecting from one side of the proximal end 3a so as to fit, and a traction bolt 12 in which the movable locking pin 11 is implanted. The pulling bolt 12 is held by the bolt holding portion 13 provided on the base end 3 a side of the blade support portion 3, and is advanced and retracted toward the fixed locking pin 10 so that the distance to the fixed locking pin 10 can be changed. It is free.

  The bolt holding portion 13 has a guide hole 13a that linearly penetrates in the front-rear direction toward the fixed locking pin 10 on the base end 3a side of the blade support portion 3 and a straight end on the front end side of the guide hole 13a. And a guide slit 13b opened to one side surface of the base end 3a.

  The pulling bolt 12 penetrates the guide hole 13a so as to be non-rotatable about the axis and axially movable forward and backward, and protrudes rearward. The guide hole 13a is provided on the proximal end side of the pulling bolt 12 projecting rearward with a threaded portion 12a with which the adjusting nut 14 is screwed. The opposite side surfaces of the pulling bolt 12 are cut smoothly, and one side surface 12b is provided so as to be exposed from the guide slit 13b at the tip end side.

  The movable locking pin 11 is provided so as to protrude from the side surface 12 b of the pulling bolt 12 through the guide slit 13 b to one side of the blade support 3.

  A predetermined tension can be applied to the cutter blade 4 supported by the fixed locking pin 10 and the movable locking pin 11 by tightening the adjustment nut 14 screwed to the screw portion 12 a of the pulling bolt 12.

  When the periphery of the leaf to be cut off by the defoliation cutter 1 is crowded with other leaves and stems, the control portion 6a is pushed forward with a finger, and the protective projection 6 is at the proximal end of the blade support portion 3 By projecting from the 3a side, the stalk introduction space 5 is narrowed so that the cutter blade does not accidentally hit other surrounding leaves and stems by the cutting operation. When there is no hindrance to the peripheral leaves and stems, the protection projection 6 can be moved backward to expand the stalk introduction space 5 to make the cutting work more efficient. When mounting the cutter blade 4 to the blade support portion 3, after fitting the fixed locking pin 10 and the movable locking pin 11 to the locking portion 4 a, the adjustment nut 14 is tightened and the cutter blade 4 is fixed. It is possible to prevent the bending and breakage of the cutter blade 4 during use by applying a tension of

DESCRIPTION OF SYMBOLS 1 Defoliation cutter 2 Grip part 3 Blade support part 3a Base end part 3b Tip part 4 Cutter blade 4a Locking part 5 Petal board introduction space 6 Protection projection piece 6a Operation part 6b Engagement side 6c Recess 7 Inner space 7a Inner side wall 8 Slit 9 Leaf spring 9a Convex part 10 Fixed locking pin 11 Movable locking pin 12 Pulling bolt 12a Threaded part 12b Side face 13 Bolt holding part 13a Guide hole 13b Guide slit 14 Adjustment nut

Claims (3)

A grip portion extending straight in the front-rear direction, a blade support portion extending continuously to the front end of the grip portion so as to be substantially C-shaped in one side and open to the other side, and the blade support A thin plate-like cutter blade which is passed between 3 and the distal end and fixed to the proximal end and the distal end at both ends, and extends straight from the front end of the grip to the open side of the blade support And a protection projection that forms a pelvic introduction space between the blade support and the tip end of the blade support;
The defoliation cutter for a plant according to claim 1, wherein the protection projection is held by the grip so as to be able to appear and retract with a predetermined resistance from the tip of the grip. The grip portion is a leaf spring that is locked so as to extend in the front-rear direction along an inner wall of the inner space, an inner space extending in the front-rear direction and opening to the front end, a slit in the front-rear direction connected to the inner space And
The protective projection is accommodated in the inner space of the grip portion so as to be movable in the front-rear direction, and an operation portion projecting to the outside of the grip portion through the slit; And an engagement side surface having a plurality of recesses arranged at intervals;
The plate spring is provided with a plurality of convex portions which are arranged at predetermined intervals in the front-rear direction and which project toward the engagement side of the protective projection;
The convex portion of the plate spring engages with the concave portion of the protective projection to lock the protective convex portion, and when the operation force in the front-rear direction is applied to the operation portion, the convex portion is the concave portion The plant defoliation cutter according to claim 1, wherein the lock is released by elevating displacement with the engagement side surface located between the two. The cutter blade has locking portions at both ends,
The blade support portion is based on a fixed locking pin protruding from one side surface of the tip end portion so as to be fitted to one locking portion of the cutter blade, and to be fitted to the other locking portion of the cutter blade. A movable locking pin projecting from one side of an end, a traction bolt supporting the movable locking pin so as to be changeable in distance from the fixed locking pin, and a traction bolt capable of advancing and retracting toward the fixed locking pin And a bolt holder for holding the
The bolt holding portion has a guide hole that linearly penetrates in the front-rear direction toward the fixed locking pin at the base end portion of the blade support portion, and continues linearly at the front end side of the guide hole. And a guide slit open on one side of the unit,
The pulling bolt penetrates the guide hole so as to be non-rotatable about the axis and penetrates in an axial direction, and has a screw portion on the proximal end side which protrudes backward and in which an adjusting nut is screwed. Provided to be exposed from the slit,
The movable locking pin is provided to project from the side surface of the pulling bolt through the guide slit to one side of the blade support.
3. The method according to claim 1, wherein a predetermined tension is applied to the fixed locking pin and the cutter blade supported by the movable locking pin by tightening the adjustment nut screwed into the screw portion of the pulling bolt. Defoliating cutter for the described plants.

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