JP2023048550A - Scissors for harvesting field crop - Google Patents

Abstract

To provided scissors for harvesting field crop which are equipped with a pinching part having appropriate pinching force to a stem or a peduncle of a field crop.SOLUTION: Scissors for harvesting field crop 10 comprises: a cutting scissor part which is capable of cutting a stem or a peduncle of a field crop by closing a first blade part 21a and a second blade part 22a; a pinching part which has a first pinching body 21d which is provided along the first blade part 21a and rotates while interlocking with the first blade part 21a, and a second pinching body 22d which is provided along the second blade part 22a and rotates while interlocking with the second blade part 22a, is positioned between the field crop and the cutting scissor part when the first blade part 21a and the second blade part 22a are closed, and capable of pinching the stem or the peduncle by narrowing a gap between the first pinching body 21d and the second pinching body 22d. A part of a tip side of the first pinching body 21d displaces in a widening direction of a gap between the first pinching body 21d and the second pinching body 22d.SELECTED DRAWING: Figure 6

Description

The present invention relates to crop harvesting scissors used for harvesting crops such as fruit vegetables and leafy vegetables.

Conventionally, as an end effector that also functions as harvesting scissors used in an automatic harvesting device for agricultural products such as fruit vegetables and leafy vegetables, there are fruit harvesting scissors that receive power to open and close to cut fruit stalks, etc., and under the fruit harvesting scissors. An end effector has been proposed that has a fruit stem clamping lower blade that is attached to the side of the fruit harvesting scissors and opens and closes in accordance with the operation of the fruit harvesting scissors to clamp the fruit stem. Since this end effector clamps the fruit stalk at the same time as cutting the fruit stalk, the fruit can be grasped and transported without touching the fruit.

However, the conventional end effector has a problem that an indentation remains on the fruit stem clamped by the fruit stem clamping lower blade. On the other hand, if the clamping force is weakened so as not to leave an impression on the fruit peduncle, there is a problem that the fruit will drop. Therefore, there is room for improvement in the configuration of the portion of the crop harvesting scissors that clamps the stem or fruit stalk of the crop.

JP 2004-180554 A

SUMMARY OF THE INVENTION It is an object of the present invention, in view of the above-mentioned problems, to provide scissors for harvesting crops, which are provided with clamping portions having an appropriate clamping force for the stems or stalks of crops. do.

The present invention provides a first scissors body having a first blade portion on one end side and a first handle portion on the other end side, and a second scissors body having a second blade portion on the one end side and a second handle portion on the other end side. Two scissors bodies are rotatably attached by a shaft member, and a cutting scissors part capable of cutting the stem or peduncle of a crop by closing the first blade part and the second blade part, and the first blade part. A first holding body provided along and rotating in conjunction with the first blade, and a second holding body provided along the second blade and rotating in conjunction with the second blade. When the first blade and the second blade are closed, they are positioned between the crop and the cutting scissors. A clamping portion capable of clamping the stem or the stem, and a first elastic deformation for displacing a portion of the tip side of the first clamping body in a direction in which the distance between the first clamping body and the second clamping body widens. The scissors for harvesting crops are provided with a part.

According to the present invention, it is possible to provide scissors for harvesting crops having clamping portions having an appropriate clamping force for the stems or stalks of crops.

FIG. 2 is an explanatory diagram showing an example of the configuration of an automatic harvesting device equipped with crop harvesting scissors. The bottom view of the crop harvesting scissors with the scissors portion closed. The right side view of the crop harvesting scissors with the scissors portion closed. Fig. 3 is a left side view of the crop harvesting scissors with the scissors portion closed; A partially enlarged view of the crop harvesting scissors showing the structure of the shaft support. FIG. 3 is a bottom view of the crop harvesting scissors with the scissors portion opened. Fig. 3 is a right side view of the scissors for harvesting crops, showing the configuration of the first blade portion and the second blade portion; Fig. 3 is a left side view of the crop harvesting scissors showing the configuration of the first blade. FIG. 4 is a bottom view of the crop harvesting scissors showing the configuration of the first blade. FIG. 4 is an explanatory diagram showing a state in which a part of the object to be cut is sandwiched; FIG. 4 is an explanatory view showing the state of the crop harvesting scissors when the scissors portion is closed; FIG. 4 is a cross-sectional view showing the configuration of the first blade and the second blade when the scissors are closed; Explanatory drawing which shows the structure of the scissors for crop harvesting in a modification. Explanatory drawing which shows the structure of the scissors for crop harvesting in a modification. Sectional drawing which shows the structure of the 1st blade part in a modification, and a 2nd blade part.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing an example of the configuration of an automatic harvesting device 1 having crop harvesting scissors 10 for harvesting crops such as fruit vegetables and leafy vegetables.

The crop harvesting scissors 10 function as an end effector of the automatic harvesting device 1 . Agricultural crops harvested by the automatic harvesting device 1 include common crops such as paddy rice, upland rice, wheat, corn, potatoes, beans, etc., horticultural crops such as vegetables, fruit trees and flowers, and products such as cotton. Examples include craft crops used as raw materials.

As shown in FIG. 1, the automatic harvesting device 1 includes a control unit 2, a traveling unit 3, a measuring unit 4, a manipulator unit 5, a scissors driving unit 6, crop harvesting scissors 10, and the like. The traveling section 3, the measuring section 4, the manipulator section 5, and the scissors driving section 6 are each connected to the control section 2 via a communication line (bus). In addition, the automatic harvesting device 1 may include a communication unit or the like for communicating with an external computer (including other automatic harvesting devices).

The control unit 2 includes a calculation unit, a storage unit, etc., and executes various calculations and control operations in the automatic harvesting device 1 . The calculation unit is a calculation processing unit including a CPU, MPU, or the like. The storage unit includes RAM (DRAM), ROM, and the like. The RAM is used as a work area and a buffer area for the arithmetic unit. The ROM stores the startup program of the automatic harvesting device 1 and default values for various information. Note that the storage unit may include other non-volatile memory (auxiliary storage unit) such as HDD, SSD, flash memory, and EEPROM. In this case, programs for controlling the operation of the automatic harvesting device 1 and various data are stored in the auxiliary storage unit.

The traveling unit (traveling vehicle) 3 has wheels, a traveling motor, and the like, and receives power supplied from a battery or the like, drives the traveling motor according to a signal from the control unit 2, and uses the wheels to harvest crops. move within. The traveling portion 3 can move to any position according to a signal from the control portion 2 . Components such as the control unit 2 , the measurement unit 4 , the manipulator unit 5 , the scissors driving unit 6 and the crop harvesting scissors 10 are mounted on the traveling unit 3 and move together with the traveling unit 3 . Furthermore, although illustration is omitted, the traveling portion 3 is provided with a harvesting basket for storing harvested agricultural products.

The measurement unit 4 is provided to measure the position of the crop that is the harvest target, and has a detection sensor that detects the position of the crop that is the harvest target. The detection sensor is, for example, a camera (CCD color camera) or a distance sensor. The camera, which is, for example, a CCD color camera or the like, takes an image of the crops to be harvested and outputs the image to the control unit 2 . The distance sensor is an infrared sensor, an ultrasonic sensor, a laser distance sensor, or the like, and outputs data on the distance to an object such as crops to be harvested to the control unit 2 . The control unit 2 analyzes the image data or the distance data input from the measurement unit 4 and calculates the relative position between the automatic harvesting device 1 and the target crop.

The manipulator unit 5 includes a manipulator having two or more arms and joints provided between the arms, and a controller that operates the manipulator. One end (base end) of the manipulator is attached to the traveling portion 3, and the other end (tip end) of the manipulator is movable by the action of the joint. A scissors drive unit 6 and crop harvesting scissors 10 are provided at the tip of the manipulator. The controller is electrically connected to the control unit 2 and operates the manipulators under instructions from the control unit 2 . For example, the controller can operate to bring the tip of the manipulator (crop harvesting scissors 10) closer to the target crop. That is, the control unit 2 can move the crop harvesting scissors 10 by controlling the manipulator unit 5 .

The scissors drive unit 6 has a scissors drive motor or the like as a rotational drive source, and receives electric power supplied from a battery or the like, and the scissors drive motor is driven by a signal from the control unit 2 . driving force. A general-purpose motor such as a stepping motor can be used as the scissors driving motor. The scissors for harvesting crops 10 are operated by receiving the driving force applied from the scissors drive section 6 . A specific configuration of the crop harvesting scissors 10 will be described below.

FIG. 2 is a plan view of the crop harvesting scissors 10 with the scissors portion 20 closed. FIG. 3 is a right side view of the crop harvesting scissors 10 with the scissors portion 20 closed. FIG. 4 is a left side view of the crop harvesting scissors 10 with the scissors portion 20 closed. FIG. 5 is a partially enlarged view of the crop harvesting scissors 10 showing the structure of the pivot portion. FIG. 6 is a plan view of the crop harvesting scissors 10 with the scissors portion 20 open.

As shown in FIGS. 2 to 4, the scissors 10 for harvesting crops receive driving force from a frame 11, a scissors section 20 for harvesting crops, and a scissors drive section 6 to operate the scissors section 20. It has an actuator section 30 for

Frame 11 has an upper frame 12 and a lower frame 13 . Each of upper frame 12 and lower frame 13 is provided at a predetermined distance. Between the upper frame 12 and the lower frame 13 are housed some of the components of the scissors section 20 and the actuator section 30 between the upper frame 12 and the lower frame 13 .

The upper frame 12 and the lower frame 13 are fixed to each other by an appropriate method such as fastening with fastening members such as screws or welding. Note that the upper frame 12 and the lower frame 13 may be directly fixed, or indirectly fixed via a connecting member (connecting plate) interposed between the upper frame 12 and the lower frame 13. good too.

Further, the opposing surfaces of the upper frame 12 and the lower frame 13, that is, the lower surface 12a of the upper frame 12 and the upper surface 13a of the lower frame 13 are parallel and smooth surfaces (flat surfaces). be. In this embodiment, each of the upper frame 12 and the lower frame 13 is a plate-like member, and each of the lower surface 12a of the upper frame 12 and the upper surface 13a of the lower frame 13 is substantially horizontal.

Furthermore, at least one of the upper frame 12 and the lower frame 13 is a reinforcing member having high wear resistance and high hardness (high strength), and is, for example, a hardened steel material (quenched steel plate). In this embodiment, the upper frame 12 is the reinforcing member.

The scissors part 20 has a first scissors body 21 and a second scissors body 22 . Each of the first scissors body 21 and the second scissors body 22 is made of metal and formed in a plate shape extending in the front-rear direction. In addition, the first scissors body 21 and the second scissors body 22 are arranged vertically (in the thickness direction of the first scissors body 21 and the second scissors body 22) at substantially the center in the longitudinal direction (front-rear direction) of each other's rear surfaces ( It is arranged so that the surface opposite to the blade surface (that is, the mating surface) overlaps.

In this embodiment, the first scissors body 21 is arranged on the upper side and the second scissors body 22 is arranged on the lower side in the vertical direction (perpendicular direction to the paper surface of FIG. 2 or the horizontal direction of the paper surface of FIG. 3). It is That is, the first scissors body 21 and the second scissors body 22 are arranged so that the lower surface of the first scissors body 21 and the upper surface of the second scissors body 22 are aligned. The upper surface of the second scissors body 22 serves as a mating surface. Therefore, in the present embodiment, the mating surface side viewed from the first scissors body 21 is the lower surface side (lower side), and the mating surface side viewed from the second scissors body 22 is the upper surface side (upper side). It's about.

The first scissors body 21 has a first blade portion 21a on one longitudinal end side (front end side) and a first handle portion 21b on the other longitudinal end side (rear end side). The second scissors body 22 has a second blade portion 22a on one end side (front end side) in the longitudinal direction, and a second handle portion 22b on the other end side (rear end side).

Further, although not shown, a through hole (rotary support hole) is formed between the first blade portion 21a and the first handle portion 21b of the first scissors body 21 (the center in the front-rear direction). A through hole (rotary support hole) is also formed between the second blade portion 22a and the second handle portion 22b of the scissors body 22 (at the center in the front-rear direction).

A cylindrical or columnar shaft member 23 attached to the frame 11 is inserted through the shaft support hole of the first scissors body 21 and the shaft support hole of the second scissors body 22 . The axial direction (axial direction) of the shaft member 23 is the vertical direction (thickness direction of the first scissors body 21 and the second scissors body 22).

The first scissors body 21 and the second scissors body 22 are rotatably connected about the axis of the shaft member 23 . That is, the first scissors body 21 and the second scissors body 22 are provided rotatably around an axis extending vertically.

Further, as shown in FIGS. 3 to 5, the first scissors body 21 and the second scissors body 21 and the second scissors body 21 are provided at a portion (a shaft supporting portion) where the first scissors body 21 and the second scissors body 22 are supported by the shaft member 23. An urging member 23a is provided to urge each of the scissors 22 toward the mating surfaces (the first scissors body 21 and the second scissors body 22 push each other). The biasing member 23 a is attached to the upper surface of the lower frame 13 and provided between the second scissors body 22 and the annular member 13 b through which the shaft member 23 is inserted. In this embodiment, the shaft member 23 is a bolt, and a first nut 23b and a second nut 23c attached to the tip of the shaft member 23 cause the biasing member 23a to move between the first scissors body 21 and the second scissors body 22. , and the lower frame 13 so as to be sandwiched therebetween.

As shown in FIG. 5, the biasing member 23a has a closed annular elastic body (annular elastic body) having a plurality of circumferentially arranged peaks and valleys between the peaks. The annular elastic body is, for example, a wave spring in which a plurality of troughs and a plurality of peaks are alternately provided with amplitude along the axial direction in a plurality of stages of windings made of a wire wound in a spiral shape. The wire that constitutes the wave spring has a rectangular cross-sectional shape that is long in the radial direction and is made of a metal material.

By using the urging member 23a having such a configuration, the mutual pressing force of the first scissors body 21 and the second scissors body 22 can be kept constant. In addition, there is no need to adjust the pressing forces of the first scissors body 21 and the second scissors body 22 when assembling the scissors part 20, and the assembly work of the scissors part 20 is simplified. be. Furthermore, even if members such as the first scissors body 21, the second scissors body 22 and the shaft member 23 wear, the mutual pressing force of the first scissors body 21 and the second scissors body 22 can be kept constant, In addition, rattling due to wear of members can be prevented.

As shown in FIGS. 2 to 4 and 6, each of the first scissors body 21 and the second scissors body 22 has a substantially elongated plate-like shape, and is bent in the width direction around a shaft support (shaft member 23). It has a bent (curved) shape, in other words, a shape like a boomerang. Specifically, in the first scissors body 21, the first blade portion 21a and the first handle portion 21b are bent at an obtuse angle so that the first cutting portion 21c side is on the inside of the bend. In the second scissors body 22, the second blade portion 22a and the second handle portion 22b are bent at an obtuse angle so that the second cutting portion 22c side is on the inner side of the bend. The bending directions of the first scissors body 21 and the second scissors body 22 are opposite left and right, and the angle formed by the first blade portion 21a and the first handle portion 21b and the angle formed by the second blade portion 22a and the second handle It is almost the same angle as the angle formed by the portion 22b.

Further, as shown in FIG. 6, the shaft member 23 is located on the side of the first scissors body 21 by a distance L1 from the extension line of the blade line of the first scissors body 21, and is located closer to the blade line of the second scissors body 22. is positioned on the second scissors body 22 side by a distance L1 from the extension line of . The shaft member 34a of the first handle 21b is located on the opposite side of the extension line of the blade line 21e of the first blade 21a by a distance L2 when viewed from the first blade 21a. The shaft member 35a of 22b is positioned on the other side by a distance L2 from the extended line of the blade line 22e of the second blade portion 22a when viewed from the second blade portion 22a. As a result, the twisting action via the shaft member 34a acts more directly on the blade line 21e of the first blade portion 21a in the thickness direction of the blade, and the twisting action via the shaft member 35a acts on the blade line 22e of the second blade portion 22a. acts more directly in the thickness direction of the blade. Note that the distance L2 is longer than the distance L1, and is preferably longer than the distance L1 by two times or more. As a result, the twisting action can be exhibited to a greater extent.

However, in a state in which the scissors 20 are closed (a state in which the first blade 21a and the second blade 22a overlap), the first handle 21b moves toward the second blade 22a from the shaft support. The second handle 22b extends from the pivot toward the first blade 21a. That is, the first scissors body 21 and the second scissors body 22 are connected so as to intersect (replace) left and right at the pivot portion. Therefore, it can be said that the shaft member 23 cross-connects the first scissors body 21 and the second scissors body 22 .

The direction in which the first blade portion 21a faces the second blade portion 22a (the second scissors body 22) (facing direction), that is, the closing direction of the first blade portion 21a and the second blade portion 22a (the closing direction of the scissors portion 20) ) is formed on the side (tip edge) of the second blade portion 22a, and a second cutting portion 22c is formed on the side (tip edge) of the second blade portion 22a in the closing direction.

Each of the first cutting portion 21c and the second cutting portion 22c is sharply formed so that the thickness decreases from the central portion in the opening/closing direction toward the end portions in the closing direction. Specifically, in the first cut portion 21c and the second cut portion 22c, the mutual mating surfaces (rear surfaces) are smooth surfaces (substantially perpendicular or horizontal to the axial direction of the shaft member 23) or slightly inner in the width direction. Although the back ski surface is concave, the surface (blade surface) on the opposite side of the mating surface, that is, the upper surface of the first cutting portion 21c and the lower surface of the second cutting portion 22c are separated from the central portion in the opening/closing direction. It forms an inclined surface that inclines toward the mating surface side toward the end in the closing direction.

When the scissors part 20 is closed from the open state, the first cutting part 21c (first blade part 21a) and the second cutting part 22c (second blade part 22a) cut the stem or stem of the crop. It can be cut by pinching the peduncle. That is, the first cutting portion 21c (first blade portion 21a) and the second cutting portion 22c (second blade portion 22a) interact with each other as the scissors portion 20 is opened and closed to cut the stems or fruit stalks of crops. function as a cutting scissors section capable of cutting the object to be cut.

As shown in FIG. 2, when the scissors 20 are completely closed, the tip edge (blade) of the first cutting portion 21c and the tip edge (blade) of the second cutting portion 22c overlap each other. state. That is, the first cut portion 21c and the second cut portion 22c overlap vertically (thickness direction) when the scissors portion 20 is closed.

FIG. 7 is a right side view of the crop harvesting scissors 10 showing the configuration of the first blade portion 21a and the second blade portion 22a. FIG. 8 is a left side view of the crop harvesting scissors 10 showing the configuration of the first blade portion 21a. FIG. 9 is a plan view of the crop harvesting scissors 10 showing the configuration of the first blade portion 21a. FIG. 10 is an explanatory diagram showing a state in which a part of the object to be cut is sandwiched between the scissors 20. As shown in FIG. FIG. 11 is an explanatory view showing the state of the crop harvesting scissors 10 when the scissors portion 20 is closed. 12 is an end view taken along line AA of FIG. 2. FIG.
As shown in FIGS. 2 to 4, 6 to 8, etc., the first scissors body 21 is provided with a first clamping body 21d, and the second scissors body 22 is provided with a second clamping body 22d.

21 d of 1st holding bodies are formed so that it may extend in the front-back direction along the 1st blade part 21a, and it rotates interlockingly with the 1st blade part 21a. In this embodiment, the first clamping body 21d is attached to the first blade portion 21a (the first scissors body 21) by a fastening member such as a screw, and rotates integrally with the first blade portion 21a.

22 d of 2nd holding bodies are formed so that it may extend in the front-back direction along the 2nd blade part 22a, and it rotates interlockingly with the 2nd blade part 22a. In this embodiment, the second clamping body 22d is attached to the second blade portion 22a (second scissors body 22) by a fastening member such as a screw, and rotates integrally with the second blade portion 22a. As shown in FIG. 2, when the scissors 20 are completely closed, the surfaces of the first clamping body 21d and the second clamping body 22d facing each other are concave. The projections correspond to each other, and the whole abuts or approaches.

The first clamping body 21 d is arranged below the first scissors body 21 , and the second clamping body 22 d is arranged below the second scissors body 22 . Normally, the part of the fruit to be harvested (harvested object) is positioned below the stem or fruit stalk of the crop, so the first clamping body 21d and the second clamping body 22d are arranged so that the first blade portion 21a and the second blade portion 21a When the blade portion 22a is closed, it is positioned between the harvesting object and the first blade portion 21a and the second blade portion 22a (cutting scissors portion).

However, as shown in FIGS. 6 and 10, the tip edge of the first clamping body 21d is in a direction ( (opening direction of the scissors 20). Further, the tip edge of the second holding body 22d is located in the direction in which the distance between the first holding body 21d and the second holding body 22d is wider than the tip edge of the second blade portion 22a.

Therefore, when cutting the stalk or fruit stalk of a crop, which is the object to be cut, the first blade portion 21a and the second blade portion 22a cut before the first clamping body 21d and the second clamping body 22d. It hits the object (first hit). Therefore, it is possible to prevent the first blade portion 21a and the second blade portion 22a from not being completely closed due to the first clamping member 21d and the second clamping member 22d coming into contact with the cutting object first.

Concavities and convexities are provided on the opposing surfaces of the first clamping body 21d and the second clamping body 22d. Therefore, when the stem or peduncle of the crop is pinched by the first clamping body 21d and the second clamping body 22d, it is possible to prevent the stalk or peduncle of the crop from escaping to the tip side.

Specifically, grooves G1 and G2 (concave grooves) extending in the vertical direction (the thickness direction of the first scissors body 21 and the second scissors body 22) are provided on the opposing surfaces of the first clamping body 21d and the second clamping body 22d. ) and protrusions P1 and P2 (convex) are alternately arranged in the front-rear direction (the longitudinal direction of the first clamping body 21d and the second clamping body 22d, that is, the blade line direction). The protrusions P1 and P2 are formed to protrude in the left-right direction (the width direction of the first scissors body 21 and the second scissors body 22), and the grooves G1 and G2 are formed in the left-right direction (the first scissors body 21 and the second scissors body 22). 22 width direction). Further, the grooves and projections formed in the first clamping body 21d and the second clamping body 22d are arranged so as to mesh with the mating grooves and grooves. Therefore, when the scissors portion 20 is closed, the surfaces of the first clamping body 21d and the second clamping body 22d are in close contact with each other.

Therefore, when the scissors part 20 is closed, the distance between the first clamping body 21d and the second clamping body 22d is narrowed, so that the stem or fruit stem of the crop is clamped by the first clamping body 21d and the second clamping body 22d. Is possible. Therefore, even after the stem or peduncle of the crop is cut, the stalk or peduncle of the crop is clamped by the first clamping member 21d and the second clamping member 22d. That is, the first clamping body 21d and the second clamping body 22d function as clamping parts capable of clamping the stem or fruit stalk of the crop.

Further, as shown in FIG. 8, the first holding body 21d and the first blade portion 21a are spaced apart in the vertical direction (thickness direction of the first holding body 21d and the second holding body 22d). The distance between the first holding member 21d and the first blade portion 21a is set to be at least greater than the thickness of the second blade portion 22a (more than the thickness of the second blade portion 22a). Therefore, when the scissors 20 are completely closed, the second blade 22a enters the gap between the first holding member 21d and the first blade 21a as shown in FIG.

Further, a first elastic deformation portion is provided for displacing a part of the first holding body 21d on the tip side in a direction in which the distance between the first holding body 21d and the second holding body 22d is widened. The first elastically deforming portion may be, for example, the first clamping body 21d itself formed of an elastically deformable material, or an elastically deforming member that attaches the first clamping body 21d to the first blade portion 21a. .

In this embodiment, as shown in FIGS. 6 to 10, the first elastically deforming portion is formed of a spring material (spring steel) such as high-carbon steel, alloy steel, or stainless steel, and is elastically deformable by the support plate 24. It is configured. The support plate 24 attaches the first holding member 21d to the first blade portion 21a.

The support plate 24 is a plate member having an L-shaped cross section. One surface (upper surface portion) 24c covers the upper surface of the first blade portion 21a, and the other surface (side surface portion) 24d covers the first holding member 21d. cover the outer surface. The support plate 24 is attached to the first blade portion 21a (the first scissors body 21) at the upper surface portion 24c, and is attached to the first holding member 21d at the side surface portion 24d. That is, the upper surface portion 24c of the support plate 24 functions as a first scissors body side fixing portion fixed to the first scissors body 21, and the side surface portion 24d of the support plate 24 functions as the first scissors body side fixing portion fixed to the first clamping body 21d. It functions as a holder-side fixing part. Further, the support plate 24 is attached to the first blade portion 21a (the first scissors body 21) and supports (regulates) the outer surface of the first clamping body 21d.

However, as shown in FIG. 8, the support plate 24 is connected to the first blade portion 21a (see FIG. 9) by a fastening member 25 (see FIG. 9) such as a screw through a through hole 24b (see FIG. 9) formed in the upper surface portion 24c. It is fixed to the first scissors body 21). The through hole 24b is an elongated hole extending in the opening/closing direction of the first blade portion 21a (the rotation direction of the first scissors body 21). Therefore, the mounting position of the support plate 24, that is, the first clamping body 21d can be adjusted in the rotating direction of the first scissors body 21 (the opening and closing direction of the first blade portion 21a). The first holding member 21d is attached to a side surface portion 24d (see FIG. 9) of the support plate 24 by a fastening member 26 (see FIG. 9) such as a screw.

7 and 8, a slit 24a is formed between the upper surface portion 24c and the side surface portion 24d of the support plate 24. As shown in FIGS. The slit 24a is formed so as to extend in the front-rear direction (longitudinal direction of the first scissors body 21) on the distal end side of the first clamping body 21d. In other words, the support plate 24 has a connecting portion 24e positioned closer to the shaft member 23 (shaft support portion) on the crest side of the first blade portion 21a. The connecting portion 24e is located between the upper surface portion 24c and the side surface portion 24d, and functions also as an elastically deformable elastically deformable portion (first elastically deformable portion). The upper limit of the length of the connecting portion 24e in the front-rear direction (longitudinal direction of the first scissors body 21) is 84% or less of the length of the holding portion (first holding body 21d) in the longitudinal direction, preferably It is 70% or less, more preferably 42% or less. The lower limit of the length of the connecting portion 24e in the front-rear direction is 6% or more, preferably 11% or more, and more preferably 13% or more of the length of the holding portion in the longitudinal direction.

Furthermore, the slit 24a is formed above the upper end 21g of the first holding body 21d, or is formed so as to include the upper end 21g of the first holding body 21d in the vertical direction. That is, at least part of the slit 24a is located in the gap between the first holding body 21d and the first blade portion 21a. Therefore, the upper surface portion 24c and the side surface portion 24d are not connected to each other in the portion where the slit 24a is formed in the front-rear direction (the distal end side of the first holding body 21d), that is, in the portion other than the connecting portion 24e. and the side surface portion 24d each have a flat plate shape.

Therefore, the support plate 24 (side surface portion 24d) also functions as a leaf spring, and as shown in FIG. On the tip 21f side of the first gripping body 21d, when a force is applied to the first gripping body 21d toward the outer side surface (right side in the drawing), the tip 24f side of the side surface portion of the support plate 24 is first gripped together with the first gripping body 21d. It elastically deforms in the direction in which the distance between the body 21d and the second holding body 22d widens. That is, a portion of the first holding body 21d on the tip end side is elastically deformed in the direction in which the distance between the first holding body 21d and the second holding body 22d widens. Therefore, the support plate 24 also functions as a first elastic deformation portion for displacing a part of the tip side of the first clamping body 21d in the direction in which the distance between the first clamping body 21d and the second clamping body 22d widens.

In addition to the elastic deformation of the side surface portion of the support plate 24 itself, the tip of the first holding member 21d is deformed around the portion where the slit 24a is not formed in the support plate 24 (the portion where the upper surface portion and the side surface portion are connected). 21d rotates in the direction in which the distance between the first holding body 21d and the second holding body 22d widens. Therefore, a part of the first holding body 21d on the tip side is displaced in the direction in which the distance between the first holding body 21d and the second holding body 22d is widened.

The degree of elastic deformation of the support plate 24 changes according to the length of the slit 24a in the front-rear direction. Therefore, by adjusting the length of the slit 24a in the front-rear direction (in other words, adjusting the length of the connecting portion 24e in the front-rear direction) according to the thickness and hardness of the stem or fruit stalk of the crop, the support plate The degree of elastic deformation of 24 can be adjusted. Alternatively, the slit 24a may be omitted, and the lengths of the upper surface portion 24c and the side surface portion 24d of the support plate 24 in the front-rear direction may be the same length as the connecting portion 24e. Also in this case, by setting the length of the connecting portion 24e in the front-rear direction to be shorter than the length of the first holding member 21d in the front-rear direction, a portion of the first holding member 21d on the distal end side becomes the first holding member. 21d and the second clamping member 22d can be displaced in the direction in which the distance between them widens.

2 to 4 and 6, the actuator section 30 is mechanically connected to the scissors driving section 6, and has an input shaft 31 to which the rotational driving force applied from the scissors driving section 6 is inputted; It has a ball screw mechanism 32 mechanically connected to 31 and a toggle link mechanism 33 mechanically connected to the ball screw mechanism 32 .

The ball screw mechanism 32 is a mechanism that converts the rotational driving force input to the input shaft 31 into linear motion, and is arranged at the rear end portion of the actuator section 30 . The ball screw mechanism 32 has a screw shaft 32a, a nut 32b, a nut holder 32c, a front side bearing 32d, and a rear side bearing 32e.

The threaded shaft 32a has a cylindrical shape that is long in the front-rear direction and has a threaded portion formed on its outer periphery. The front side bearing 32 d and the rear side bearing 32 e are arranged on the axis of the screw shaft 32 a and fixed to the frame 11 . Both ends of the screw shaft 32a are not threaded. rotatably pivoted;

The rear end of the screw shaft 32a is connected (fixed) to the input shaft 31, so that when the input shaft 31 is rotated by the rotational driving force applied from the scissors driving unit 6, the screw shaft 32a is rotated. It rotates together with the input shaft 31 .

The nut 32b is formed in a substantially cylindrical shape, has a hollow interior, and has a threaded portion formed on its inner peripheral surface. The threaded portion of the nut 32b is engaged with the threaded portion of the threaded shaft 32a. The nut holder 32c is formed in a substantially rectangular parallelepiped shape elongated in the left-right direction, and the nut 32b is fitted in the center in the left-right direction. That is, the nut holder 32c is provided on the outer circumference of the nut 32b and fixed to the nut 32b so as to cover the outer circumference of the nut 32b.

At least one of the upper surface and the lower surface of the nut holder 32c is a smooth surface parallel to the axial direction of the screw shaft 32a. side sliding surface. Since it is the upper or lower surface of the substantially rectangular parallelepiped nut holder 32c, the sliding surface is a rectangular surface.

Further, of the frame 11, the opposing surface facing the nut holder 32c, that is, of the lower surface of the upper frame 12 and the upper surface of the lower frame 13, at least the surface facing the sliding surface of the nut holder 32c is screwed on the screw shaft 32a. becomes a smooth surface (guide surface) parallel to the axial direction of That is, either the upper frame 12 or the lower frame 13 serves as a guide plate having a guide surface. In this embodiment, the upper surface of the nut holder 32c serves as a sliding surface, and slides along the lower surface (guide surface) of the upper frame 12, which is a reinforcing member. In addition, when the lower frame 13 is a reinforcing member, the upper surface of the lower frame 13 may be used as a guide surface.

Further, in this embodiment, a low friction sheet 32f made of a low friction coefficient material such as resin is provided between the nut holder 32c and the guide surface (the lower surface of the upper frame 12). The low friction sheet 32f is attached to the upper surface of the nut holder 32c. That is, the nut holder 32c contacts the guide surface via the low friction sheet 32f. Therefore, strictly speaking, the surface of the low-friction sheet 32f serves as a sliding surface. Further, a lubricant such as lubricating oil is provided between the sliding surface of the low-friction sheet 32f and the guide surface (the lower surface of the upper frame 12).

The sliding surface on the nut holder 32c side and the guide surface on the frame 11 side abut against each other, so that the nut holder 32c does not rotate with respect to the frame 11 in the circumferential direction of the screw shaft 32a. Therefore, the threaded portion of the screw shaft 32a and the threaded portion of the nut 32b are screwed together so that the nut holder 32c moves back and forth in the longitudinal direction (axial direction) of the screw shaft 32a as the screw shaft 32a rotates forward and backward. A front cushion member 32g is provided on the front side of the nut holder 32c, and a rear cushion member 32h is provided on the rear side of the nut holder 32c. The front cushion member 32g and the rear cushion member 32h are made of a material such as rubber or resin. function as a shock absorbing member. In addition, it is fixed to the upper frame 12 and the lower frame 13 between the first handle 21b of the first scissors body 21 and the second handle 22b of the second scissors body 22 on the front side of the front side bearing 32d. When the first scissors body 21 and the second scissors body 22 move excessively in the closing direction, the strut 11a abuts against the first handle 21b and the second handle 22b to form a stopper. also functions as

As described above, in the present embodiment, rotation of the nut holder 32c is stopped and guided by surface contact between the sliding surface and the guide surface. The number of parts can be reduced and the configuration can be simplified.

The toggle link mechanism 33 is a link mechanism for transmitting the linear motion of the nut holder 32c to each of the first scissors body 21 and the second scissors body 22. placed behind. That is, the toggle link mechanism 33 is arranged between the ball screw mechanism 32 and the scissors portion 20 in the front-rear direction. The toggle link mechanism 33 has a first link member (first connecting member) 33a and a second link member (second connecting member) 33b.

Each of the first link member 33a and the second link member 33b is a rod-shaped or plate-shaped member. The first link member 33a connects the first handle portion 21b of the first scissors body 21 and the nut holder 32c. The second link member 33b connects the second handle 22b of the second scissors body 22 and the nut holder 32c.

Specifically, one end of the first link member 33a is rotatably supported by a shaft member 34a provided on the first handle 21b, and the other end is a shaft provided on the nut holder 32c. It is rotatably supported by the member 34b.

The second link member 33b has one end rotatably supported by a shaft member 35a provided on the second handle 22b, and the other end on a shaft member 35b provided on the nut holder 32c. It is rotatably pivoted.

However, the first link member 33a and the first handle portion 21b are bent at the portion supported by the shaft member 34a, and the second link member 33b and the second handle portion 22b are bent at the portion supported by the shaft member 35a. It becomes a bent form.

Further, the first link composed of the first link member 33a and the first handle 21b and the second link composed of the second link member 33b and the second handle 22b are arranged substantially laterally in plan view. arranged symmetrically.

When the nut holder 32c moves forward (advance), the space between the nut holder 32c and the scissors 20 in the front-rear direction narrows, and the angle formed by the first link member 33a and the first handle 21b and the second link member 33b and The angle formed by the second handle 22b becomes smaller. At this time, the rear end portion of the first handle portion 21b is applied with a forward force (the pressure of the first link member 33a and the second link member 33b) applied to the rear end portions of the first link member 33a and the second handle portion 22b. pressure) acts to rotate the first scissors body 21 and the second scissors body 22 in the opening direction (the first blade portion 21a and the second blade portion 22a are opened).

On the other hand, when the nut holder 32c moves rearward (backward), the distance between the nut holder 32c and the scissors portion 20 in the front-rear direction widens, and the angle between the first link member 33a and the first handle portion 21b and the second link member The angle formed by 33b and the second handle 22b increases. At this time, a rearward force (pulling force of the first link member 33a and the second link member 33b) acts on the rear end portion of the first handle portion 21b and the rear end portion of the second handle portion 22b. The scissors body 21 and the second scissors body 22 rotate in the closing direction (the first blade portion 21a and the second blade portion 22a close).

As described above, the nut holder 32c is moved back and forth by the rotational driving force applied from the scissors drive unit 6, and the first scissors body 21 and the second scissor body 22 are opened and closed in conjunction with the back and forth movement of the nut holder 32c. . Therefore, the first scissors body 21 and the second scissors body 22 can be opened and closed by controlling the rotation direction and the number of rotations of the scissors driving motor of the scissors driving section 6 .

The first link member 33a is connected to the mating surface side of the first handle 21b (lower surface of the first handle 21b), and the second link member 33b is connected to the mating surface side of the second handle 22b (second upper surface of the handle portion 22b).

Therefore, as shown in FIG. 11, when the first scissors body 21 and the second scissors body 22 are closed (the first blade portion 21a and the second blade portion 22a are closed), the first handle portion 21b is connected to the first link member It will be in a state of being pulled by 33a. At this time, in addition to the rearward force P, a vertical force (downward force in this embodiment) D acting on the mating surface side acts on the first handle portion 21b. That is, the first link member 33a and the shaft member 34a are biasing portions (first It also functions as an urging part). As a result, the first scissors body 21 is twisted (twisted) with the portion pivotally supported by the shaft member 23 serving as the fulcrum C. As shown in FIG. Therefore, the side of the first scissors body 21 opposite to the first handle portion 21b, ie, the first blade portion 21a, is subjected to a force T that causes the first cutting portion 21c to tilt (rotate) toward the mating surface.

Further, when the first scissors body 21 and the second scissors body 22 are closed (the first blade portion 21a and the second blade portion 22a are closed), the second handle portion 22b is pulled by the second link member 33b. . At this time, in addition to the rearward force P, a vertical force (upward force in this embodiment) U acting on the mating surface side acts on the second handle 22b. That is, the second link member 33b and the shaft member 35a are biasing portions (second It also functions as an urging part). As a result, the second scissors body 22 is twisted (twisted) in a direction opposite to the direction of the first scissors body 21 with the portion pivotally supported by the shaft member 23 serving as the fulcrum C. As shown in FIG. Therefore, on the opposite side of the second scissors body 22 to the second handle 22b, that is, on the second blade 22a, a force T acts to tilt (rotate) the second cutting part 22c toward the mating surface.

As described above, since each of the first cutting portion 21c and the second cutting portion 22c is twisted (tilted) toward the mating surface side, the blade edges of the first cutting portion 21c and the second cutting portion 22c are at an angle. The cutting edges of the first cutting portion 21c and the cutting edge of the second cutting portion 22c are in point contact with each other. Therefore, it is possible to prevent the thin skin from entering between the first cut portion 21c and the second cut portion 22c, and the first cut portion 21c and the second cut portion 22c are brought into point contact to ensure that the stem or peduncle of the crop is securely cut. can be cut to In addition, since it is not necessary to bend (warp) the first scissors body 21 and the second scissors body 22 (the first blade portion 21a and the second blade portion 22a), the first scissors body 21 and the second scissors body 22 (The first blade portion 21a and the second blade portion 22a) can be flat plate-shaped, and the first scissors body 21 and the second scissors body 22 can be manufactured with high accuracy. In this embodiment, at least the first blade portion 21a and the second blade portion 22a are not warped (not curved), and are formed in a flat plate shape so that their mating surfaces are flat. .

In addition, since a portion of the first clamping body 21d on the tip end side is displaced in the direction in which the distance between the first clamping body 21d and the second clamping body 22d widens, the first clamping body 21d and the second clamping body 22d can be used for crops. By clamping the stems or stalks with an appropriate force (clamping force), impressions remaining on the stalks or stalks of the crop can be suppressed as much as possible, and crushing of the stalks or stalks of the crop can be prevented. In addition, it is possible to reliably hold the crops and suppress or prevent the crops from falling.

Further, a support plate 24 that is fixed to the first scissors body 21, supports the outer surface of the first clamping body 21d, and is elastically deformable is further provided. Since a slit 24a extending in the longitudinal direction of the first scissors body 21 is formed on the tip side of the first clamping body 21d, it is possible to displace a part of the tip side of the first clamping body 21d. The degree of displacement of the first holding member 21d can be adjusted by adjusting the length of the slit 24a in the front-rear direction according to the thickness and hardness of the stem or stalk of the crop.

Furthermore, in a state in which the first holding body 21d and the first blade portion 21a are spaced apart in the thickness direction of the first holding body 21d and the second holding body 22d and the scissors portion 20 is closed, the first holding body Since the second blade portion 22a enters into the gap between the body 21d and the first blade portion 21a, the tip edge (blade edge) of the first cutting portion 21c and the tip edge (blade edge) of the second cutting portion 22c can increase the distance over which the two overlap, making it easier to cut the stem or peduncle of the crop. In addition, the size (width) in the opening/closing direction of the first blade portion 21a and the second blade portion 22a can be made compact. That is, even if the widths of the first blade portion 21a and the second blade portion 22a are narrow, the first holding member 21d and the second holding member 22d can be provided.

Regarding this invention and embodiments, the cutting scissors part of this invention corresponds to the first cutting part 21c (first blade part 21a) and the second cutting part 22c (second blade part 22a) of the embodiment, and so on. The clamping portion corresponds to the first clamping body 21d and the second clamping body 22d, but the present invention is not limited to this embodiment, and various other embodiments are possible. Also, the specific configurations and the like given in the above-described embodiments are examples, and can be changed as appropriate according to actual products.

For example, in the above embodiment, the toggle link mechanism 33 is operated using the ball screw mechanism 32 in the actuator section 30, but the toggle link mechanism 33 may be operated by compressed air. In addition, any mechanism that can move linearly can be used as an operation mechanism for opening and closing the first scissors body 21 and the second scissors body 22 . Even in this way, the same effects as in the above embodiment can be obtained.

In addition to the configuration of the above embodiment, the side surface portion 24d of the support plate 24 may additionally be provided with an elastic deformation allowance portion (second elastic deformation allowance portion). FIG. 13 is an explanatory diagram showing the configuration of the crop harvesting scissors 10 in the modified example. Specifically, a curved portion 24g that functions as an elastic deformation allowance portion is provided on the side portion 24d. For example, the curved portion 24g has a single curved shape that is U-shaped in plan view. The curved portion 24g may have a single curved shape, or may have a wavy shape including a plurality of curved shapes. By doing so, the tip side of the side surface portion 24d is largely elastically deformed, and as a result, a part of the tip side of the first holding body 21d is largely displaced. Therefore, the spring property is effectively exhibited, and the first clamping body 21d and the second clamping body 22d exert an appropriate clamping force against the stem or fruit peduncle of the crop, leaving impressions on the stem or peduncle of the crop. can be suppressed as much as possible, and crushing of stems or stalks of crops can be prevented. In order to obtain such an effect efficiently, it is preferable that the curved portion 24g be positioned closer to the connecting portion 24e than to the distal end 24f. When the curved portion 24g is located on the connecting portion 24e side, the distance between the distal end side of the first clamping body 21d and the curved portion 24g, which is the starting point of elastic deformation, becomes longer, and the distal end side of the side surface portion 24d and the first clamping body This is because the distal end side of 21d is largely displaced, and the spring property is exhibited more effectively.

Furthermore, in the above-described embodiment, a portion of the first clamping body 21d on the distal end side is displaced in the direction in which the distance between the first clamping body 21d and the second clamping body 22d widens. Alternatively, or In addition to this, a part of the tip side of the second clamping body 22d may be displaced in the direction in which the distance between the first clamping body 21d and the second clamping body 22d widens. That is, a second elastic deformation permitting portion may be provided that allows a part of the tip side of the second clamping body 22d to be elastically deformed in the direction in which the distance between the first clamping body 21d and the second clamping body 22d widens. . For example, as shown in FIGS. 14A and 14B, the crop harvesting scissors 10 attach the second clamping body 22d to the second blade portion 22a in order to elastically deform a part of the tip side of the second clamping body 22d. It may have a support plate 27 for. The support plate 27 is made of an elastically deformable material like the support plate 27 . The support plate 27 is a plate member having an L-shaped cross section, one surface (upper surface portion) 27c covers the lower surface of the second blade portion 22a, and the other surface (side surface portion) 27d serves as the second clamping member. 22d covers the outer surface. The support plate 27 is attached to the second blade portion 22a (second scissors body 22) at the upper surface portion 27c (second scissors body side fixed portion), and is attached to the second clamping body 22d at the side surface portion 27d (second scissors body 22). Clamping body side fixed part). That is, the support plate 27 is attached to the second blade portion 22a (the second scissors body 22) and supports (regulates) the outer surface of the second clamping body 22d. A slit 27a is formed between the upper surface portion 27c and the side surface portion 27d of the support plate 27 . The slit 27a is formed so as to extend in the front-rear direction (longitudinal direction of the second scissors body 22) on the distal end side of the second clamping body 22d. The length of the slit 27a in the front-rear direction is 20 to 50% of the length of the support plate 27 in the front-rear direction. In addition, the support plate 27 has a connecting portion 27e located on the side closer to the shaft member 23 (shaft supporting portion) on the crest side of the second blade portion 22a. Further, the slit 27a is formed above the upper end of the second holding body 22d, or formed so as to include the upper end of the second holding body 22d in the vertical direction. That is, at least part of the slit 27a is located above the second holding member 22d. Therefore, the upper surface portion 27c and the side surface portion 27d are not connected to each other in the portion where the slit 27a is formed in the front-rear direction (the distal end side of the second holding member 22d), that is, in the portion other than the connecting portion 27e. The connecting portion 27e or the entire support plate 27 is located between the upper surface portion 27c and the side surface portion 27d and functions as a second elastic deformation allowance portion.

In addition to the configuration of the above embodiment, at least one of the first holding member 21d and the second holding member 22d may be made of an elastically deformable material (elastic material) such as rubber or elastomer resin. good. In this way, impressions remaining on the stem or peduncle of the crop sandwiched between the first clamping member 21d and the second clamping member 22d are suppressed as much as possible, and crushing of the stalk or peduncle of the crop can be prevented. can be done. In addition, the first clamping body 21d and the second clamping body 22d and the stalk or peduncle of the crop become less slippery, and the stalk or peduncle of the crop can be reliably clamped by the first clamping body 21d and the second clamping body 22d. be able to. In particular, if both the first clamping body 21d and the second clamping body 22d are made of an elastic material, it is possible to further suppress impressions remaining on the stems or stalks of the crops, The fruit stalk can be clamped more reliably.

Furthermore, in the above embodiment, the scissors part 20 has a so-called double-opening structure in which both the first scissors body 21 and the second scissors body 22 are movable, but the scissors part 20 may have a single-opening structure. In this case, one of the first scissors body 21 and the second scissors body 22 serves as a fixed blade fixed to the frame 11, and the other serves as a movable blade. Also, in this case, only the movable blades need to be biased toward the mating surfaces when the scissors 20 are closed. Even with such a configuration, at least the movable blade tilts toward the mating surface side, so that the blade edges of the first cutting portion 21c and the second cutting portion 22c cross each other and come into point contact. . Therefore, similarly to the above-described embodiment, the first cutting portion 21c and the second cutting portion 22c can be brought into point contact to reliably cut the stem or fruit stem of the crop.

INDUSTRIAL APPLICABILITY The present invention can be used in the industry of crop harvesting scissors used for harvesting crops such as fruit vegetables and leafy vegetables.

DESCRIPTION OF SYMBOLS 1...Automatic harvesting device 10...Scissors for harvesting crops 11...Frame 20...Scissors part 21...First scissors body 21a...First blade part 21b...First handle 22...Second scissors body 22a...Second blade part 22b... Second handle portion 30 Actuator portion 31 Input shaft 32 Ball screw mechanism 33 Toggle link mechanism 33a First link member 33b Second link member

The present invention provides a first scissors body having a first blade portion on one end side and a first handle portion on the other end side, and a second scissors body having a second blade portion on the one end side and a second handle portion on the other end side. Two scissors bodies are rotatably attached by a shaft member, and a cutting scissors part capable of cutting the stem or peduncle of a crop by closing the first blade part and the second blade part, and the first blade part. A first holding body provided along and rotating in conjunction with the first blade, and a second holding body provided along the second blade and rotating in conjunction with the second blade. When the first blade and the second blade are closed, they are positioned between the crop and the cutting scissors. A first elastic deformation for displacing a portion of a distal end side of the first holding member in a direction in which a holding portion capable of holding the stem or the stem, the first holding member, and the second holding member widens. The scissors for harvesting crops are provided with a part.

Claims (5)

A first scissors body having a first blade on one end and a first handle on the other end and a second scissors body having a second blade on the one end and a second handle on the other end a cutting scissors portion rotatably attached by a shaft member and capable of cutting stems or fruit stalks of crops by closing the first blade portion and the second blade portion;
A first holding body provided along the first blade portion and rotating in conjunction with the first blade portion, and a first holding member provided along the second blade portion and rotating in conjunction with the second blade portion a second clamping body positioned between the crop and the cutting scissors when the first blade and the second blade are closed; a pinching portion capable of pinching the stem or the stem by narrowing the distance between
Crop harvesting scissors comprising a first elastically deformable portion for displacing a part of the tip side of the first clamping body in a direction in which the distance between the first clamping body and the second clamping body widens. further comprising a support plate having a first scissors-body-side fixing portion fixed to the first scissors-body and a first clamping-body-side fixing portion fixed to the first clamping body,
The first elastically deformable portion is positioned between the first scissors-side fixed portion and the first clamping-side fixed portion of the support plate, and is composed of an elastically deformable elastic deformation permitting portion,
The elastic deformation allowance portion is shorter than the length of the first blade portion in the blade line direction of the first clamping body, and is located on the peak side of the first blade portion closer to the shaft member. The scissors for harvesting crops according to 1. The first scissors-side fixing part and the first clamping body-side fixing part are arranged so that the first blade part and the first clamping body are spaced apart by a thickness equal to or greater than the thickness of the second blade part. 3. The scissors for harvesting crops according to claim 2, wherein the first clamping member and the first clamping member are fixed. The first clamping body side fixing portion is a portion of the support plate that contacts the first clamping body and has a through hole formed therein,
The support plate is fixed to the first scissors body by a fastening member penetrating the through hole of the first clamping body side fixing part,
The scissors for harvesting crops according to claim 3, wherein the through hole is an elongated hole extending in the opening/closing direction of the first blade. 5. Any one of claims 1 to 4, further comprising a second elastic deformation portion for displacing a portion of the tip side of the second clamping body in a direction in which the distance between the first clamping body and the second clamping body widens. 1. Crop harvesting scissors according to claim 1.

Images