Cutting tool

Abstract

The present invention provides a cutting tool capable of cutting multiple objects simultaneously. [Solution] The cutting tool of the present invention comprises a first arm portion and a second arm portion that are rotatably connected in overlapping regions that intersect and overlap; a first cutting portion provided at the tip of the first arm portion and having a first blade and a second blade arranged in the direction of overlap in the overlapping region, and a first housing portion interposed between the first blade and the second blade; a second cutting portion provided at the tip of the second arm portion and having a third blade and a fourth blade arranged in the direction of overlap in the overlapping region, and a second housing portion interposed between the third blade and the fourth blade; when the first arm portion and the second arm portion rotate to approach each other, the first blade and the third blade approach each other to cut the first object, and at the same time, the second blade and the fourth blade approach each other to cut the second object; and when there is an object to be cut between the first object and the second object, the first housing portion and the second housing portion are configured to house the object to be cut and retracted.

Description

Technical Field

[0001] The present invention relates to a cutting tool.

Background Art

[0002] Grapes are cultivated using grape trellises that form a ceiling part by assembling wires in a grid pattern. In the grape cultivation process, grape pruning is performed using pruning shears for the purpose of improving the quality of grape berries. As such pruning shears, for example, a structure has been proposed in which the blade edges close to cut and prune an object to be cut when the handles are squeezed, and the handles and blade edges are opened by the repulsive force of a spring when the squeezed palm is released (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of Invention

Problems to be Solved by the Invention

[0004] With the pruning shears of Patent Document 1, in principle, only one grape can be cut in a single cutting operation, but it is also possible to prune multiple grapes at the same time by increasing the size of the pruning shears. However, when attempting to prune two adjacent grapes on opposite sides of a wire of a grape trellis, the wire becomes an obstacle, making it difficult to prune the two grapes located on opposite sides of the wire.

[0005] In view of such circumstances, the present invention intends to provide a cutting tool capable of cutting a plurality of objects to be cut at the same time.

Means for Solving the Problems

[0006] The cutting tool of the present invention comprises a first arm portion and a second arm portion that are rotatably connected in an overlapping region that intersects and overlaps, a first cutting portion provided at the tip of the first arm portion and having a first blade, a second blade and a first housing portion, and a second cutting portion provided at the tip of the second arm portion and having a third blade, a fourth blade and a second housing portion, wherein the first blade and the second blade are aligned in the overlapping direction in which the first arm portion and the second arm portion overlap in the overlapping region with the first housing portion interposed between them, the third blade and the fourth blade are aligned in the overlapping direction with the second housing portion interposed between them, the first blade and the third blade face each other in the opposing direction of the first cutting portion and the second cutting portion, and the first arm portion and the front When the first arm portion and the second arm portion rotate so that the space between the second arm portion closes, the first blade and the third blade approach each other and are configured to cut a first object interposed between the first blade and the third blade; the second blade and the fourth blade face each other in the opposing direction, and when the first arm portion and the second arm portion rotate so that the space between the first arm portion and the second arm portion closes, the second blade and the fourth blade approach each other and are configured to cut a second object interposed between the second blade and the fourth blade; and when a non-cutting object is interposed between the first object and the second object, the first housing portion and the second housing portion are configured to accommodate the non-cutting object.The cutting tool of the present invention comprises a first arm portion and a second arm portion that are rotatably connected in an overlapping region where they intersect and overlap; a first cutting portion provided at the tip of the first arm portion and having a first blade, a second blade and a first housing portion; and a second cutting portion provided at the tip of the second arm portion and having a third blade, a fourth blade and a second housing portion, wherein the first blade, the first housing portion and the second blade are arranged in that order in the overlapping direction in which the first arm portion and the second arm portion overlap in the overlapping region; the third blade, the second housing portion and the fourth blade are arranged in that order in the overlapping direction; the first blade and the third blade face each other in the opposing direction of the first cutting portion and the second cutting portion; and the first arm portion and the second housing portion When the first arm portion and the second arm portion rotate so that the space between the arm portions closes, the first blade and the third blade approach each other and are configured to cut a first object interposed between the first blade and the third blade; the second blade and the fourth blade face each other in the opposing direction, and when the first arm portion and the second arm portion rotate so that the space between the first arm portion and the second arm portion closes, the second blade and the fourth blade approach each other and are configured to cut a second object interposed between the second blade and the fourth blade; and when a non-cutting object is interposed between the first object and the second object, the first housing portion and the second housing portion are configured to accommodate the non-cutting object.

[0007] In the cutting tool of the present invention, when the direction in which the tip of the first arm portion and the first cutting portion are aligned is defined as the first alignment direction, and the direction perpendicular to both the first alignment direction and the overlapping direction is defined as the first extension direction of the first housing portion, the tip of the first housing portion in the first alignment direction and both ends of the first housing portion in the first extension direction are open to the outside, and when the direction in which the tip of the second arm portion and the second cutting portion are aligned is defined as the second alignment direction, and the direction perpendicular to both the second alignment direction and the overlapping direction is defined as the second extension direction of the second housing portion, the tip of the second housing portion in the second alignment direction and both ends of the second housing portion in the second extension direction are open to the outside.

[0008] The cutting tool of the present invention is characterized in that the first housing portion is open to the outside at both the tip of the first housing portion in the first arrangement direction and at both ends of the first housing portion in the first extending direction, and is configured as a groove recessed in the first arrangement direction between the first blade and the second blade, and the second housing portion is open to the outside at both the tip of the second housing portion in the second arrangement direction and at both ends of the second housing portion in the second extending direction, and is configured as a groove recessed in the second arrangement direction between the third blade and the fourth blade.

[0009] The cutting tool of the present invention is characterized in that the first blade and the second blade are positioned offset toward the second cutting portion with respect to the tip of the first arm portion, and the third blade and the fourth blade are positioned offset toward the first cutting portion with respect to the tip of the second arm portion.

[0010] In the cutting tool of the present invention, the first blade, the second blade, the third blade, and the fourth blade are characterized in that they extend parallel to the direction of overlap.

[0011] In the cutting tool of the present invention, the first blade and the second blade extend in the first arrangement direction, The third and fourth blades are characterized by extending in the second alignment direction. [Effects of the Invention]

[0012] The cutting tool of the present invention offers the excellent advantage of being able to cut multiple objects simultaneously. [Brief explanation of the drawing]

[0013] [Figure 1] This is a front view of the cutting tool in the open state according to the first embodiment of the present invention. [Figure 2] This is a front view of the cutting tool in the closed state according to the first embodiment of the present invention. [Figure 3] (A) is a top view of the cutting tool in the open state according to the first embodiment of the present invention. (B) is a top view of the cutting tool in the closed state according to the first embodiment of the present invention. [Figure 4] (A) is a front view of the first cutting portion of the cutting tool in the first embodiment of the present invention. (B) is a rear view of the first cutting portion of the cutting tool in the first embodiment of the present invention. [Figure 5] This is a plan view showing a grape trellis and the grapes grown there. [Figure 6] (A) and (B) are plan views showing, in chronological order, the cutting of a first object and a second object using the cutting tool according to the first embodiment of the present invention. [Figure 7] (A) is a front view of the cutting tool in the open state according to the second embodiment of the present invention. (B) is a rear view of the cutting tool according to the second embodiment of the present invention. [Figure 8] This figure shows the third cutting section (fourth cutting section) of the cutting tool in the closed state according to the second embodiment of the present invention. [Figure 9] This is a front view of a cutting tool according to a second embodiment of the present invention. [Modes for carrying out the invention]

[0014] Embodiments of the present invention will be described below with reference to the accompanying drawings. The accompanying drawings are examples of embodiments of the invention, and parts with the same reference numerals in the drawings represent the same object. Furthermore, the shapes and dimensional ratios of the parts in each drawing are not necessarily accurate.

[0015] The cutting tool 1 according to the first embodiment of the present invention is mainly configured to be capable of simultaneously cutting a first object and a second object on both sides of a non-cut object, without cutting the central non-cut object, among the first object, the non-cut object that is not a cutting target, and the second object that are arranged in parallel in sequence. As shown in the grape trellis in Figure 5 and the grapes grown thereon, examples of the first object include a grape vine 900A. Examples of the second object include a grape vine 900B. Examples of the non-cut object include a linear body 910 assembled in a lattice shape that constitutes the ceiling portion of the grape trellis. The first object and the second object are not limited to grapes, and may be other plants. Further, the non-cut object is not limited to the linear body 910 of the grape trellis, and may be other objects interposed between the first object and the second object. The cutting tool 1 can be used for the purpose of pruning plants, and thus the cutting tool 1 may be configured as a plant pruning tool 1.

[0016] <Overall Configuration> As shown in Figure 1, the cutting tool 1 in the present embodiment includes a first arm portion 2, a second arm portion 3, a first cutting portion 4, a second cutting portion 5, and a biasing portion 6.

[0017] <First Arm Portion, Second Arm Portion> The first arm portion 2 and the second arm portion 3 will be described with reference to Figures 1 to 3. The first arm portion 2 and the second arm portion 3 each have an elongated rod-shaped member that can be gripped by a person. The cross-sectional shape perpendicular to the length direction of the rod-shaped member is not particularly limited, and examples thereof include a circle, an ellipse, an oblong, a quadrangle, and other polygons.

[0018] As shown in Figure 1, the first arm portion 2 and the second arm portion 3 have an overlapping region 10 that intersects midway and overlaps each other. The first arm portion 2 and the second arm portion 3 are rotatably connected at the overlapping region 10.

[0019] As shown in Figure 3, the connecting structure 11 of the first arm portion 2 and the second arm portion 3 includes a through hole 12 that penetrates the overlapping region 10 in the overlapping direction P where the first arm portion 2 and the second arm portion 3 overlap in the overlapping region 10, a shaft portion 13 positioned in the through hole 12 with its axial direction aligned with the overlapping direction P, and retaining portions 14A and 14B provided at both ends of the shaft portion 13.

[0020] The retaining parts 14A and 14B close the openings at both ends of the through hole 12, securing the shaft portion 13 inside the through hole 12 so that the shaft portion 13 does not detach from the through hole 12. The connecting structure 11 is configured so that the first arm portion 2 and the second arm portion 3 can rotate around the shaft portion 13.

[0021] As shown in Figure 1, the first arm section 2 has a first operating arm piece 20, a first overlapping arm piece 21, and a first cutting arm piece 22, which are arranged in that order in the extending direction of the first arm section 2 and are connected to each other. The second arm section 3 has a second operating arm piece 30, a second double-overlapping arm piece 31, and a second cutting arm piece 32, which are arranged in that order in the extending direction of the second arm section 3 and are connected to each other.

[0022] The first operating arm piece 20 and the second operating arm piece 30 are the parts of the cutting tool 1 that are grasped by the user and that receive operation from the user. The first overlapping arm piece 21 and the second overlapping arm piece 31 intersect and overlap each other to form an overlapping region 10.

[0023] The first cutting side arm piece 22 is connected to the first overlapping arm piece 21 at one end and to the first cutting section 4 at the other end. The second cutting side arm piece 32 is connected to the second double overlapping arm piece 31 at one end and to the second cutting section 5 at the other end.

[0024] As shown in Figures 1 and 2, when the first operating arm piece 20 and the second operating arm piece 30 are rotated so that the space between them closes, the first cutting arm piece 22 and the second cutting arm piece 32 also rotate in response to this rotation so that the space between them closes. On the other hand, when the first operating arm piece 20 and the second operating arm piece 30 are rotated so that the space between them opens, the first cutting arm piece 22 and the second cutting arm piece 32 also rotate in response to this rotation so that the space between them opens. The former is called the closing operation of the cutting tool 1, in which the first operating arm piece 20 and the second operating arm piece 30 move closer together, and the first cutting arm piece 22 and the second cutting arm piece 32 also move closer together in response. The latter is called the opening operation of the cutting tool 1, in which the first operating arm piece 20 and the second operating arm piece 30 move away from each other, and in conjunction with this, the first cutting arm piece 22 and the second cutting arm piece 32 also move away from each other. Furthermore, the state in Figure 2 where the space between the first operating arm piece 20 and the second operating arm piece 30 is completely closed is called the closed state. Also, the state in Figure 1 where the space between the first operating arm piece 20 and the second operating arm piece 30 is completely open is called the open state.

[0025] Furthermore, the first operating arm piece 20 and the second operating arm piece 30 each have a first stopper piece 20A and a second stopper piece 30A that restrict the degree to which the first operating arm piece 20 and the second operating arm piece 30 close (approach distance). The first stopper piece 20A forms a section of the first operating arm piece 20 that connects to the first overlapping arm piece 21. The second stopper piece 30A forms a section of the second operating arm piece 30 that connects to the second overlapping arm piece 31. When the first operating arm piece 20 and the second operating arm piece 30 are rotated so that the space between them closes, the opposing surfaces of the first stopper piece 20A and the second stopper piece 30A come into contact with each other, restricting further approach between the first operating arm piece 20 and the second operating arm piece 30. The degree to which the first operating arm piece 20 and the second operating arm piece 30 close (approach distance) is limited at that point.

[0026] Furthermore, all or part of the first operating-side arm piece 20, the first overlapping arm piece 21, and the first cutting-side arm piece 22 may be constructed as separate components and connected to form the first arm section 2, or they may all be integrally formed to form the first arm section 2. Similarly, all or part of the second operating-side arm piece 30, the second double-overlapping arm piece 31, and the second cutting-side arm piece 32 may be constructed as separate components and connected to form the second arm section 3, or they may all be integrally formed to form the second arm section 3.

[0027] <First cutting section, second cutting section> The first cutting section 4 and the second cutting section 5 will be described with reference to Figures 1 to 4. The first cutting section 4 and the second cutting section 5 are integrated and configured to simultaneously cut the first and second objects on either side of the uncut object without cutting the uncut object in the center. Here, for convenience, in the following description, the direction perpendicular to the superposition direction P and in which the first cutting section 4 and the second cutting section 5 face each other is defined as the opposing direction T, and the direction perpendicular to both the superposition direction P and the opposing direction T is defined as the longitudinal direction L1 of the cutting tool 1.

[0028] <First cutting section> As shown in Figures 1 and 3, the first cutting section 4 is provided at the tip of the first arm section 2. The first cutting section 4 has a first blade section 40, a second blade section 44, a first housing section 48, and a first base section 49.

[0029] <First base> As shown in Figure 1, the first base portion 49 is connected to the first arm portion 2 (first cutting-side arm piece 22). In this embodiment, as shown in Figure 4(B), the first base portion 49 is composed of a U-shaped wall with a U-shaped cross-section and has an enclosed region Q surrounded by the U-shaped wall. When connecting the first base portion 49 to the first arm portion 2 (first cutting-side arm piece 22), the first arm portion 2 (first cutting-side arm piece 22) is inserted into the enclosed region Q of the first base portion 49, and with the U-shaped wall surrounding the first arm portion 2 (first cutting-side arm piece 22), the first base portion 49 is connected to the first arm portion 2 (first cutting-side arm piece 22) by a connecting member 49A (see Figure 1), such as a screw. At this time, the first base portion 49 extends above the first arm portion 2 (first cutting-side arm piece 22).

[0030] The above-described shape of the first base portion 49 is merely an example and is not limited thereto. Other configurations are also acceptable as long as they can be connected to the first arm portion 2 (first cutting side arm piece 22) by a connecting mechanism.

[0031] <First blade part, second blade part> As shown in Figures 1 and 3, the first blade portion 40 and the second blade portion 44 are continuous with and connected to the tip of the first base portion 49. The first blade portion 40 has a first cutting edge (which may also be called the first blade; the same applies hereinafter) 41 having a first length and extending parallel to the overlapping direction P. The second blade portion 44 has a second cutting edge (which may also be called the second blade; the same applies hereinafter) 45 having a second length and extending parallel to the overlapping direction P. As shown in Figures 3 and 4, the first blade portion 40 and the second blade portion 44 are arranged in parallel with a gap in the overlapping direction P at the tip of the first base portion 49, with the first cutting edge 41 and the second cutting edge 45 facing the second cutting portion 5. The first length and the second length may be the same or different.

[0032] Here, for the sake of convenience in the following explanation, in the first cutting section 4, the direction along the arrangement direction in which the first blade portion 40 and the second blade portion 44 and the first base portion 49 are aligned is defined as the length direction L2 of the first cutting section 4, the direction of the first cutting section 4 along the overlapping direction P is defined as the width direction W2 of the first cutting section 4, and the direction perpendicular to both the length direction L2 and the width direction W2 of the first cutting section 4 is defined as the depth direction D2 of the first cutting section 4. The first blade portion 40 (second blade portion 44) has a continuous portion 42A (46A) and a protruding portion 42B (46B). In the first blade portion 40 (second blade portion 44), the continuous portion 42A (46A) forms a section S1 that is continuous with the tip of the first base portion 49 in the length direction L2 of the first cutting section 4 (see Figures 1 and 3). The protruding portion 42B (46B) in the first blade portion 40 (second blade portion 44) is continuous with the continuous portion 42A (46A) in the depth direction D2 of the first cutting portion 4 and forms a section S2 that protrudes from the first base portion 49 toward the second cutting portion 5 (see Figures 1 and 3). The first cutting edge 41 (second cutting edge 45) is located at the tip of the protruding portion 42B (46B) in the depth direction D2 of the first cutting portion 4. As a result, in the first blade portion 40 (second blade portion 44), in the depth direction D2 of the first cutting portion 4, the first cutting edge 41 (second cutting edge 45) is located at a position shifted toward the second cutting portion 5 with respect to the tip of the first cutting side arm piece 22 (first arm portion 2). Also, in the depth direction D2 of the first cutting portion 4, the first cutting edge 41 (second cutting edge 45) is located at a position shifted toward the second cutting portion 5 than the first base portion 49.

[0033] <First Detention Unit> The first storage section 48 is used to store and retract the uncut object in the center when the cutting tool 1 cuts the first object and the second object. As shown in Figures 3 and 4, the first storage section 48 is interposed between the first blade section 40 and the second blade section 44 in the overlapping direction P. In other words, the first blade section 40, the first storage section 48, and the second blade section 44 are aligned in that order in the depth direction D2. The first storage section 48 extends along the depth direction D2 of the first cutting section 4. In other words, the first blade section 40, the first storage section 48, and the second blade section 44 are aligned in that order in the depth direction D2. Therefore, the depth direction D2 of the first cutting section 4 is the extension direction of the first storage section 48 (first extension direction).

[0034] The first housing section 48 is configured as a groove (first groove) that is recessed in the longitudinal direction L2 of the first cutting section 4 (the first arrangement direction in which the tip of the first cutting-side arm piece 22 and the first cutting section 4 are aligned), starting from the tip of the first housing section 48. The tip of the first housing section 48 (first groove) in the longitudinal direction L2 of the first cutting section 4 and both ends of the first housing section 48 (first groove) in the depth direction D2 of the first cutting section 4 (the direction in which the first housing section 48 extends) are open to the outside. In this embodiment, both ends of the first housing section 48 (first groove) in the width direction W2 of the first cutting section 4 are composed of a first opposing surface 480 and a second opposing surface 482 in the overlapping direction P of the first blade section 40 and the second blade section 44. In addition, the bottom surface of the lower end of the first cutting section 4 in the longitudinal direction of the first housing section 48 (first groove) is composed of the tip surface 490 of the first base section 49.

[0035] The tip surface 490 is continuous with both the first opposing surface 480 and the second opposing surface 482. The first opposing surface 480 and the second opposing surface 482 rise from both ends of the overlapping direction P of the tip surface 490 in the same direction (the longitudinal direction L2 of the first cutting portion 4).

[0036] <Second cutting section> As shown in Figures 1 and 3, the second cutting section 5 is provided at the tip of the second arm section 3. The second cutting section 5 has a third blade section 50, a fourth blade section 54, a second housing section 58, and a second base section 59.

[0037] <Second base> As shown in Figure 1, the second base portion 59 is connected to the second arm portion 3 (second cutting-side arm piece 32). In this embodiment, as shown in Figure 4(B), the second base portion 59 is composed of a U-shaped wall with a U-shaped cross-section and has an enclosed region Q surrounded by the U-shaped wall. When connecting the second base portion 59 to the second arm portion 3 (second cutting-side arm piece 32), the second arm portion 3 (second cutting-side arm piece 32) is inserted into the enclosed region Q of the second base portion 59, and with the U-shaped wall surrounding the second arm portion 3 (second cutting-side arm piece 32), the second base portion 59 is connected to the second arm portion 3 (second cutting-side arm piece 32) by a connecting member 59A (see Figure 1), such as a screw. At this time, the second base portion 59 extends above the second arm portion 3 (second cutting-side arm piece 32).

[0038] The above-described shape of the second base portion 59 is merely an example and is not limited thereto. Other configurations are also acceptable as long as they can be connected to the second arm portion 3 (second cutting side arm piece 32) by a connecting mechanism.

[0039] <Third blade part, fourth blade part> As shown in Figures 1 and 3, the third blade portion 50 and the fourth blade portion 54 are continuous with and connected to the tip of the second base portion 59. The third blade portion 50 has a third length and a third cutting edge (which may also be called the third blade; the same applies hereinafter) 51 that extends parallel to the overlapping direction P. The fourth blade portion 52 has a fourth length and a fourth cutting edge (which may also be called the fourth blade; the same applies hereinafter) 55 that extends parallel to the overlapping direction P. As shown in Figures 3 and 4, the third blade portion 50 and the fourth blade portion 54 are arranged in parallel with a gap in the overlapping direction P at the tip of the second base portion 59, with the third cutting edge 51 and the fourth cutting edge 55 facing the second cutting portion 5.

[0040] The third length and the fourth length may be the same or different. Furthermore, the first length and the third length are preferably the same, but may be different. Also, the second length and the fourth length are preferably the same, but may be different.

[0041] Here, for the sake of convenience in the following explanation, in the second cutting section 5, the direction along the arrangement direction in which the third blade section 50 and the fourth blade section 54 and the second base section 59 are aligned is defined as the length direction L3 of the second cutting section 5, the direction of the second cutting section 5 along the overlapping direction P is defined as the width direction W3 of the second cutting section 5, and the direction perpendicular to both the length direction L3 and the width direction W3 of the second cutting section 5 is defined as the depth direction D3 of the second cutting section 5. The third blade section 50 (fourth blade section 54) has a continuous section 52A (56A) and a protruding section 52B (56B). In the third blade section 50 (fourth blade section 54), the continuous section 52A (56A) forms a section S3 that is continuous with the tip of the second base section 59 in the length direction L3 of the second cutting section 5 (see Figures 1 and 3). The protruding portion 52B (56B) in the third blade portion 50 (fourth blade portion 54) is continuous with the continuous portion 52A (56A) in the depth direction D3 of the second cutting portion 5 and forms a section S4 that protrudes toward the second cutting portion 5 from the second base portion 59 (see Figures 1 and 3). The third cutting edge 51 (fourth cutting edge 55) is located at the tip of the protruding portion 52B (56B) in the depth direction D3 of the second cutting portion 5. As a result, in the third blade portion 50 (fourth blade portion 54), in the depth direction D3 of the second cutting portion 5, the third cutting edge 51 (fourth cutting edge 55) is located at a position shifted toward the first cutting portion 4 with respect to the tip of the second cutting side arm piece 32 (second arm portion 3). Also, in the depth direction D3 of the second cutting portion 5, the third cutting edge 51 (fourth cutting edge 55) is located at a position shifted toward the first cutting portion 4 from the second base portion 59.

[0042] <Second Detention Area> The second storage section 58 is used to store and retract the uncut object in the center when the cutting tool 1 cuts the first and second objects. As shown in Figures 3 and 4, the second storage section 58 is interposed between the third blade section 50 and the fourth blade section 54 in the overlapping direction P. In other words, the third blade section 50, the second storage section 58, and the fourth blade section 54 are arranged in that order in the depth direction D3. The second storage section 58 extends along the depth direction D3 of the second cutting section 5. Therefore, the depth direction D3 of the second cutting section 5 is the extension direction of the second storage section 58 (second extension direction).

[0043] The second housing section 58 is configured as a groove (second groove) that is recessed in the longitudinal direction L3 of the second cutting section 5 (the second arrangement direction in which the tip of the second cutting side arm piece 32 and the second cutting section 5 are aligned), starting from the tip of the second housing section 58. The second housing section 58 is open to the outside at both the tip of the second housing section 58 (second groove) in the longitudinal direction L3 of the second cutting section 5, and at both ends of the second housing section 58 (second groove) in the depth direction D3 of the second cutting section 5 (the direction in which the second housing section 58 extends). In this embodiment, both ends of the second housing section 58 (second groove) in the width direction W3 of the second cutting section 5 are composed of the third opposing surface 580 and the fourth opposing surface 582 in the overlapping direction P of the third blade section 50 and the fourth blade section 54. In addition, the bottom surface of the lower end of the second cutting section 5 in the longitudinal direction of the second housing section 58 (second groove) is composed of the tip surface 590 of the second base section 59.

[0044] The tip surface 590 is continuous with both the third opposing surface 580 and the fourth opposing surface 582. The third opposing surface 580 and the fourth opposing surface 582 rise from both ends of the overlapping direction P of the tip surface 590 in the same direction (the length direction of the second cutting portion 5).

[0045] <Positional relationship of each part> As shown in Figure 3, the first cutting edge 41 and the third cutting edge 51 face each other in the opposing direction T. The second cutting edge 43 and the fourth cutting edge 53 face each other in the opposing direction.

[0046] When the first operating arm piece 20 and the second operating arm piece 30 are rotated so that the space between them closes, the first cutting arm piece 22 and the second cutting arm piece 32 move to close the space between them, and as shown in Figure 3(B), the first cutting edge 41 and the third cutting edge 51 move closer together, and at the same time, the second cutting edge 43 and the fourth cutting edge 53 also move closer together. At the closest position of each cutting edge, the first cutting edge 41 and the third cutting edge 51 are in contact, and the second cutting edge 43 and the fourth cutting edge 53 are also in contact, thus configuring the first to fourth cutting edge pieces 40 to 54. At the closest position of each cutting edge, the first stopper piece 20A and the second stopper piece 30A are in contact, and the degree to which the first operating arm piece 20 and the second operating arm piece 30 close (close distance) is limited at that point.

[0047] Furthermore, the first housing section 48 and the second housing section 58 face each other in the opposing direction T. As the cutting edges approach each other, the first housing section 48 and the second housing section 58 also approach each other. At the closest approach position of each cutting edge, the first housing section 48 and the second housing section 58 are continuous in the opposing direction T, and their respective housing spaces are connected and communicate to form a single housing space. As a result, the first housing section 48 and the second housing section 58 become one unit, forming a single groove that extends in the first and second arrangement directions, starting from the tips of the first and second housing sections 48 and 58. This groove is open to the outside at both the tips in the first and second arrangement directions, and at both ends in the extending direction of the first and second housing sections 48 and 58. In this case, the extending directions of the first housing section 48 and the second housing section 58 are the same. In addition, it is preferable that the first and second arrangement directions are the same.

[0048] In this embodiment, the first cutting section 4 and the second cutting section 5 are configured as separate and independent members (cutting members) from the first arm section 2 and the second arm section 3, and the cutting tool 1 is configured by attaching the members (cutting members) to the first arm section 2 and the second arm section 3, but it is not limited to this. The first cutting-side arm piece 22 of the first arm section 2 may be used as the first base section 49, and the first cutting-side arm piece 22, the first blade section 40, the second blade section 44, and the first housing section 48 may be integrally formed. Alternatively, the second cutting-side arm piece 32 of the second arm section 3 may be used as the second base section 59, and the second cutting-side arm piece 32, the third blade section 50, the fourth blade section 54, and the second housing section 58 may be integrally formed.

[0049] <Supporting part> The biasing part (elastic part) 6 deforms during the closing operation of the first arm portion 2 (first operating side arm piece 20) and the second arm portion 3 (second operating side arm piece 30) to allow the closing operation. When the external force corresponding to the closing operation is released, it applies a biasing force to the first arm portion 2 (first operating side arm piece 20) and the second arm portion 3 (second operating side arm piece 30) in the direction that opens the gap between them, causing the opening operation to occur. The biasing part (elastic part) 6 is composed of a coil spring, for example, as shown in Figure 1, but is not limited to this and may be composed of other elastic members.

[0050] When the biasing part (elastic part) 6 is a coil spring, applying an external force corresponding to the closing operation causes the first arm part 2 (first operating side arm piece 20) and the second arm part 3 (second operating side arm piece 30) to close, causing the coil spring to elastically deform and compress. Then, when the external force corresponding to the closing operation is released, the coil spring deforms back to its original state, applying a force to the first arm part 2 (first operating side arm piece 20) and the second arm part 3 (second operating side arm piece 30) in the direction that opens the gap between them, causing an opening operation.

[0051] <How to use the cutting tool> The method of using the cutting tool 1 will be explained with reference to Figures 5 and 6. The material not to be cut is assumed to be a linear body 910 that constitutes the ceiling of the grape trellis, as shown in Figure 5. The linear body 910 is narrower than the width of the first storage section 48 and the second storage section 58. Grapevines 900A and 900B are located on either side of the linear body 910. As shown in Figure 6(A), the linear body 910 enters the first housing 48 and the second housing 58 from the open end on the front end side in the first arrangement direction of the first housing 48 and the open end on the front end side in the second arrangement direction of the second housing 58, while the opposing direction T of the cutting tool 1 and the length direction of the linear body 910 are substantially aligned, and the linear body 910 is housed and retracted in the first housing 48 and the second housing 58, while the vine 900A is positioned between the first blade portion 40 (first cutting edge 41) and the third blade portion 50 (third cutting edge 51), and the vine 900B is positioned between the second blade portion 44 (second cutting edge 45) and the fourth blade portion 54 (fourth cutting edge 55).

[0052] In this state, a closing operation is performed on the first arm section 2 and the second arm section 3, bringing the first cutting edge 41 and the third cutting edge 51 closer together, while simultaneously bringing the second cutting edge 45 and the fourth cutting edge 55 closer together. Then, as shown in Figure 6(B), the first cutting edge 41 and the third cutting edge 51 make contact with the vine 900A, gripping it and cutting the vine 900A, while simultaneously the second cutting edge 45 and the fourth cutting edge 55 make contact with the vine 900B, gripping it and cutting the vine 900B. Note that the closing operation refers to the operation of closing the first arm section 2 and the second arm section 3. Furthermore, the first housing section 48 and the second housing section 58 approach each other while facing each other in the opposing direction T, and during the cutting process, both the first housing section 48 and the second housing section 58 eventually connect and become one, forming a single groove with the extension directions of the first housing section 48 and the second housing section 58 being the same. As a result, the first housing section 48 and the second housing section 58 can house and retract the linear body 910 without placing any unnecessary load on the linear body 910.

[0053] In this manner, the cutting tool 1 cuts the vines 900A and 900B on both sides of the central linear body 910 without cutting the linear body 910 itself.

[0054] In this embodiment, the first cutting mechanism consists of the first arm portion 2, the second arm portion 3, the first blade portion 40, the first base portion 49, the third blade portion 50, and the second base portion 59, which cut the first object. The second cutting mechanism consists of the first arm portion 2, the second arm portion 3, the second blade portion 44, the first base portion 49, the fourth blade portion 54, and the second base portion 59, which cut the second object. The non-common parts of the first and second cutting mechanisms are spaced apart in the overlapping direction P, with a storage section for retracting objects not to be cut interposed between them. The common parts of the first and second cutting mechanisms are the parts related to operation, and are configured to allow the first and second cutting mechanisms to be operated simultaneously to cut both the first and second objects while simultaneously gripping them.

[0055] <Second Embodiment> Referring to Figures 7 to 9, the cutting tool 1 of the second embodiment of the present invention will be described. As shown in Figure 7, the cutting tool 1 of the second embodiment of the present invention is modified by replacing the first cutting section 4 with a third cutting section 7 and the second cutting section 5 with a fourth cutting section 8.

[0056] <Third cutting section> The third cutting section 7, like the first cutting section 4, has a first blade section 40, a second blade section 44, and a first base section 49. The first base section 49, like in the first embodiment, is connected to the first cutting-side arm piece 22 and operates in accordance with the movement of the first operating-side arm piece 20.

[0057] The first blade portion 40 and the second blade portion 44 are continuous with and connected to the tip of the first base portion 49. The first blade portion 40 and the second blade portion 44 are arranged in parallel with a gap in the overlapping direction P. The first blade portion 40 has a first length and has a first blade 410 that extends in the first alignment direction in which the first blade portion 40 and the first base portion 49 are aligned. The second blade portion 44 has a second length and has a second blade 450 that extends in the second alignment direction in which the second blade portion 44 and the first base portion 49 are aligned. The first blade 410 and the second blade 450 face the fourth cutting portion 8 side.

[0058] A first housing portion 48 is interposed between the first blade portion 40 and the second blade portion 44. Similar to the first embodiment, the tip of the first housing portion 48 in the longitudinal direction (first arrangement direction) of the third cutting portion 7 and both ends of the first housing portion 48 in the depth direction of the third cutting portion 7 are open to the outside. In this embodiment, both ends of the first housing portion 48 in the width direction of the third cutting portion 7 are composed of a first opposing surface 480 and a second opposing surface 482 in the overlapping direction P of the first blade portion 40 and the second blade portion 44, and the bottom surface of the lower end in the longitudinal direction of the first cutting portion 4 is composed of the tip surface 490 of the first base portion 49. The longitudinal direction, depth direction, and width direction of the third cutting portion 7 are the same as defined in the first cutting portion 4 in the first embodiment.

[0059] <Fourth cutting section> The fourth cutting section 8, like the second cutting section 5, has a third blade section 50, a fourth blade section 54, and a second base section 59. The second base section 59, like in the first embodiment, is connected to the second double-folded arm piece 31 and operates in accordance with the movement of the second operating-side arm piece 30.

[0060] The third blade portion 50 and the fourth blade portion 54 are continuous with and connected to the tip of the second base portion 59. The third blade portion 50 and the fourth blade portion 54 are arranged in parallel with a gap in the overlapping direction P. The third blade portion 50 has a third length and has a third blade 510 that extends in the third alignment direction where the third blade portion 50 and the second base portion 59 are aligned. The fourth blade portion 54 has a fourth length and has a fourth blade 550 that extends in the fourth alignment direction where the fourth blade portion 54 and the second base portion 59 are aligned. The third blade 510 and the fourth blade 550 face the third cutting portion 7 side.

[0061] A second housing section 58 is interposed between the third blade section 50 and the fourth blade section 54. Similar to the first embodiment, the tip of the second housing section 58 in the longitudinal direction (third arrangement direction) of the fourth cutting section 8 and both ends of the second housing section 58 in the depth direction of the fourth cutting section 8 are open to the outside. In this embodiment, both ends of the second housing section 58 in the width direction of the fourth cutting section 8 are composed of a first opposing surface 480 and a second opposing surface 482 in the overlapping direction P of the first blade section 40 and the second blade section 44, and the bottom surface of the lower end of the fourth cutting section 8 in the longitudinal direction is composed of the tip surface 490 of the first base section 49. The longitudinal direction, depth direction, and width direction of the fourth cutting section 8 are the same as defined in the second cutting section 5 in the first embodiment.

[0062] In this embodiment, as in the first embodiment, when the first arm portion 2 and the second arm portion 3 are closed, the first blade 410 and the third blade 510 move closer together, and at the same time, the second blade 450 and the fourth blade 550 also move closer together. The first blade 410 and the third blade 510 then grip and cut the first object. At the same time, the second blade 450 and the fourth blade 550 grip and cut the second object. At this time, any uncut material between the first and second objects is stored and retracted in the first storage portion 48 and the second storage portion 58. Also, in this embodiment, as in the first embodiment, when the cutting tool 1 is in the closed state (see Figure 8), the first storage portion 48 and the second storage portion 58 become continuous and connected. As described above, the scissors are constructed with the third cutting portion 7 and the fourth cutting portion 8 of this embodiment.

[0063] It should be noted that the cutting tool 1 of the present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention. Furthermore, all combinations of the constituent elements of all the embodiments described above are included within the scope of the present invention. [Explanation of Symbols]

[0064] 1 cutting tool 2. First arm section 3. Second arm section 4 First cutting section 5 Second cutting section 6. Biasing section 7 Third cutting section 8 Fourth cutting section 10. Superimposed region 11 Connection structure 12 Through holes 13. Shaft 14A Retaining part 14B Retaining part 20 First operating side arm piece 20A First stopper piece 21 First overlapping arm piece 22 First cutting side arm piece 30 Second operating side arm piece 30A Second stopper piece 31. Double-layered arm piece 32 Second cutting side arm piece 40 First blade part 41 First cutting edge 42A Continuous section 42B Protrusion 43 Second cutting edge 44 Second blade part 45 Second cutting edge 48 First Detention Unit 49 First base 49A Connecting member 50 Third blade part 51 Third cutting edge 52 Fourth blade part 52A Continuous section 52B Protrusion 53 Fourth cutting edge 54 Fourth blade part 55 Fourth cutting edge 58 Second Detention Unit 59 Second base 59A Connecting member 410 First blade 450 Second blade 480 First opposing surface 482 Second opposing surface 490 Tip surface 510 Third blade 550 Fourth blade 580 Third facing surface 582 Fourth facing surface 590 Tip surface 900A Vine 900B Vines 910 Linear body D2, D3 Depth direction L1, L2, L3 Length direction P Superposition direction Q Encirclement T Opposite direction W2, W3 width direction

Claims

1. A first arm section and a second arm section are rotatably connected in overlapping and intersecting regions, A first cutting section is provided at the tip of the first arm section and has a first blade, a second blade, and a first housing section, A second cutting section is provided at the tip of the second arm section and has a third blade, a fourth blade, and a second housing section, Equipped with, The first blade and the second blade are arranged in the overlapping direction in which the first arm portion and the second arm portion overlap in the overlapping region, with the first housing portion interposed between them. The third blade and the fourth blade are arranged in the overlapping direction with the second housing portion interposed between them. The first blade and the third blade face each other in the opposing directions of the first cutting portion and the second cutting portion, and when the first arm portion and the second arm portion rotate so that the space between the first arm portion and the second arm portion closes, the first blade and the third blade approach each other, and are configured to cut a first object interposed between the first blade and the third blade. The second blade and the fourth blade face each other in the opposing direction, and when the first arm and the second arm rotate so that the space between them closes, the second blade and the fourth blade move closer together, and are configured to cut a second object interposed between the second blade and the fourth blade. When a non-cutting object is interposed between the first object and the second object, the first and second storage sections are configured to accommodate the non-cutting object. Cutting tool.

2. When the direction in which the tip of the first arm portion and the first cutting portion are aligned is defined as the first alignment direction, and the direction perpendicular to both the first alignment direction and the superposition direction is defined as the first extension direction of the first housing portion, the tip of the first housing portion in the first alignment direction and both ends of the first housing portion in the first extension direction are open to the outside, When the direction in which the tip of the second arm portion and the second cutting portion are aligned is defined as the second alignment direction, and the direction perpendicular to both the second alignment direction and the superposition direction is defined as the second extension direction of the second housing portion, the tip of the second housing portion in the second alignment direction and both ends of the second housing portion in the second extension direction are open to the outside, the device is characterized in that The cutting tool according to claim 1.

3. The first housing portion is open to the outside at both the tip of the first housing portion in the first arrangement direction and at both ends of the first housing portion in the first extending direction, and is configured as a groove recessed in the first arrangement direction between the first blade and the second blade. The second housing portion is open to the outside at both the tip of the second housing portion in the second arrangement direction and at both ends of the second housing portion in the second extending direction, and is characterized in that it is configured as a groove recessed in the second arrangement direction by the third blade and the fourth blade. The cutting tool according to claim 2.

4. The first blade and the second blade are positioned at a location offset toward the second cutting portion with respect to the tip of the first arm portion. The third blade and the fourth blade are characterized in that they are positioned offset toward the first cutting portion with respect to the tip of the second arm portion. The cutting tool according to claim 1.

5. The first blade, the second blade, the third blade, and the fourth blade are characterized in that they extend parallel to the direction of overlap. The cutting tool according to claim 4.

6. When the direction in which the tip of the first arm portion and the first cutting portion are aligned is defined as the first alignment direction, and the direction in which the tip of the second arm portion and the second cutting portion are aligned is defined as the second alignment direction, The first blade and the second blade extend in the first arrangement direction, The third and fourth blades are characterized by extending in the second arrangement direction. The cutting tool according to claim 1.

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