Mowing structure and mower

Abstract

To provide a simple and convenient reaping structure and a reaper.SOLUTION: A manual cutting structure for cutting an object, comprising: a rear base portion; and a front blade portion fixed to the base portion, wherein a cutting edge of the blade portion faces obliquely upward.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a mowing structure and a mowing implement. [Background technology]

[0002] There are reapers and mowers (hereinafter collectively referred to as "mowers") for cutting weeds and the like.

[0003] Mowing grass is hard work, performed mainly in the summer under the scorching sun. The work is often done on slopes, especially in mountainous areas, and can be dangerous. Even in urban areas, mowing is done on roadsides, in home gardens, and in yards.

[0004] One such mower proposed is a push-type brush cutter powered by an engine. In this push-type brush cutter, "the brush cutter body 40 includes an engine 41 as a power source, a cutting blade 42 for cutting the grass, a drive mechanism 43 that transmits the rotational drive force of the engine 41 to the cutting blade 42, a main pipe 44 that covers the shaft (not shown) of the drive mechanism 43, a scattering prevention cover 45 attached to the main pipe 44 to prevent pebbles and other debris from flying during operation, and a throttle lever 47 attached to the handle 51 that can control the rotation state of the engine 41 via a wire 46" (see paragraph

[0021] of Patent Document 1). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 7289999 Summary of the Invention [Problem to be solved by the invention]

[0006] Powered harvesters, which use engines or other driving forces, have high output and can reduce the labor required by operators. However, they have problems such as high equipment costs, large vibrations, and heavy weight. Furthermore, there is a risk of burns from high-temperature engines, and those that use gasoline or other fuels involve handling hazardous materials, and continuous exposure to exhaust fumes can be harmful to health. Powered harvesters usually have exposed rotating blades that rotate at high speeds, which can injure people if they come into contact with them and can also scatter pebbles or other debris if they hit them.

[0007] Powered mowers require the wearing of protective equipment such as safety glasses, gloves, and safety shoes, but because they are noisy, they cannot be used in urban areas in the cool early morning hours, and must be used in the heat, placing a great strain on the worker's body. Furthermore, there is a risk that the operator may not notice an approaching person and may come into contact with the rotating blades as he turns around, and in areas where there are passersby, three workers are required to operate the mower (a person to operate the mower, a person to direct traffic, and a person to hold up a screen to prevent flying stones), resulting in high operating costs.

[0008] Examples of manual weed harvesters include the sickle (large scythe), which has a long handle and can be used while standing. However, depending on the specific configuration, the sickle can require physical strength to move from side to side (swing). Also, for example, there are pruning shears, which are scissors-like tools used to cut weeds while standing, and require both hands to open and close the handles, but these are not necessarily easy to use.

[0009] The present invention is intended to solve at least one of the above problems, and has an object to provide a simple and easy-to-use mowing structure and mowing implement. [Means for solving the problem]

[0010] One aspect of the present invention for solving the above problem is a manual mowing structure for mowing an object, which includes a rear base and a front blade portion fixed to the base, the cutting edge of the blade portion facing diagonally upward.

[0011] The blade may further include a guide portion having a protrusion disposed adjacent to the blade portion, the guide portion being fixed to the base such that the protrusion protrudes toward the blade portion.

[0012] The guide portion may have the protrusion positioned above the blade portion, and a first relief space between the guide portion and the cutting edge of the blade portion.

[0013] The blade portion may be long in the front-rear direction, with a front end side positioned laterally and below a rear end side.

[0014] The blade support portion may include a blade support portion that supports the blade portion, and the blade support portion may be V-shaped, with an acute angle between an attachment portion for detachably attaching the blade portion and a connecting portion for connecting the blade portion to the base.

[0015] The blade may include a plurality of blade bodies, each including the blade portion and the blade support portion that supports the blade portion, and the guide portion may be fixed to the base by the blade support portion of one of the blade bodies, and the convex portion may protrude toward the blade portion of another adjacent blade body.

[0016] One aspect of the present invention for solving the above problem is a reaper including the above reaping structure. [Effects of the Invention]

[0017] According to the present invention, a simple and easy-to-use mowing structure and mowing implement can be provided.

[0018] Problems, configurations, and effects other than those described above will become apparent from the following description of the embodiments. [Brief explanation of the drawings]

[0019] [Figure 1] 1 is a diagram showing an example of an embodiment of a reaper according to the present invention; [Figure 2] 1 is a diagram showing an example of a first embodiment of a reaping structure according to the present invention. [Figure 3] 1 is a diagram showing an example of a state in which the reaping structure of the first embodiment is used. FIG. [Figure 4] FIG. 10 is a perspective view showing an example of a second embodiment of the reaping structure according to the present invention. [Figure 5] FIG. 10 is a front view showing an example of a second embodiment of the reaping structure according to the present invention. [Figure 6] FIG. 10 is a top view showing an example of a second embodiment of the reaping structure according to the present invention. [Figure 7] FIG. 10 is a left side view showing an example of a second embodiment of a reaping structure according to the present invention. [Figure 8] FIG. 10 is a right side view showing an example of a second embodiment of the reaping structure according to the present invention. [Figure 9] FIG. 2 is a perspective view showing an example of a second embodiment of the reaping structure according to the present invention. [Figure 10] FIG. 10 is a top view showing an example of a second embodiment of the reaping structure according to the present invention. [Figure 11] FIG. 10 is a front view showing an example of a second embodiment of the reaping structure according to the present invention. [Figure 12] FIG. 10 is a diagram showing an example of a state in which the reaping structure of the second embodiment is used. [Figure 13] FIG. 10 is a diagram showing an example of a state in which the reaping structure of the second embodiment is used. [Figure 14] FIG. 10 is a diagram showing a first modification of the second embodiment of the reaping structure according to the present invention. [Figure 15] FIG. 1 is a diagram showing a first modification of the first embodiment of the reaping structure according to the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0020] Hereinafter, examples of embodiments of the present invention will be described with reference to the drawings. Note that components common to the following embodiments will be assigned the same reference numerals as those previously mentioned, and their description may be omitted. Furthermore, when referring to the shape, positional relationship, etc. of components, etc., it is understood that the reference numerals include those that are substantially similar or similar to the shape, etc., unless otherwise specified or when it is clearly considered otherwise in principle.

[0021] <reaper> 1 is a diagram showing an example of an embodiment of a reaper according to the present invention. The reaper 1 is used to cut an object, such as weeds.

[0022] As an example, the reaper 1 includes a gripping part 2 that is held by an operator, a ground-contact part 3 in front of the gripping part 2, and a reaping structure 10 that is attached to the ground-contact part 3. The reaper 1 in this example is a manual type that is manually operated by an operator who holds the gripping part 2 and pushes it forward from behind to manually reap an object. In this application, unless otherwise specified, the side (direction) of the gripping part (operator) is referred to as the rear side (rear), and the opposite direction is referred to as the front side (forward).

[0023] In the drawings, X indicates the front-to-rear direction (+X is forward), Y indicates the left-to-right direction (+Y is right), and Z indicates the up-down direction (+Z is upward) (the same applies to the following drawings). In this application, the XZ plane (a plane along the XZ plane) is referred to as a vertical plane, and the XY plane (a plane along the XY plane) is referred to as a horizontal plane.

[0024] The gripping portion 2 is, for example, configured of a U-shaped member as shown in the drawing. As an example, the gripping portion 2 has both ends bent at a predetermined angle as shown in the drawing, and is attached and fixed to the ground contact portion 3 by fastening members such as screws, bolts, pins, etc.

[0025] The ground contact part 3 is the part that comes into contact with the ground. The ground contact part 3 includes a main body 31 and a foot part 32 that is attached to the main body 31. The lower end of the foot part 32 is located lower than the lower end of the main body 31, and the lower end of the foot part 32 comes into contact with the ground. The main body 31 is, for example, made of a plate-like member.

[0026] As an example, the foot 32 is configured by a wheel with a pair of rotating bodies rotatably mounted on a shaft member. A pair of through holes for fitting the foot 32 is provided in the main body 31. The foot 32 is assembled to the main body 31 so that the pair of rotating bodies fit into the pair of through holes of the main body 31 and the shaft member is supported by the main body 31.

[0027] The ground contact part 3 has a pair of rotating bodies of the foot part 32 exposed from a pair of through holes in the main body 31 and in contact with the ground, and when the grip part 2 is pushed forward, the pair of rotating bodies roll and move forward. By configuring the ground contact part 3 in this way, the force required to push the reaper 1 forward can be reduced and it can also be easily adapted to uneven ground.

[0028] The reaping structure 10 is a structure for mowing an object. In this example, the reaping structure 10 is attached and fixed to the ground-contact portion 3, and when an operator pushes the gripping portion 2 forward, the reaping structure 10 is pushed forward to cut (mow) the object. As an example, the reaping structure 10 has a base portion 4 that is L-shaped when viewed from the side, and is attached to the main body 31 at the upper end portion 42 of the base portion 4 by fastening members, and is installed at the front end portion of the main body 31. Details of the reaping structure 10 will be described later.

[0029] The reaper 1 may have a ground-contacting portion 3 formed of a plate-like or block-like member, and may slide along the ground. The reaper 1 may not have a ground-contacting portion 3, and the reaping structure 10 may be attached to the gripping portion 2. In this case, the gripping portion 2 may, for example, be formed of a square-shaped member, with the reaping structure 10 attached to the long, horizontal portion at the front of the square. The gripping portion 2 may, for example, be formed of a T-shaped member, with the base 4 attached to the long, horizontal portion of the T, and the operator may grip the long portions at the front and rear of the T-shape.

[0030] <First embodiment of the harvesting structure> 2A and 2B are diagrams showing an example of the first embodiment of the reaping structure according to the present invention, in which (a) is an example of a top view, (b) is an example of a front view, and (c) is a diagram for explaining the angle of the blade. Note that the illustration is only an example, and the reaping structure 10 may have a configuration that is, for example, symmetrical to the illustrated example.

[0031] As shown in Figures 2(a) and 2(b), the reaping structure 10 of this embodiment, for example, includes a rear base 4 and a front blade portion 5 fixed to the base 4. The reaping structure 10 is not particularly limited, but preferably further includes a guide portion 6 fixed to the base 4 and disposed adjacent to the blade portion 5.

[0032] As described above, the base 4 is, for example, formed of a horizontally elongated member that is L-shaped (having an L-shaped cross section) when viewed from the side. The base 4 has a front end 41 that forms one side of the L shape and an upper end 42 that forms the other side. When the upper end 42 of the base 4 is in a parallel position that is approximately parallel to the ground, the front end 41 is in a vertical position that is approximately perpendicular to the ground. Note that in the illustration, a portion of the base 4 is omitted, and the cutting edge 5 and the guide 6 are mainly shown.

[0033] The blade portion 5 is located in front of the front end portion 41 of the base portion 4. The cutting edge 51 of the blade portion 5 faces diagonally upward. The blade portion 5 may be long horizontally or may have approximately equal front-to-back and left-to-right widths, but is preferably long front-to-back. The blade portion 5 is supported by a blade support portion 7.

[0034] As an example, the blade support part 7 is formed of a member that is V-shaped (having a V-shaped cross section) when viewed from the front. The blade support part 7 has an attachment part 71 for detachably attaching the blade part 5, and a connecting part 72 for connecting the blade part 5 to the base part 4. The blade support part 7 has the attachment part 71 forming one side of the V shape and the connecting part 72 forming the other side, with the two parts forming an acute included angle. The blade part 5 is attached to the attachment part 71 so that part or all of the cutting edge 51 is exposed.

[0035] The mounting portion 71 has a first portion 711 that contacts one surface (the right side in the drawing) of the blade portion 5, and a second portion 712 that contacts the other surface (the left side in the drawing). The blade portion 5 is held by being sandwiched between the first portion 711 and the second portion 712. The first portion 711 and the second portion 712 are fastened together with a fastening member such as a screw, bolt, or pin (see fastening member 91 in FIG. 15 ), with the blade portion 5 sandwiched between them.

[0036] As an example, the mounting portion 71 can be formed integrally with the first portion 711 and the second portion 712 by using a single metal plate-shaped member, cutting or the like to provide a blade window portion that exposes the portion closer to the cutting edge 51, and then bending or the like to face the first portion 711 and the second portion 712 toward each other.

[0037] The connecting portion 72 may be formed separately from the mounting portion 71 and joined by adhesive or welding, but is preferably formed integrally. As one example, the blade support portion 7 can be formed integrally with the mounting portion 71 by using a single metal plate-shaped member, providing a blade window portion by cutting or the like, and then arranging the first portion 711 and the second portion 712, and the second portion 712 and the connecting portion 72 facing each other by bending or the like.

[0038] In the following description, the blade body will be collectively referred to as the blade portion 5 and the blade support portion 7 that supports the blade portion 5. The reaping structure 10 of this embodiment includes at least one blade body 11.

[0039] As shown in FIG. 2(c), the cutting edge 51 of the blade portion 5 faces diagonally upward, forming an angle α1 with the horizontal plane Q1. The angle α1 is an acute angle, for example, 20 to 70 degrees, preferably 30 to 60 degrees. As an example, the connecting portion 72 is disposed approximately perpendicular to the horizontal plane Q1. The mounting portion 71 is inclined laterally so as to form an angle α2 with the connecting portion 72. In other words, the included angle of the V-shape of the blade support portion 7 is α2.

[0040] As shown in Fig. 2(a), for example, the blade portion 5 is arranged so that the cutting edge 51 is on a substantially vertical plane P1 when viewed from above. Also, as shown in Fig. 2(b), for example, the blade portion 5 is arranged so that the cutting edge 51 is on a substantially horizontal plane Q1 when viewed from the front.

[0041] As shown in Figures 2(a) and 2(b), the guide portion 6 is disposed next to the blade portion 5 and guides an object to the blade portion 5. The guide portion 6 is configured according to the length of the blade portion 5 and is preferably configured to be long in the front-to-rear direction. As an example, the guide portion 6 is configured from a flat plate-like member and fixed to the base portion 4. As an example, the guide portion 6 has a roughly rectangular planar shape with its linear end facing the adjacent blade portion 5. As shown in the figures, the guide portion 6 preferably has a planar shape with a protrusion 61 and is fixed to the base portion 4 so that the protrusion 61 protrudes toward the adjacent blade portion 5.

[0042] The guide portion 6 is preferably arranged so that the convex portion 61 is above the cutting edge 51. More preferably, the guide portion 6 has the convex portion 61 partially blocking the upper side of the cutting edge 51. That is, as shown in FIG. 2(a), when the cutting edge 51 is on the vertical plane P1, the portion of the convex portion 61 near the tip of the guide portion 6 exceeds the vertical plane P1 and approaches the connecting portion 72.

[0043] The guide part 6 may be fixed directly to the base part 4, but is preferably connected and fixed to the base part 4 via a guide support part 8. The guide support part 8 is, for example, made of a plate-like member, and its rear end is fixed to the base part 4 by adhesive bonding, welding, or the like so that it extends approximately parallel to the connecting part 72 of the blade support part 7. The guide part 6 is, for example, joined to the upper end part of the guide support part 8 by adhesive bonding or welding. The guide part 6 and the guide support part 8 may, for example, be integrally formed by bending a single metal plate-like member.

[0044] In the following description, the guide portion 6 and the guide support portion 8 that supports the guide portion 6 will be collectively referred to as the guide body. The reaping structure 10 of this embodiment includes at least one guide body 12. As shown in the figure, the guide body 12 of this embodiment is L-shaped when viewed from the front (having an L-shaped cross section), with the guide portion 6 forming one side of the L shape and the guide support portion 8 forming the other side.

[0045] As shown in FIG. 2(b), the blade portion 5 preferably has a first relief space extending vertically (and front-to-back) between the cutting edge and the guide portion 6, and the vertical width (indicated by the arrow in the figure) is, for example, approximately 1 / 4 to 1 / 2 of the vertical width of the connecting portion 72. When the guide support portion 8 is provided, the blade portion 5 has a second relief space extending horizontally (and front-to-back) between the cutting edge and the guide support portion 8, and this space communicates with the first relief space. In the figure, the first and second relief spaces extending integrally are collectively shown as relief space S. It can also be said that the blade portion 5 has relief space S between the cutting edge and the guide body 12.

[0046] 3 is a diagram showing an example of the state of use (cutting) of the reaping structure according to the first embodiment. The figure shows a cross section of a cutting target B (weeds in the figure) growing on the ground A. The reaping structure 10 of this embodiment is simple and easy to use. It will be described in more detail below.

[0047] Powered grass trimmers typically have blades that rotate using rotary drive force, which means they are expensive, vibrate a lot, and are heavy. Furthermore, the high-speed rotating blades can come into contact with people and cause injury, or hit pebbles and other debris, scattering them.

[0048] The reaping structure 10 of this embodiment does not use a rotary blade that rotates at high speed by a rotary drive force, but uses a blade portion 5 that is pushed forward for use, so it is quiet, inexpensive, and can prevent contact with people or the scattering of pebbles.In addition, since it does not handle hazardous materials such as gasoline, it is easy to use.

[0049] When mowing by pushing the weeds from the back to the front, if the blade is long and horizontal, a large number of weeds will accumulate (pile up) in front of the blade tip. Therefore, even though only the weeds in front of the blade tip are cut, there is a large resistance from the large number of weeds, and it takes a lot of force to push the blade forward. Also, if there is a stone or something in front of the blade, the blade tip will collide with the stone and become easily damaged (chipped).

[0050] In the reaping structure 10 of this embodiment, the blade section 5 is arranged long from front to back, so when the object B is pushed forward from the rear, it comes into contact with the cutting edge 51 along the long blade section 5, and is cut as the blade section 5 moves forward. Therefore, the reaping structure 10 of this embodiment requires less force to push forward. Also, when there is a stone or the like in front of the reaping structure 10, the long blade section 5 collides mainly with the front end face or the attachment section 71, which prevents damage to the cutting edge 51.

[0051] During weeding, when the blade cuts vertically into the weeds, a longitudinal force is applied to the weed fibers, but the weed fibers are resistant to forces in this direction, so a large force is required to cut them.

[0052] In the reaping structure 10 of this embodiment, the cutting edge 51 faces diagonally upward, so that the cutting edge 51 cuts into the weeds at an angle, and a force is applied to the weeds in a direction that peels off the fibers. As a result, the weeds can be cut cleanly with little force.

[0053] The reaping structure 10 of this embodiment is equipped with a guide portion 6 that is long from front to back, which causes weeds to align between the blade portion 5 and the guide portion 6, making it easier to cut. In addition, the convex portion 61 of the guide portion 6 protrudes toward the blade portion 5 and partially blocks the area above the cutting edge 51, so that, as shown in the figure, the portion of the weed near the upper end is bent by the tip of the convex portion 61 and the portion near the lower end is pressed against the cutting edge 51, making it easier to cut. In other words, the reaping structure 10 of this embodiment can capture and bend the object B between the guide portion 6 and the blade portion 5 to cut it, just as if you were holding a sickle with one hand and grabbing and holding the weed with the other hand to cut it.

[0054] More preferably, as shown in the figure, the guide portion 6 and the guide support portion 8 have an escape space S between them and the cutting edge 51. By providing the escape space S, the reaping structure 10 can allow dead branches and the like to escape.

[0055] In the reaping structure 10 of this embodiment, the blade section 5 is detachably attached, so that the operator (user) can replace it himself. In addition, because the configuration is simple, the operator can also repair it himself using ordinary tools.

[0056] As an example, the reaping structure 10 of this embodiment includes one set of blade body 11 and guide body 12. As an example, the reaping structure 10 of this embodiment includes multiple sets of blade body 11 and guide body 12. In this case, the blade bodies 11 and guide bodies 12 are arranged alternately in parallel. The connecting portion 72 of one blade body 11 and the guide support portion 8 of the guide body 12 that guides the object B to the adjacent other blade body 11 may be arranged with a gap between them or in contact with each other.

[0057] <Modification 1 of Embodiment 1 of the reaping structure> FIG. 15 is a diagram showing a first modified example of the first embodiment of the reaping structure according to the present invention. For ease of explanation, the illustration is partially see-through. This example differs from the first embodiment mainly in that the front end of the blade section 5 is positioned laterally and downwardly relative to the rear end. The blade support section 7 is configured to support the blade section 5 positioned in this manner. The guide section 6 and the guide support section 8 are configured to correspond to the blade section 5 positioned in this manner. For details, please refer to the same or similar configuration of the second embodiment described below, and further explanation will be omitted here.

[0058] <Second embodiment of the harvesting structure> 4 to 8 are diagrams showing an example of a reaping structure according to a second embodiment of the present invention, with FIG. 4 being an example of a perspective view, FIG. 5 being an example of a front view, FIG. 6 being an example of a top view, FIG. 7 being an example of an left side view, and FIG. 8 being an example of an right side view. The reaping structure 10 of this embodiment differs from the first embodiment above mainly in that it is provided with a guided blade 13. In the following explanation, explanations of points that overlap with those described above will be omitted as appropriate. Note that the illustrations are merely examples, and the reaping structure 10 may, for example, be configured line-symmetrically with the illustrated example.

[0059] The reaping structure 10 of this embodiment includes a plurality of blade bodies 11, and the guide portion 6 is fixed to the base portion 4 by the blade support portion 7 of one blade body 11, and the convex portion 61 protrudes toward the blade portion 5 of another adjacent blade body 11. In other words, in the reaping structure 10 of this embodiment, the blade support portion 7 also serves as the guide support portion 8 described above.

[0060] Hereinafter, the blade body 11 and the guide portion 6 for guiding the object B to the adjacent blade body 11 will be collectively referred to as a guided blade body. The reaping structure 10 of this embodiment includes at least one guided blade body 13. Note that a portion of the base 4 is omitted in Figures 5 and 6.

[0061] As shown in Figure 4, the guided blade body 13 is fixed by connecting the blade section 5 and the guide section 6 to the base section 4 via one blade support section 7. More specifically, the guided blade body 13 is fixed to the base section 4 at the rear end of the connecting section 72 by adhesive bonding, welding, or the like. By configuring the reaping structure 10 in this embodiment in this manner, the structure can be further simplified.

[0062] As an example, the guided blade 13 is formed by integrally connecting components that are formed separately. The guided blade 13 is preferably formed integrally from a single metal plate member by cutting, bending, or the like.

[0063] As shown in Figure 5, the cutting edge 51 of the blade portion 5 faces diagonally upward. The blade portion 5 is clamped by the mounting portion 71 of the blade support portion 7, and forms an angle α1 with the horizontal plane Q1. The angle α1 is an acute angle, for example, between 20 and 70 degrees, and preferably between 30 and 60 degrees. The blade portion 5 can also be said to be in a position having a roll angle of rotation around the X axis.

[0064] When viewed from the front, when the rear end of the connecting portion 72 is on the vertical plane P2, the mounting portion 71 is inclined laterally to form an angle α2 with the rear end of the connecting portion 72. Preferably, the connecting portion 72 and the front end of the mounting portion 71 also form an approximate angle α2. In other words, the included angle of the V-shape of the blade support portion 7 is α2.

[0065] As shown in FIG. 6, the blade portion 5 is installed long in the front-to-rear direction. In other words, when viewed from above, the front-to-rear width C1 of the exposed cutting edge 51 of the blade portion 5 is greater than the left-to-right width D1. In this embodiment, the front end of the blade portion 5 is positioned laterally relative to the rear end. Here, the blade portion 5 forms an angle β1 with the vertical plane P1. It can also be said that the blade portion 5 is in a position having a yaw angle of rotation around the Z axis. By configuring the blade portion 5 in this manner, the cutting edge 51 pushed forward can more easily cut the object B.

[0066] In a top view, the mounting portion 71 has a front-to-rear width C2 that is greater than the left-to-right width D2. The mounting portion 71 also has a front-to-rear width C2 that is greater than the front-to-rear width C1 of the blade portion 5, and preferably has a left-to-right width D2 that is greater than the left-to-right width D1 of the blade portion 5.

[0067] As shown in the figure, the front end of the connecting portion 72 is positioned laterally relative to the rear end. The connecting portion 72 forms an angle β2 with the vertical plane P2. In other words, the joint between the mounting portion 71 and the connecting portion 72 forms an angle β2 with the vertical plane.

[0068] 7, in this embodiment, the front end of the blade portion 5 is positioned lower than the rear end. The front side of the blade portion 5 is tilted downward, forming an angle θ1 with the horizontal plane Q1. In other words, the blade portion 5 is in a position having a pitch angle of rotation around the Y axis.

[0069] The front end of the mounting portion 71 is positioned lower than the rear end. The lower end of the mounting portion 71 is angled downward and forms an angle θ2 with the horizontal plane Q2. Preferably, the angle θ2 is equal to the angle θ1.

[0070] As shown in Fig. 5, the guide part 6 is connected and fixed to the base part 4 by the connecting part 72 of the blade support part 7. The guide part 6 is fixed to the base 4 so as to protrude not toward the blade part 5 supported by the blade support part 7, but toward another blade part adjacent to the blade part 5.

[0071] As shown in Fig. 6, the guide portion 6 is installed so as to be long in the front-to-rear direction. As shown in Fig. 8, the front end of the connecting portion 72 is positioned lower than the rear end. The front end of the connecting portion 72 is angled downward and forms an angle θ3 with the horizontal plane Q3. The guide portion 6 is joined to the upper end of the connecting portion 72, and similarly, the front end is positioned lower than the rear end and forms an angle with the horizontal plane that is approximately equal to the angle θ3.

[0072] 9 is a perspective view of a second embodiment of the reaping structure according to the present invention, showing the guided blade body. The reaping structure 10 allows for easy replacement of the blade section 5. This will be described in detail below.

[0073] The mounting part 71 has a housing portion 713 in one or both of the first part 711 and the second part 712 for housing the blade part 5, and the housing portion 713 houses and clamps the blade part 5. As an example, the blade part 5, the first part 711, and the second part 712 each have a through-hole at the rear end for inserting a fastening member 91. The blade part 5 is inserted into the housing portion 713 from below or the side, for example, and is fastened to the mounting part 71 by the fastening member 91. The fastening member 91 includes, for example, a bolt and a split pin inserted into the pin hole of the bolt.

[0074] The blade portion 5 is not particularly limited, but as an example, a replaceable blade for a cutter knife without a cutting groove can be used. Replaceable blades for cutter knives are standardized, sharp, have through holes, and are inexpensive. By using a replaceable blade for a cutter knife, blades of the same size, shape, and quality can be easily obtained, and when the cutting edge 51 becomes dull due to wear, they can be quickly and easily replaced.

[0075] 10 and 11 are diagrams showing an example of a second embodiment of the reaping structure according to the present invention, with FIG. 10 being an example of a top view and FIG. 11 being an example of a front view.

[0076] As an example, the reaping structure 10 of this embodiment includes one guided blade body 13, and on both sides of the guided blade body 13, one blade body 11 and one guide body 12 are arranged in parallel. The reaping structure 10 of this embodiment preferably includes a plurality of guided blade bodies 13, and on one side of the entire structure, one blade body 11 is arranged in parallel, and on the other side, one guide body 12 is arranged in parallel. The reaping structure 10 of this embodiment may include only a plurality of guided blade bodies 13.

[0077] 10 and 11 show an example in which the reaping structure 10 is provided with at least two parallel guided blade bodies 13. For ease of explanation, the illustrations omit components other than the base 4 and the two guided blade bodies 13.

[0078] In the reaping structure 10 of this embodiment, as shown in the figure, the guide portion 6 is fixed to the base portion 4 by the blade support portion 7 of one blade body 11, and the convex portion 61 protrudes toward the blade portion 5 of the other adjacent blade body 11.

[0079] As shown in the figure, the guide portion 6 is preferably configured to gradually approach and gradually recede from the cutting edge 51 of the adjacent guide-equipped blade 13. The guide portion 6 has, for example, a generally triangular shape, with its longest side (long side) connected to the blade support portion 7 and the remaining two sides forming a gently sloping convex portion 61 with an obtuse included angle. In other words, as shown in FIG. 10 , the guide portion 6 has a front guide portion 62 and a rear guide portion 63, each of which is roughly rectangular, with an imaginary line extending perpendicularly from the tip of the convex portion 61 to the long side as the boundary. For example, the front side of the guide portion 6 is longer than the rear side, and the tip of the convex portion 61 is slightly closer to the rear end. In other words, for example, the guide portion 6 is configured such that the front guide portion 62 is longer in the front-to-rear direction than the rear guide portion 63.

[0080] 12 and 13 are diagrams showing an example of the state of use (cutting) of the mowing structure according to embodiment 2, with Fig. 12 showing a schematic cross-sectional view and Fig. 13 showing a schematic top view of the state of cutting an object B (weeds in the illustration) growing on the ground A. Note that, although multiple objects B will get between adjacent guided blade bodies 13 as will be described later, only one is shown here.

[0081] In the reaping structure 10, the blade section 5 is arranged long from front to back, so when the reaping structure 10 is pushed forward, the object B comes into contact with the cutting edge 51 along the long blade section 5, and is cut as the blade section 5 moves forward. In this example, if there is a stone or the like in front of the reaping structure 10, the attachment section 71 of the long blade section 5 will collide with the stone in front, preventing damage to the cutting edge 51. In the reaping structure 10, the cutting edge 51 faces diagonally upward, so the cutting edge 51 cuts into the weeds at an angle, and a force is applied to the weeds in a direction that peels off the fibers.

[0082] In the reaping structure 10, the front end of the blade section 5 is positioned laterally relative to the rear end, so it pinches and cuts from the rear and sides between the blade section 5 and the guide section 6, making cutting easier. Also, because the front end of the blade section 5 is positioned lower than the rear end and faces downward, the cutting edge that cuts into the stems of weeds moves upward when the reaping structure 10 moves forward, making cutting easier.

[0083] The reaping structure 10 includes a guide portion 6 that is long in the front-rear direction, so that the object B is aligned between the blade portion 5 and the guide portion 6, making it easier to cut.

[0084] The guide portion 6 has a protrusion 61, which gradually approaches and then moves away from the cutting edge 51 of the adjacent guided blade body 13. This allows the weeds to be cut at the approaching position and then easily released after cutting, as shown in the figure. In particular, if weeds that could not be cut enter the area between the rear side of the blade portion 5 and the base portion 4 in a top view (the area indicated by the arrow in Figure 13), if the guide portion 6 does not have a rear guide portion 63, the weeds will get caught on the guide portion 6 and will not be easily released even if the mowing structure 10 is moved backward. In contrast, if the guide portion 6 has a rear guide portion 63, the weeds that could not be cut can be guided forward in accordance with the backward movement of the mowing structure 10, allowing them to be released smoothly. The released weeds can then be mowed by moving the mowing structure 10 forward again.

[0085] In the reaping structure 10, the convex portion 61 of the guide portion 6 partially blocks the area above the cutting edge 51, so that, as shown in the figure, the portion of the target object B near the upper end is bent by the tip of the convex portion 61, for example, to an angle that reduces cutting resistance, and then the cutting edge 51 begins to cut into the target object, making cutting easier. In addition, an escape space S is provided between the cutting edge 51 and the guide portion 6 and the blade support portion 7, allowing dead branches and the like to escape.

[0086] In this way, the mowing structure 10 can perform grass cutting work in the following order: the cutting edge 51 hits the object B, the object B is bent, the cutting edge 51 cuts into the object B, and the object B is cut, and the object B can be bent and cut.

[0087] As in the first embodiment described above, when multiple pairs of blade bodies 11 and guide bodies 12 are provided and the blade bodies 11 and guide bodies 12 are arranged alternately, there is a risk that the object B or dead branches may become caught between the connecting portion 72 of one blade body 11 and the guide support portion 8 of the guide body 12 that guides the object B to the adjacent blade body 11. The reaping structure 10 of this embodiment is equipped with a guided blade body 13, and the blade support portion 7 also serves as the guide support portion 8 of the guide portion 6 that guides the object B to the adjacent blade body 5, thereby preventing this from happening.

[0088] <Modification 1 of Embodiment 2 of the reaping structure> 14 is a diagram showing a first modification of the second embodiment of the reaping structure according to the present invention. The guide-equipped blade body 13 of this example differs from the second embodiment in that the second part 712 of the attachment part 71 is formed separately. The guide part 6, the first part 711 of the attachment part 71, and the connecting part 72 can be integrally formed by cutting, bending, or the like using a single metal plate-like member. In the following explanation, explanations of points that overlap with the first and second embodiments will be omitted as appropriate.

[0089] The second portion 712 is made of a plate-like member. The second portion 712 has an accommodation portion 713 recessed in the thickness direction on the side facing the first portion 711. The first portion 711 and the second portion 712 each have a blade window portion 714 and a blade window portion 715. When the blade portion 5 is accommodated in the accommodation portion 713, the cutting edge 51 is exposed from the blade window portion 714 and the blade window portion 715.

[0090] The blade portion 5 may be fixed by a fastening member 91 at the front end side as shown in the figure, or may be fixed by a fastening member 91 at the rear end side as in the first and second embodiments.

[0091] In the above description, an example has been described in which the reaper 1 and the reaping structure 10 are used to cut weeds as the object B, but it goes without saying that they may also be used to cut rice and the like.

[0092] The above describes the embodiments and modifications of the reaping structure and reaper according to the present invention, but these are merely examples of the present invention and the present invention is not limited to these. The present invention includes combinations of the above embodiments and their modifications, as well as various other modifications. Various additions, modifications, and partial deletions are possible within the scope of the conceptual idea and spirit of the present invention, which can be derived from the content defined in the claims and their equivalents. [Explanation of symbols]

[0093] 1...reaper, 10...reaping structure, 11...blade body, 12...guide body, 13...blade body with guide, 2...gripping portion, 3...grounding portion, 31...main body, 32...foot portion, 4...base portion, 41...front end portion, 42...upper end portion, 5...blade portion, 51...blade tip, 6...guide portion, 61...convex portion, 7...blade support portion, 71...mounting portion, 711...first portion, 712...second portion, 72...connecting portion, 8...guide support portion, 91...fastening member.

Claims

1. 1. A manual mowing structure for mowing an object, comprising: The posterior base and a front blade secured to the base; The cutting edge of the blade is directed obliquely upward. A harvesting structure characterized by:

2. a guide portion having a protrusion disposed adjacent to the blade portion; The guide portion is fixed to the base portion so that the protrusion protrudes toward the blade portion.

2. The mowing structure of claim 1 , wherein:

3. The guide portion has a protruding portion located above the blade portion, A first relief space is provided between the guide portion and the cutting edge of the blade portion.

3. The mowing structure of claim 2, wherein:

4. The blade portion is long in the front-rear direction, and the front end side is located laterally and below the rear end side.

2. The mowing structure of claim 1 , wherein:

5. a blade support portion that supports the blade portion, The blade support portion has a V-shape with an acute angle between a mounting portion for detachably mounting the blade portion and a connecting portion for connecting the blade portion to the base portion.

3. The mowing structure of claim 2, wherein:

6. a plurality of blade bodies each including the blade portion and the blade support portion that supports the blade portion; The guide portion is fixed to the base by the blade support portion of one of the blade bodies, and the protrusion protrudes toward the blade portion of the adjacent other blade body.

6. The mowing structure of claim 5, wherein:

7. A mowing structure according to any one of claims 1 to 6 is provided. A reaper characterized by:

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