JP7300756B2 - Weeder - Google Patents

Description

The present invention relates to a weeding tool for paddy fields.

A weeding tool that can be held by a worker to weed weeds growing in paddy fields is a flat plate-like main body and a plurality of wires installed on the underside of the main body. and a rod-shaped handle extending upward from the main body (see Patent Document 1). According to the technique disclosed in Patent Document 1, when the main body part is moved left and right while floating on the top surface of the plowed soil, weeds with roots can be folded into a dogleg shape by the wire, and the weeds can be killed. becomes possible.

However, in the technique of Patent Document 1, since the main body is flat, if the soil is uneven, the front end side in the movement direction tends to dig into the soil, making it difficult to work smoothly. In addition, when the main body is lifted out of water to move it between rice plants, since the main body is in the form of a flat plate, the weight of water, mud, etc. is likely to be applied to the upper surface of the main body. was there. Furthermore, since weeding is performed by the installed wire, it is necessary to handle the wire carefully so as not to stretch or break it.

JP 2011-254716 A

Therefore, in view of the above circumstances, it is an object of the present invention to provide a weeding tool that is easy to handle and that enables easy weeding work in paddy fields.

In order to solve the above problems, the weeding tool according to the present invention includes:
"A weeding tool comprising a main body portion extending in the left-right direction and a rod-shaped handle portion extending upward from the main body portion,
The main body is
a pair of frames that extend in the left-right direction and are spaced apart in the depth direction, and the handle portion is attached at the center in the left-right direction so as to be rotatable about the axis in the depth direction; ,
a pair of flat plate-like first connecting plate portions connecting the left and right ends of the pair of frames, respectively;
a pair of flat plate-like guide plate portions extending obliquely upward and outward from the respective outer edges in the left-right direction of the pair of first connecting plate portions;
and a plurality of blade plate portions extending downward while curving from each of the pair of first connecting plate portions and arranged in rows in the depth direction.

Here, the depth direction of the weeder is a direction perpendicular to the left-right direction and the up-down direction.

When weeding weeds in a paddy field using the weeding tool of this configuration, between the rice plants planted at regular intervals in a direction parallel to one bank in the paddy field and a direction perpendicular to the bank After positioning the main body, the main body is placed on the plowed soil that is the portion of the soil below the water surface of the paddy field. At this time, the left-right direction of the main body is directed parallel to the ridge, and a plurality of blade plate portions extending downward from the pair of first connecting plate portions of the main body are inserted into the soil. When the handle is held and the main body is moved in the left-right direction, weeds are mowed or dug up by a plurality of blade plate portions inserted in the cultivated soil. As a result, the weeds are separated from the soil and can be weeded.

When the main body of this weeding tool is moved in the left-right direction, the main body has guide plates extending obliquely upward at both ends in the left-right direction. It plays a similar role, and even if the top surface of the soil is uneven, the main body does not dig into the soil.

In addition, since the main body of the weeding tool is mainly composed of the pair of frames and the pair of first connecting plate portions connecting the ends of the pair of frames, the whole is formed in a frame shape. there is As a result, the main body has an opening penetrating vertically, and the opening makes it difficult for water, mud, and the like to accumulate on the main body. Therefore, when lifting the main body from water to move it between rice plants, the weight applied to the upper surface of the main body can be reduced compared to the case where the main body has a flat plate shape as in Patent Document 1. , the main body can be easily lifted out of the water.

Furthermore, since the handle portion is rotatably attached to the main body portion, even if there are irregularities in the plowed soil of the paddy field, the handle portion can be easily followed. There is no need to adjust the mounting angle between the main body and the handle even if there is a difference in height.

In addition, since the plurality of blade plate parts for weeding are plate-shaped, compared to the wire as in Patent Document 1, it can be made to be strong and rigid and difficult to break, and it is necessary to handle it carefully. do not have.

The weeding tool according to the present invention, in addition to the above configuration,
"The main body part
It is formed so that the depth direction becomes narrower as both ends in the left-right direction go outward.
It may be characterized as

According to this configuration, both ends of the main body in the left-right direction are tapered toward the outside, so that it is possible to easily pass through the rice stalks.

As described above, as an effect of the present invention, it is possible to provide a weeding tool which is easy to handle and which enables easy weeding of paddy fields.

1 is a front view of a weeder that is an embodiment of the present invention; FIG. (a) is a front view mainly showing the main body of the weeding tool, (b) is a right side view of (a), and (c) is a bottom view of (a). (a) is a perspective view showing the main body of the weeding tool from above, and (b) is a perspective view showing (a) from below. (a) is an explanatory diagram showing the usage of the weeding tool in a paddy field in a plan view, and (b) is an explanatory diagram showing (a) in a front view.

A weeding tool 1 according to an embodiment of the present invention will be described in detail below with reference to FIGS. 1 to 3. FIG. The weeding tool 1 of this embodiment includes a body portion 10 extending in the left-right direction and a bar-shaped handle portion 20 extending upward from the body portion 10 .

The body portion 10 includes a pair of frames 11 that extend in the left-right direction and are separated from each other in the depth direction, and a pair of flat plate-shaped second ends that connect both ends of the pair of frames 11 in the left-right direction. One connecting plate portion 12, a pair of flat plate-shaped guide plate portions 13 extending obliquely upward and outward from the outer edge sides in the left-right direction of the pair of first connecting plate portions 12, and a pair of first connecting plate portions A pair of flat plate-like second connecting plate portions 14 connecting the pair of frames 11 between the plate portions 12 and provided with a gap in the left-right direction, a pair of first connecting plate portions 12 and a pair of and a plurality of blade plate portions 15 extending downward from each of the second connecting plate portions 14 while curving.

The pair of frames 11 is shaped like a strip elongated in the left and right direction with the width direction facing up and down. The pair of frames 11 has bent portions 11a that are bent so as to approach each other within a certain distance from both ends in the left-right direction. Further, the pair of frames 11 has a bearing hole 11b penetrating in the depth direction at the center in the left-right direction (see FIG. 3). The bearing hole 11b is for attaching the handle portion 20 so as to be rotatable around the axis in the depth direction.

The pair of first connecting plate portions 12 connects the bent portions 11a at both ends of the pair of frames 11 in the left-right direction. Also, the pair of first connecting plate portions 12 are provided at the same height as the lower side of the frame 11 . Both ends of the first connecting plate portion 12 in the depth direction are bent upward, and the portions are attached to the frame 11 with bolts.

The pair of guide plate portions 13 extend so that the depth direction becomes narrower toward the outside from the end side of the first connecting plate portion 12 . The pair of guide plate portions 13 are provided so that both edges in the depth direction are aligned with extension lines of the bent portions 11 a of the frame 11 . The pair of guide plate portions 13 has vertical plate portions 13a extending upward from the edges in the depth direction. The guide plate portion 13 of this embodiment is configured integrally with the first connecting plate portion 12 .

The pair of second connecting plate portions 14 are provided at symmetrical positions with respect to the center of the pair of frames 11 in the left-right direction. Also, the pair of second connecting plate portions 14 are provided at the same height as the lower side of the frame 11 . Both ends in the depth direction of each of the second connecting plate portions 14 are bent upward, and these portions are attached to the frame 11 with bolts.

The plurality of blade plate portions 15 extend downward from the edge sides of the pair of first connecting plate portions 12 and the pair of second connecting plate portions 14 facing the center in the left-right direction of the body portion 10, and extend in the depth direction. are lined up. The plurality of blade plate portions 15 are formed by making diagonal cuts from the edges of the plate members that constitute the pair of first connecting plate portions 12 and the pair of second connecting plate portions 14 and folding them downward. is formed by Therefore, the blade plate portion 15 is configured integrally with the first connecting plate portion 12 and the second connecting plate portion 14 .

The plurality of blade plate portions 15 are provided so that the tips of the first connecting plate portion 12 and the second connecting plate portion 14 face the same direction. In addition, the plurality of blade plate portions 15 are provided so that the tips of the first connecting plate portion 12 and the second connecting plate portion 14 that are adjacent to each other face opposite directions (see FIGS. 2 and 3).

The body portion 10 is formed by bent portions 11a at both left and right ends of the pair of frames 11 and vertical plate portions 13a at both ends of the guide plate portion 13 in the depth direction, so that the depth direction becomes narrower as the left and right ends extend outward. It is formed to be The main body 10 is formed into a frame shape by a pair of frames 11, a pair of first connecting plate portions 12, a pair of second connecting plate portions 14, etc., and has a plurality of openings penetrating vertically. have.

The body portion 10 of the present embodiment is made of stainless steel. The main body 10 has a length of 300 mm to 400 mm in the left-right direction, a length of 150 mm to 180 mm in the depth direction, and a length of 80 mm to 120 mm in the depth direction at both ends in the left-right direction. Also, the height of the frame 11 is 10 mm to 20 mm. Furthermore, the guide plate portion 13 is inclined at an angle of 20 to 30 degrees with respect to the horizontal.

The handle portion 20 has a rod-shaped rod portion 21 , a grip portion 22 attached to the tip of the rod portion 21 , and a connecting portion 23 connecting the base end side of the rod portion 21 to the main body portion 10 . are doing. The rod portion 21 has a structure in which a plurality of pipes having different diameters are fitted together, and is configured to extend and contract between 1500 mm and 3000 mm, for example. The grip portion 22 is formed in a tubular shape and fitted onto the rod portion 21 . The connecting portion 23 is formed by a round bar.

The connecting portion 23 includes a shaft portion 23a extending horizontally in the depth direction, and an attachment portion 23b extending upward from one end of the shaft portion 23a and having an upper end attached to the base end of the rod portion 21. and have The shaft portion 23a is formed longer than the length of the main body portion 10 in the depth direction. The mounting portion 23b extends upward from one end of the shaft portion 23a, bends obliquely upward toward the shaft portion 23a, and extends vertically upward at a portion above the center of the shaft portion 23a. (see Figures 2 and 3).

In addition, the connecting portion 23 includes a plurality of projecting portions 23c protruding outward from the end portion of the shaft portion 23a near the mounting portion 23b, and upper and lower portions near the end portion of the shaft portion 23a opposite to the projecting portion 23c. and through holes (reference numerals are omitted). A snap pin 24 is attached to the through hole of the connecting portion 23 .

In this embodiment, the rod portion 21 is made of aluminum. Also, the grip portion 22 is made of rubber. Furthermore, the connecting portion 23 is made of stainless steel.

The weeding tool 1 of this embodiment is assembled as follows. First, the flat washer 25 is fitted to the shaft portion 23 a of the connecting portion 23 . Next, the tip of the shaft portion 23a is inserted through the bearing holes 11b of the pair of frames 11 of the body portion 10 from the outside in the depth direction, and projected outward through the bearing holes 11b of the frame 11 on the opposite side. . Then, another flat washer 25 is fitted to the tip of the shaft portion 23a, and the flat washer 25 is positioned closer to the frame 11 than the through hole of the shaft portion 23a. After that, by attaching the snap pin 24 to the through hole of the shaft portion 23a, the assembly of the weeder 1 is completed.

In the assembled weeding tool 1, the shafts 23a of the connecting parts 23 inserted through the bearing holes 11b of the pair of frames 11 can be rotated. In this state, the snap pin 24 mounted in the through-hole of the shaft portion 23a and the projection portion 23c projecting from the shaft portion 23a with the flat washer 25 therebetween are positioned on both outer sides of the pair of frames 11. , and the relative movement of the connecting portion 23 with respect to the main body portion 10 in the depth direction is restricted.

In the weeding tool 1 of this embodiment, in a state in which the handle portion 20 is vertically erected with respect to the main body portion 10, the handle portion 20 is rotated clockwise and counterclockwise around the axis in the depth direction centering on the shaft portion 23a. It is possible to rotate the handle portion 20 in an angle range of 80 degrees in each direction (right and left directions).

Next, how to use the weeding tool 1 of the present embodiment will be described mainly with reference to FIG. Here, a paddy field in which a plurality of rice stalks D are planted at regular intervals in a direction (horizontal direction) parallel to one bank of a paddy field A and a direction perpendicular to the bank (depth direction). A case of weeding A weeds will be described. Hereinafter, the space extending in the left-right direction between the rice stalks D arranged in the depth direction will be referred to as a "streak". In addition, the shaded portion in FIG. 4(a) indicates the area where weeding is not performed.

First, in a state where the worker E is positioned in the paddy field A, the weeding tool After positioning the main body part 10 of No. 1, the main body part 10 is placed on the plowed soil C, which is the part of the soil below the water surface B of the paddy field A. At this time, the left-right direction of the main body portion 10 is directed parallel to the ridge, and a plurality of blade plates extending downward from the pair of first connecting plate portions 12 and the pair of second connecting plate portions 14 in the main body portion 10 The part 15 is inserted into the plowing soil C.

Then, the operator E holds the handle portion 20 and moves the body portion 10 in the horizontal direction along the line. At this time, since the handle portion 20 is rotatably provided with respect to the main body portion 10, the operator E can hold the handle portion 20 that is extended leftward from the operator E without moving in the left-right direction. By changing the position, attitude, etc., the angle between the main body part 10 and the rod part 21 is changed, and the main body part 10 can be moved away from or closer to the operator. In other words, even if the worker E does not move in the horizontal direction, the body portion 10 can be moved in the horizontal direction while being placed on the upper surface of the soil C.

When the body portion 10 is moved in the left-right direction in this way, weeds are mowed or dug up by a plurality of blade plate portions 15 inserted into the soil C. As shown in FIG. As a result, the weeds are separated from the plowed soil C, and the weeds can be weeded.

In this weeding tool 1, when the body portion 10 is moved in the left-right direction, the guide plate portions 13 extending obliquely upward are provided at both ends of the body portion 10 in the left-right direction. 13 plays the same role as the tip of a sled, and the body part 10 does not dig into the soil C even if the top surface of the soil C is uneven.

In addition, in the weeding tool 1, both ends of the main body 10 in the left-right direction are tapered toward the outside. The body portion 10 can be easily moved in the left-right direction. In addition, the body portion 10 does not move beyond the rice stalks D aligned in the left-right direction to other streaks.

In this way, after weeding the weeds within the reach of the main body 10 on the left side of the worker E in a straight line, the main body 10 is pulled up from the water, and the main body 10 is positioned on the right side of the worker on the same line. Then, the body portion 10 is placed on the soil C. As shown in FIG. At this time, since the main body 10 is shaped like a frame and has a plurality of openings penetrating vertically, water and mud are less likely to accumulate on the main body 10 due to the openings. To easily lift up a main body part 10 from water by reducing the weight applied to the upper surface of the main body part 10 compared with the case where the main body part 10 is formed in a flat plate shape when pulling up the main body part 10 from the water for moving the body part 10.例文帳に追加can be done.

Then, on the right side of the worker E, similarly to the above, the main body 10 is moved laterally along the line to weed the weeds on the right side of the worker E along the line. Thereafter, the body portion 10 is pulled out of the water, the body portion 10 is positioned on the next line in the depth direction, and weeds on the line are weeded in the same manner as described above. In this embodiment, it is possible to weed a range of 6 m to 7 m in the left-right direction from the worker E as the center.

By repeating such work, weeds can be weeded in the depth direction within a predetermined width in the horizontal direction that the main body 10 can reach, without the worker E moving in the horizontal direction.

As described above, according to the weeding tool 1 of the present embodiment, the stem portion 21 of the handle portion 20 can be expanded and contracted, and the handle portion 20 is rotatably attached to the main body portion 10 . The lower surface of the can always be brought into contact with the upper surface of the plowed soil C in the paddy field A, the weeding efficiency can be improved, and a wide range of weeding work centered on the worker E can be performed.

In addition, according to the weeding tool 1 of the present embodiment, since the handle portion 20 is rotatably attached to the main body portion 10, even if the soil C has unevenness, it can be easily followed, and the work can be performed. Even if the person E has a height difference, there is no need to adjust the mounting angle between the main body part 10 and the handle part 20. - 特許庁

In addition, according to the weeding tool 1 of the present embodiment, the main body 10 is sized to fit between the rice stalks D and is formed in a frame shape, so that it is compact and lightweight. Therefore, it is possible to reduce the resistance of water and mud, improve work efficiency, and make it easy to handle even for elderly people and women.

Furthermore, according to the weeding tool 1 of the present embodiment, since the main body 10 is formed in a frame shape, it has an opening penetrating vertically. It can be made difficult to accumulate, and resistance to pulling up from water can be reduced in moving work between rice plants.

Further, according to the weeding tool 1 of the present embodiment, the handle portion 20 is rotatably attached to the main body portion 10, and the stem portion 21 of the handle portion 20 can be expanded and contracted. But weeding can be done.

In addition, according to the weeding tool 1 of the present embodiment, since the plurality of blade plate portions 15 for weeding are plate-shaped, compared to the case of weeding using a wire, the strength and rigidity are high, and damage does not occur. It can be difficult and does not need to be handled carefully.

Although the present invention has been described above with reference to preferred embodiments, the present invention is not limited to the above embodiments, and various improvements and design changes are possible without departing from the scope of the present invention. is.

For example, in the above embodiment, the handle portion 20 is attached to the main body portion 10 so as to be rotatable about the axis in the depth direction. In addition to the surroundings, the handle part 20 may be attached so as to be rotatable around the axis in the vertical direction. As a result, the versatility of the weeding tool 1 can be further enhanced.

Further, in the above embodiment, the weeding tool 1 is used for weeding the paddy field A, but the weeding tool 1 is not limited to this and may be used for a field.

1 weeding tool 10 body portion 11 frame 11a bent portion 11b bearing hole 12 first connecting plate portion 13 guide plate portion 14 second connecting plate portion 15 blade plate portion 20 handle portion 21 rod portion 22 grip portion 23 connecting portion 23a shaft portion 23b Mounting portion 23c Protruding portion 24 Snap pin 25 Flat washer A Paddy field B Water surface C Crop soil D Rice plant E Worker

Claims (2)

A weeding tool comprising a main body portion extending in the left-right direction and a rod-shaped handle portion extending upward from the main body portion,
The main body is
a pair of frames that extend in the left-right direction and are spaced apart in the depth direction, and the handle portion is attached at the center in the left-right direction so as to be rotatable about the axis in the depth direction; ,
a pair of flat plate-like first connecting plate portions connecting the left and right ends of the pair of frames, respectively;
a pair of flat plate-like guide plate portions extending obliquely upward and outward from the respective outer edges in the left-right direction of the pair of first connecting plate portions;
A weeder comprising a plurality of blade plate portions extending downward from each of the pair of first connecting plate portions while curving and arranged in rows in the depth direction. The main body is
2. The weeding tool according to claim 1, wherein both ends in the left-right direction are formed so that the depth direction becomes narrower toward the outside.

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