JP3107278U - Hole digger - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use an instrument used for planting bulbs such as taro and potato with respect to a cocoon on which a multi-film is stretched, and has an excellent excavation function and a cutting function, and a cut film piece is discharged soil A digger that is not discharged out of the apparatus is also provided.
SOLUTION: An excavation part 1, an operation part 2, and a needle part 3 are provided, and the excavation part 1 combines a pair of half cylinders 12a and 12b each provided with a blade 11 at a lower end thereof to form a cylinder as a whole. The upper half-cylinder body is overlapped and pivoted (pivoting shaft 13), and the half-cylinders are connected so that the lower part can be opened and closed freely. An arm portion 21 formed by extending an upper portion of the half cylinder body far from the pivot axis upward, and a gripping portion 22 provided with an opening / closing operation mechanism for the half cylinder body interposed between the arm portions. The needle portion 3 is configured to connect the base portion 32 to an appropriate portion of the operation portion, and to hang a film holding rod 31 having an appropriate length at the center of the excavation portion, and to form a piercing portion having a return portion at the tip. .
[Selection] Figure 1

Description

  The present invention relates to a digger used for planting bulbs such as taro and potatoes against a cocoon on which a multi-film is stretched.

  In order to plant root vegetables and bulbs such as taro and potato on a cocoon covered with multifilm, the film must be cut into a circular shape and a hole for planting bulbs and the like must be formed.

  As an instrument used for the above-mentioned agricultural work, Japanese Utility Model Laid-Open No. 5-91298 (Patent Document 1) is provided with a cutting blade at the tip of a cylindrical body as a conventional technique (equipped with a piercing needle at the center of the cutting blade ( FIG. 9) of the same document is disclosed, and as this improved instrument, an instrument in which a film is cut by heat melting and a part of the circumference is not cut is proposed.

  In addition, as an instrument for forming a planting hole in a cocoon, Japanese Utility Model Laid-Open No. 6-81207 (Patent Document 2) combines a pair of half cylinders having a blade at the tip, the whole is substantially cylindrical, and the upper part is pivoted. The excavation part formed by being connected openably and closably, the arm part extending from the upper part of the half cylinder of the excavation part, and the outer cylinder and the end part serving as a handle between the arm parts serve as operation buttons. It is a double cylinder structure formed by the inner cylinder part, and it has an operation part composed of a gripping part with a striation that urges the half cylinder body in the direction of closing the half cylinder (the direction in which both arms are separated). An instrument is disclosed.

  Furthermore, as an instrument for performing film cutting and excavation at the same time, Japanese Patent Application Laid-Open No. 2004-129652 (Patent Document 3) has a cylindrical main body with both ends opened and a cutter blade formed at the lower end, and the upper part extends from the cylindrical main body. A frame provided with a handle at the upper end, a pushing member movably located in the cylindrical main body, and an extrusion mechanism in which a connecting rod guided by the frame is connected, and a needle on the lower surface of the pushing member An instrument provided with a ridge is disclosed.

FIG. 9 of Japanese Utility Model Laid-Open No. 5-91298. Japanese Utility Model Publication No. 6-81207. FIG. 3 of Japanese Patent Application Laid-Open No. 2004-129652.

  The instrument described in Patent Document 1 is a film cutting instrument and does not have a drilling function. The instrument described in Patent Document 2 does not have a film cutting function. The instrument described in Patent Document 3 has both a film cutting function and a digging function, but is not necessarily an easy-to-use instrument.

  That is, since the instrument described in Patent Document 3 simply pushes the cylindrical main body into the ridge and pulls it out as a digging function, there is a risk that the soil will not be retained during the pulling out. In addition, the cut film pieces are stored in the needle-like projections, but when the hugging soil is excluded from the cylindrical main body, the cut film pieces are pressed against the upper surface of the soil and discharged together with the discharged soil. The inconvenience that the cut film piece is mixed with the discharged soil is likely to occur.

  Therefore, the present invention proposes a digger that has an excellent excavation function and a cutting function, and in which the cut film piece is not discharged out of the instrument together with the discharged soil.

  The drilling machine according to the present invention includes an excavation part, an operation part, and a needle part, and the excavation part is formed in a cylindrical shape by combining a pair of semi-cylindrical bodies having a blade at the lower end. In addition, the upper part of the half cylinder is overlapped and pivoted, and the half cylinder is formed so that the lower part can be opened and closed freely, and the operation part is far from the pivot axis in the half cylinder. The arm portion is formed by extending the upper portion of the position upward, and a gripping portion interposed between the arm portions by incorporating a half-cylinder opening / closing operation mechanism. It is connected to an appropriate location, a film holding rod having an appropriate length is suspended from the center of the excavation portion, and a piercing portion having a return portion at the tip is formed.

  Thus, when the lower part of the semi-cylindrical body of the excavation part is opened, the film is cut and pierced into the needle part when the film is pushed from above into a predetermined part (planting part such as a bulb) where the film is stretched. At the same time, the soil below the cut film piece fits in the space surrounded by the half-cylinder, and when the half-cylinder is closed, the soil is firmly held by the half-cylinder. Therefore, the holding soil is discharged at the opening of the semi-cylindrical body, and the cut film piece is held by the holding hook of the needle portion.

  The hole digger according to the present invention has the above-described configuration, and since the heel soil is held and pulled out simultaneously with the cutting of the film, the hole can be reliably digged in the ridge where the film is stretched. When the excavated soil is removed, the cut film pieces are not discharged together with the removed soil.

  Next, an embodiment of the present invention will be described. The excavator of the illustrated embodiment includes an excavation part 1, an operation part 2, and a needle part 3.

  The excavation part 1 combines a pair of half cylinders (semi-cylindrical bodies) 12a and 12b provided with a blade 11 at the lower end to form an overall cylinder, and superimposes the upper parts of the half cylinders 12a and 12b. It is formed by pivoting, and the lower part of the semi-cylindrical bodies 12a, 12b is opened and closed freely like a bowl with the pivot shaft 13 as the center.

  The operation part 2 is composed of an arm part 21 and a gripping part 22, and the arm part 21 is located far from the pivot shaft 13 so that the half cylinders 12a and 12b that are pivoted can be easily opened and closed. The upper portions of the half cylinders 12a and 12b are formed by extending upward.

  The gripping part 22 is interposed between the arm parts 21 and has a double cylinder structure formed by an outer cylinder 23 serving as a handle and an inner cylinder 25 having an end serving as an operation button 24. A striation that energizes the semi-cylindrical bodies 12a and 12b in a closing direction is provided.

  The needle portion 3 is provided with a film holding rod 31 that is located at the center of the half cylinders 12a and 12b and whose tip portion projects downward from the half cylinders 12a and 12b. In order to fix and eliminate the protruding state of the film holding rod 31 when not in use, the base of the film holding rod 31 was bent into an L shape, and the base portion 32 was formed on the arm portion 21. It fixes to the vertically long hole 33 using the set screw body 34. Further, the tip of the film holding rod 31 is formed in a piercing portion 35 that is sharpened and provided with a return portion.

  Thus, the outer cylindrical body (grip) 23 of the gripping part 22 is gripped and the operation button 24 is pressed with the thumb to open the lower part of the half cylindrical bodies 12a, 12b of the excavating part 1 (FIG. 2). ), And is pushed from above into the planting site in the ridge B on which the film A is stretched. The film A is cut by the blade 11 by this pushing, and the cut piece a is pierced into the needle portion 3. At the same time, when the soil b below the cut film piece a is placed in the space surrounded by the half cylinders 12a and 12b and the pressing force of the operation button 24 is released, the half cylinder 12a is caused by the urging force of the ridges in the gripping portion 22. 12b is closed, and the soil b is firmly held by the half cylinders 12a and 12b.

  Therefore, when the tool is pulled out from the heel B, a hole C for planting is drilled in the heel B, and the soil b held by the tool presses the operation button 24 to move the half cylinders 12a and 12b. Open and discharge. Further, the cut film piece a is held in a state where it is stuck in the film holding bar 31 of the needle part 3, and even if it falls downward, it does not fall off due to the presence of the return part.

1 is an overall perspective view of an embodiment of the present invention. Explanatory drawing of the same state of use (by plugging into the ridge before digging). Explanatory drawing of the same usage state (state after drilling).

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Excavation part 11 Blade 12a, 12b Half cylinder 13 Pivoting shaft 2 Operation part 21 Arm part 22 Gripping part 23 Outer cylinder 24 Operation button 25 Inner cylinder 3 Needle part 31 Film holding rod 32 Base 33 Vertically long hole 34 Stop Screw body 35 Piercing part

Claims (3)

  Combining a pair of half-cylinders with blades at the lower end to form a cylinder, and overlapping the upper half-cylinders and pivoting them, the half-cylinders are connected so that the lower part can be opened and closed freely. And an arm portion formed by extending upward the upper portion of the half cylinder that is far from the pivot axis, and an opening / closing operation mechanism for the half cylinder is incorporated between the arms. An operation part with a gripping part and a base part connected to an appropriate part of the operation part, a film holding rod of an appropriate length is suspended at the center of the excavation part, and a piercing part having a return part at the tip is formed A digger characterized by comprising a needle portion.   2. A digger according to claim 1, wherein a vertically long hole is formed in the arm portion, and a base portion of the piercing portion is mounted and fixed at a desired position of the vertically long hole so that the vertical position of the needle portion is adjustable.   The gripping part is a double-cylinder structure formed with an outer cylinder that serves as a handle and an inner cylinder that uses the end as an operation button. The digger according to claim 1 or 2.

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