JP2010057436A - Grass remover - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a grass remover which improves work efficiency and reduces work load by quickly returning to an original position after removing grass or the like and removing the grass or the like from the root by operation by foot movement. <P>SOLUTION: The grass remover 1 includes an operating portion 2, a movable portion 3 rotatably coupled to the other end of the operating portion 2, and biasing means 4 which is attached to the coupling portion of the operating portion 2 and the movable portion and applies biasing force to the movable portion 3. The movable portion 3 has a plucking blade portion 7 in which a notch 7a is formed, a stepping portion 8 which receives force from outside, and a supporting portion 9 disposed therebetween. When the stepping portion 8 is stepped on by a foot, the movable portion 3 rotates forward wherein the supporting portion 9 serves as a pivot point. When the movable portion receives the biasing force of the biasing means 4 which acts in the direction opposite to the forward rotation, the movable portion rotates reversely. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a weeding device for extracting or cutting out weeds and the like growing on soil or lawn from the root.

Weeds that grow on soil and lawns need to be removed from their roots in order to inhibit the growth of lawns and the like, and thus breeding has been proposed. For example, in the weeding instrument of Patent Document 1, the operation part is bent in an L shape, a handle is attached to the end that is longer than the bent part, and a stepping part is attached in the vicinity of the bent part. The end portion has a structure in which the tip end portion is crushed to form a V-shaped cutout portion, and a reinforcing member is obliquely attached to the side bent in an L shape. In this weeding device, grass or the like is sandwiched in a V-shaped notch formed at the tip of the weeding device, and by applying the force to pull the handle to the body with the bent portion as a fulcrum, the grass or the like is removed. Can be pulled out to push up.
Further, in the weeding device of Patent Document 2, a hollow cylindrical main pipe having a connecting rod capable of moving up and down is provided inside, and an operation grip provided on the upper part of the main pipe is connected to the connecting rod. It has a structure in which an openable and closable chuck means that pierces the ground and pinches the roots of weeds is attached to the lower part. In this weeding device, grass or the like is sandwiched in the chuck means, and the grass or the like can be pulled up by opening and closing the chuck means by moving the connecting rod up and down with an operation grip.
Utility Model Registration No. 3014565 Utility Model Registration No. 3040974 Publication

  However, in the conventional weeding devices such as Patent Document 1 and Patent Document 2 described above, after the weeds have been extracted, force must be applied by hand in order to return to the original state. For this reason, there is a problem that labor is required other than the extraction work, the work load is large, and it takes time to return to the original state, so that the work efficiency is poor. Moreover, since it is a structure which extracts grass etc. by manual operation, the burden with respect to a hand is large. In particular, Patent Document 2 does not use the lever principle, so the burden on the worker is very large. In addition, it is effective to dig out the roots and vines of weeds and the like as deeply as possible (for example, it is effective to remove the roots with a shovel). Can't be extracted (the operation part is bent so much that the extraction blade part is inserted so as to cross the weeds and cut off in the middle and cannot be extracted from the root). The work burden is large.

  Therefore, an object of the present invention is to provide a blade portion for extraction to the root of grass, etc., and remove grass (vines) etc. from the root by foot movement, and after removing the grass etc., without burdening the operator. An object of the present invention is to provide a weeding device that can quickly return to its original position and continuously weed.

  According to a first aspect of the present invention, there is provided a weeding instrument comprising: an operating portion having a handle at a tip; a movable portion rotatably connected to the other end of the operating portion; and the operating portion and the movable portion. A weeding instrument that is attached to a connecting part and includes a biasing means that applies a biasing force to the movable part, wherein the movable part includes a blade part for extraction and a stepping part that receives external force at the other end. And a support part disposed between the extraction blade part and the stepping part, and by putting a foot on the stepping part and applying a force of weight, the support part is rotated forward as a fulcrum, It is reversely rotated by the urging force of the urging means acting in the reverse direction to the normal rotation.

  According to the present invention, while grasping the handle of the operation unit with a hand, the foot is placed on the stepping portion, and against the urging means of the urging means, the extraction blade is placed on the grass root or the ground surface. Aim for the roots and stems to stretch and put your weight on the foot. When the support portion comes into contact with the ground or the like, the extraction blade portion of the movable portion is rotated forward with the support portion as a fulcrum, and the extraction blade portion that pierces into the ground is brought out of the ground while holding grass or the like. By doing so, grass and the like are extracted from the root. When the foot is released from the stepping part, the movable part rotates backward by the urging force of the urging means, and the movable part returns to the original state. Therefore, the weeding operation can be continuously performed without performing the operation after the movable portion is moved.

  The weeding instrument according to claim 2 of the present invention is characterized in that the operating portion is provided with a step base on the stepping portion for pushing the extraction blade portion with a foot.

  According to the present invention, by providing a step base for pushing the extraction blade portion into the ground with a foot, the extraction blade portion can be inserted deeply, but provided separately on the stepping portion. Therefore, there is no adverse effect such as idling on the operation of the stepping portion.

  According to a third aspect of the present invention, the weeding instrument is a roller in which the support portion is rotatably provided with respect to the movable portion, or is detachable with respect to the movable portion. Features.

  According to the present invention, since the support portion is a roller provided to be rotatable with respect to the movable portion, the weeding tool can be moved by rolling the support portion to the ground or the like. As a result, the weeding device can be easily carried and the burden of carrying it is reduced. In addition, since the support portion can be attached to and detached from the movable portion, for example, even when the support portion serving as a fulcrum sinks deep because the insertion surface such as the ground is soft, the support portion having a relatively large shape can be provided. By exchanging and mounting, the extraction work can be performed without any trouble.

  In the weeding instrument according to claim 4 of the present invention, the movable part is connected to the lower side of the operation part by rotating a shaft, and the urging means connects the movable part and the operation part in the vertical direction. It is a tension coil spring.

  According to the present invention, it is not necessary to attach the urging means to the place where the urging means is inserted into the soil, and the insertion angle of the movable part extraction blade part into the soil is positioned directly below the operation part, Even in the case where it is positioned further rearward, the tension coil spring as the urging means functions to reliably return to the position.

  In the weeding device of the present invention, when a foot is applied to the stepping part and the force of weight is applied, the extraction blade part of the movable part rotates forward with the support part as a fulcrum to extract the grass roots, vines, stems, etc. The reverse rotation by the urging force of the urging means acting in the reverse direction to the normal rotation automatically returns to the original state, so that labor for returning to the original state is not required and the work load is reduced. At the same time, the work efficiency is improved because the work is taken out immediately after the completion of the work. Moreover, since the structure is such that the movable part is rotated by stepping on the foot and the grass or the like is extracted, the grass or the like can be extracted with a stronger force than the manual operation.

  Hereinafter, embodiments of the weeding device of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is an external perspective view showing a weeding device according to an embodiment of the present invention. 2 is a front view of the dotted line portion of FIG. 1, and FIG. 3 is a side view of the dotted line portion of FIG.

  As shown in FIGS. 1 to 3, the weeding device 1 includes an operation unit 2, a movable unit 3 connected to the operation unit 2, and a biasing unit 4 that returns the movable unit 3 to its original position. With. This weeding device 1 will be described by taking as an example a case where deep-rooted weeds that reproduce on a lawn or the like are extracted from the root, but can be used to extract or cut vines that grow in the ground or on the ground. Is.

  The operation unit 2 is a hollow cylindrical pipe or the like. A handle 5 for supporting the weeding tool 1 by hand is provided at the upper end of the operation unit 2 and has a T-shape. The operation unit 2 is provided with a step base 10 that can apply a downward force to the extraction blade 7 by stepping on the foot. Thus, when inserting, not only the force of the hand but also the force of the foot is applied, and the extraction blade portion 7 can be inserted deeply. This is effective when the ground is hard. The operation unit 2 has a function capable of adjusting its length, and can be adjusted to an optimum height for each worker. For example, the height of the operation unit 2 can be adjusted so that the height of the handle 5 is close to the position of the operator's waist.

  The movable part 3 is connected to the other lower end of the operation part 2 via a shaft 6 and is rotatably supported. The movable part 3 has an extraction blade part 7 at one end, a stepping part 8 at the other end, and a support part 9 arranged between the extraction blade part 7 and the stepping part 8. ing. In the present embodiment, the support portion 9 is attached to the proximal end side of the extraction blade portion 7. The movable portion 3 is attached to the operation portion 2 so as to be substantially linear in a side view from the tip of the extraction blade portion 7 to the tip of the operation portion 2 on the handle 5 side. Thus, the extraction blade portion 7 is configured to be inserted in a substantially vertical direction with respect to the ground or the like.

  The extraction blade portion 7 is inserted into the ground or the like and sandwiches weeds or the like. As shown in FIGS. 2 and 3, the V-shaped notch 7 a in the front view and the tip thereof in the side view have an acute angle. Is formed. The stepping portion 8 is for stepping on with a foot at the time of extraction, and is formed in a plate shape as shown in FIG. 3 and is disposed at a substantially right angle with respect to the extraction blade portion 7 in a side view. The support portion 9 has a cylindrical shape and is disposed so as to face the biasing means 4 with the movable portion 3 interposed therebetween. The support portion 9 is attached to the movable portion 3 by welding or the like.

  The urging means 4 applies an urging force to the movable portion 3 to return the movable portion 3 rotated around the shaft 6 to the original position, and is wound around the shaft 6 that connects the operation portion 2 and the movable portion 3. A spring that is attached to rotate. A torsion coil spring is used, and one end 4a and the other end 4a of the spring 4 are engaged with the two projecting portions 12 and 12 of the operation portion 2, and the middle portion 4b of the spring is U-shaped. And is attached so as to press the base end side surface of the extraction blade portion 7. That is, the urging means 4 is arranged over the entire lateral direction of the movable part 3 and is in contact with the surface of the movable part 3 in the state before extraction, so that the extraction blade part 7 is provided with the support part 9 as a fulcrum. When forwardly rotated, the urging means 4 applies an urging force in the opposite direction to the forward rotation to the extraction blade portion 7, whereby the movable portion 3 quickly rotates backward after being extracted and returns to its original state. It is a structure to return. Here, the U-shaped intermediate portion 4b of the urging means 4 may be separated from the surface of the movable portion 3 before being extracted. In this case, it is only necessary that the biasing means 4 and the surface of the movable part 3 are in contact with each other while the movable part 3 rotates forward. The number of the torsion coil springs 4 is one, but two are used, one of which is engaged with the projecting portion 12 of the operation portion 2, and the other is on the proximal end surface of the extraction blade portion 7 or on the surface here. The intermediate portion may be wound around the shaft 6 and attached to the protrusions arranged. As described above, when the coil portion is wound around the shaft 6, the movable portion 6 rotated around the shaft 6 functions to strongly return to the original direction contrary to the rotated direction.

  Next, the operation of the weeding device according to the present invention will be described. 4-6 is a figure explaining the usage example of the weeding implement in this Embodiment, FIG. 4 is a figure which shows the state (before extraction) which pierced the weeding implement of FIG. FIG. 5 is a diagram showing a state where the stepping portion of the weeding device of FIG. 1 is stepped on with a foot (during extraction), and FIG. 6 is a state where the foot is separated from the stepping portion of the weeding device of FIG. 1 (after extraction). FIG.

  First, as shown in FIG. 4, in the state where the handle 5 of the operation unit 2 is grasped by hand, the extraction blade portion 7 of the weeding tool 1 is pierced in the vicinity of the grass or the like, aiming at its root. At this time, a foot is put on the step base 10 to add weight, and the extraction blade 7 is deeply pierced into the ground or the like. When inserting deeply, it is pierced so that the extraction blade part 7 is substantially perpendicular to the ground or the like. Next, as shown in FIG. 5, the stepping portion 8 below the step base 10 is stepped on with a foot, and the extraction blade portion 7 is normally rotated upward with the support portion 9 in contact with the ground or the like as a fulcrum (FIG. 5). Arrow direction in 5). The rotation of the movable portion 3 is to rotate against the urging force of the torsion coil spring 4. As a result, the extraction blade portion 7 pierced in the ground moves outside the ground while holding grass or the like. The grass is extracted from the root. After extracting the grass or the like, the foot may be released from the stepping portion 8, and the handle may be held in a state where it is directed downward. That is, when the movable portion 3 is lifted inward, the movable portion 3 rotates in the reverse direction about the shaft 6 by the biasing force of the biasing means 4, so that the movable portion 3 quickly returns to its original position as shown in FIG. Returns to the state (the state before extraction). As a result, there is no need for a force to return to the original state after extraction, and the extraction operation can be started immediately, so that the work load is reduced and the work efficiency is improved. In addition, since the extraction work can be performed almost completely from the beginning to the end, the burden on the waist is reduced. Further, since the extraction blade 7 rotates in the same direction with respect to the direction in which the step base 10 or the stepping portion 8 is put on (see the arrow in FIG. 5), the extraction blade 7 in the direction in which the weight is applied. Weeding can be done with safe work because there is no heading to the body.

  In the present embodiment, the support portion 9 is fixed to the movable portion 3 by welding or screws. However, as shown in FIG. 9, the support portion 49 can be rotated by the jig 40 with respect to the movable portion 3. It may be a roller attached to the. In this case, the weeding tool 41 can be moved by rolling the support portion 49 to the ground or the like. Thereby, the burden at the time of carrying a weeding implement is reduced.

(Second Embodiment)
FIG. 7 is a partial front view for explaining a weeding device according to the second embodiment of the present invention. The second embodiment is different from the first embodiment in which the extraction blade portion 7 has one cutout in that the extraction blade portion 7 has a plurality of cutouts. Other than that, since it is the same as that of the first embodiment, the same reference numerals as in the first embodiment are assigned, and the description thereof is omitted.

As shown in FIG. 7, the weeding tool 21 includes a movable part 3 connected to the end of the operation part 2 and a biasing means 4 attached to a connection part between the operation part 2 and the movable part 3. Have.
The movable portion 3 is connected to the operation portion 2 via a shaft 6 and is rotatably supported. The movable part 3 has an extraction blade part 27 at one end, a stepping part 28 at the other end, and a support part 29 arranged between the extraction blade part 27 and the stepping part 28. ing. In the weeding device 21 according to the present invention, the extraction blade portion 27 is formed with a plurality of V-shaped cutouts 27a when viewed from the front, so that a large number of grasses and the like are clamped and extracted in a single extraction operation. Work efficiency is further improved. Therefore, even for grasses and vines that grow so that many roots grow (for example, grass that grows near the grass such as golf courses, vines that grow on the ground and the surface of the ground, etc.) 27 can efficiently extract grass, vines, and the like, or can be cut out by the cutout 27a. When extracting vines, grass, etc. that grow on the ground surface, the step base 10 is not used, but the stepping portion 8 is operated with the foot and is extracted or cut off. Note that the step base 10 is arranged separately from the stepping portion 28, so that when the movable portion 3 having the extraction blade portion 27 is inserted deep into the ground, the stepped portion 28 is not moved to the upper position without operating the stepping portion 28. It is only necessary to put a foot on the step base 10 and gain weight, and the movable portion 3 is not rotated when it is inserted into the ground.

(Third embodiment)
FIG. 8 is a partial side view for explaining a weeding device according to a third embodiment of the present invention. The third embodiment is different from the first embodiment in which the support portion 9 is fixedly attached by welding or the like, in that the support portion is detachably attached. Other than that, since it is the same as that of the first embodiment, the same reference numerals as those of the first embodiment are assigned, and the description thereof is omitted.
As shown in FIG. 8, the weeding tool 31 is attached to the operation unit 2, the movable unit 3 coupled to the end of the operation unit 2, and the coupling unit between the operation unit 2 and the movable unit 3. Force means 4.

  The movable part 3 is connected to the other end of the operation part 2 via a shaft 6 and is rotatably supported. The movable part 3 has an extraction blade part 7 at one end, a stepping part 8 at the other end, and a support part 39 arranged between the extraction blade part 7 and the stepping part 8. ing. In the weeding tool 31 according to the present invention, the support portion 39 is attached to the movable portion 3 with the screw 30 and is detachable. Thereby, the support part 39 is easily replaced. Therefore, for example, even when the ground surface is soft due to rain or the like and the support portion 39 sinks deeply into the ground surface, the support portion 39 sinks by replacing the support portion 39 with a relatively large shape and mounting it. Thus, the extraction work can be performed without any trouble.

(Fourth embodiment)
FIG. 10 is a partial side view for explaining a weeding device according to a fourth embodiment of the present invention, and FIG. 11 is a schematic view of the weeding device of FIG. FIG. 12 is a diagram for explaining a usage example of the weeding device in the fourth embodiment.
The weeding device 51 of the fourth embodiment is a tension coil spring in which the urging means 54 is disposed between the stepping portion 58 and the protruding portion 52 of the operation portion 2 above the stepping portion 58.

  First, as shown in FIG. 11, the step base 50 of the present embodiment is attached in a V shape so as to project outward from the operation unit 2. From this, the foot can be applied to the left and right sides of the V shape by changing the stepping foot according to the place. This is also effective when the insertion place can be inserted only from one side, such as when there is a obstacle such as a tree, or when the weight is applied in the oblique direction of the extraction blade portion 7.

  The movable part 3 is connected to the other end of the operation part 2 via a shaft 6 and is rotatably supported. The movable part 3 has the extraction blade part 7 at one end, the foot part 58 at the other end, and the support part 9 disposed between the extraction blade part 7 and the foot part 58. ing. The stepping portion 58 is attached obliquely upward on the rear side of the operation portion 2, and a protruding portion 58 a to which the end portion 54 a of the urging means 54 is attached is provided on the upper surface of the operation portion 2. The tip of the extraction blade portion 7 is located on the operator side (the right side in FIG. 12, that is, the rear side of the operation portion 2) with respect to the extension line of the operation portion 2 (dotted line in FIG. 12).

  The urging means 54 is a tension coil spring that applies an urging force to the movable part 3 and returns the movable part 3 rotated about the shaft 6. One end 54 a and the other end 54 a of the spring 54 are operated respectively. It is attached to the protrusion part 52 of the part 2 and the protrusion part 58a of the stepping part 58. That is, when the stepping portion 58 is stepped on and a downward force is applied, the extraction blade portion 7 rotates normally with the support portion 9 as a fulcrum, but the urging means 54 is pulled to apply an upward urging force to the stepping portion 58. To give. Thus, the movable portion 3 has a structure that, after being extracted, quickly reversely rotates and returns to the original state. As described above, the biasing means 54 is disposed between the stepping portion 58 and the protruding portion 54a, so that the biasing means 54 enters the ground or the like when the movable portion 3 is inserted into the soil. There is no rust and fatigue. In addition, since a widely used tension coil spring is used for the urging means 54, a commercially available product can be used without special production. As a result, the production time is shortened and the production cost is low.

  Next, the operation of the weeding device according to the present invention will be described. As shown in FIG. 12, in the state where the handle 5 of the operation unit 2 is gripped by hand, the extraction blade part 7 of the weeding tool 51 is pierced in the vicinity of the grass or the like, aiming at its root. At this time, a foot (right foot in the figure) is put on the V-shaped step base 50 to add weight, and the extraction blade portion 7 is pierced deeply into the ground or the like. In the present embodiment, the tip of the extraction blade portion 7 is positioned on the operator side (right side in FIG. 12) with respect to the extension line (dotted line in FIG. 12) of the operation unit 2, so that it is reliable against the ground or the like. It is stabbed so that it may become perpendicular | vertical, and can be inserted deeply with respect to the roots, such as a grass. Next, the foot is switched to the stepped portion 58 below the step base 50, and the extraction blade portion 7 is normally rotated upward with the support portion 9 in contact with the ground or the like as a fulcrum (see FIG. 5). By this rotation, the extraction blade portion 7 pierced in the ground goes out of the ground while holding the grass and the grass is extracted from the root. After the grass or the like is extracted, the foot may be released from the stepping portion 58 and held in a state where the handle is held down as it is. That is, when the movable portion 3 is lifted inward, the movable portion 3 reversely rotates around the shaft 6 by the urging force of the urging means 54, and thus quickly returns to the original state (the state before extraction).

  In the present embodiment, the urging means 54 is only one tension coil spring disposed between the stepping portion 58 and the protruding portion 52 above the stepping portion 58, but as shown in FIG. As the urging means 64, two of the spring 64a and the spring 64b of the first embodiment may be used. That is, the urging means 64 is applied to the tension coil spring 64 a disposed between the stepping portion 68 and the protrusion 62 above the stepping portion 68, and the shaft 6 that connects the operation portion 2 and the movable portion 3. It is comprised from the torsion coil spring 64b attached so that it may wind. In this case, since the urging means 64 is two, the urging force with respect to the movable part 3 is strengthened, and the movable part 3 can be immediately returned to the original state. Further, when either one of the urging means 64 does not function, for example, the U-shaped intermediate portion of the torsion coil spring 64b is separated from the surface of the movable portion 3 in the state before being extracted, and the movable portion 3 rotates forward. In the case where the surface of the movable part 3 is not in contact with each other, the torsion coil spring 64b does not apply a biasing force to the movable part 3, but the tension coil spring 64a applies a biasing force to the movable part 3. In this way, it is possible to secure the role of giving each other an urging force.

  As mentioned above, although embodiment of this invention was described based on drawing, specific structure is not restricted to these embodiment, It can change in the range which does not deviate from the summary of invention. For example, the extraction blade portion 7 has a V shape, but is not limited to this, and it is possible to provide a lock means for preventing the rotation of the movable portion 3 depending on the implementation. Is possible.

It is an external appearance perspective view which shows the weeding implement which concerns on the 1st Embodiment of this invention. It is a front view in the dotted-line part of FIG. It is a side view in the dotted-line part of FIG. It is a figure explaining the usage example (before extraction) of the weeding implement in the said 1st Embodiment. It is a figure explaining the usage example (during extraction) of the weeding implement in the said 1st Embodiment. It is a figure explaining the usage example (after extraction) of the weeding tool in the said 1st Embodiment. It is a partial front view explaining the weeding implement in the 2nd Embodiment of this invention. It is a partial side view explaining the weeding implement in the 3rd Embodiment of this invention. It is a partial side view explaining the weeding implement in the modification of this invention. It is a partial side view explaining the weeding implement in the 4th Embodiment of this invention. It is the schematic diagram which looked at the weeding implement of FIG. 10 from the arrow X. It is a figure explaining the usage example of the weeding implement in the said 4th Embodiment. It is a partial side view explaining the weeding implement in the modification of this invention.

Explanation of symbols

1, 21, 31, 51 Weeding tools,
2 Operation part,
3 moving parts,
4, 64b biasing means (torsion coil spring),
54, 64a biasing means (tensile coil spring),
5 Handle,
6 axes,
7,27 Extraction blade,
8, 28, 58, 68
9, 29, 39, 49 support part,
10,50 step base

Claims (4)

An operation unit provided with a handle; a movable unit rotatably connected to the operation unit; and an urging means for applying an urging force to the movable unit.
The movable part has a sampling blade part, a foot step part that puts a foot on and applies a force of weight, and a support part disposed between the extraction blade part and the foot step part, A weeding instrument characterized in that it is rotated forward with the support portion as a fulcrum by putting a foot on it and applying a force of weight, and reversely rotated by the urging force of the urging means acting in the opposite direction to the forward rotation.   The weeding device according to claim 1, wherein a step base for pushing the extraction blade portion with a foot is provided on the stepping portion.   The weeding device according to claim 1, wherein the support portion is a roller provided rotatably with respect to the movable portion, or is detachable with respect to the movable portion. The movable portion is connected to a lower side of the operation portion by rotating a shaft, and the biasing means is a tension coil spring that connects the movable portion and the operation portion in the vertical direction. Weeding equipment.

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