JPH099701A - Weeding tool - Google Patents

Abstract

PURPOSE: To provide an easily usable weeding tool having light weight by simplifying the structure of the weeding tool usable by a worker keeping the standing posture. CONSTITUTION: This weeding tool is composed of an operation shaft S having a length operable by a worker keeping the standing posture and a grass-picking part C capable of clamping a grass together with its root. The grass-picking part C is provided with the 1st and the 2nd base frames 1, 2 having clamping claws 4, 5 pivoted in a state connected with each other. A grass is clamped together with its root by the clamping claws 4, 5 by bending the 2nd base frame 2 and plucked out with the claws 4, 5 locked in a state clamping the grass by the engagement of a checking piece 13 with a locking piece 15.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of a weeding instrument that allows a user to pick and operate grass while standing upright.

[0002]

2. Description of the Related Art Conventionally, as a weeding instrument of this type, a user has a control shaft having a length such that a user can grasp the grip part on the upper end side by hand and push it down while standing upright. A pair of left and right chuck arms are provided on the side so that they can be moved close to or away from each other by a link mechanism, and as the user pushes down on the operation shaft, the lower end side of the chuck arm moves closer by the link mechanism, and the grass grows. It is known that the grass is pulled out from the ground by sandwiching it between the lower ends of the chuck arms (Suikaihei 4-74901).

In the weeding tool, since each chuck arm is provided with a link mechanism so as to be able to bend and expand, not only a large force is required to push down the operation shaft to bend and move each chuck arm, but also the mechanism as a whole is complicated. It is heavy in weight. In addition, since the grass is pulled out by sandwiching the grass claw between the lower ends of the chuck arms, if the grass is strong, the grass may be cut off and the root cannot be completely removed.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a weeding instrument which can be lightened by mechanical simplification, can be easily used, and can firmly remove roots even if they are strong grass. To aim.

[0005]

In the weeding tool according to claim 1 of the present invention, an operating shaft having a length that allows a user to operate by gripping a grip portion on the upper end side of the shaft while standing upright, And a grass picking mechanism which operates so as to hold the grass together with the operation shaft when the operating shaft is pushed down. The grass picking mechanism is first and second bearings that are axially connected to each other by longitudinally opposed flanges. 2 base frames, grass-holding claws protrudingly mounted so as to face downward from the lower end sides of the respective base frames, and shaft upper ends that are installed upright vertically above the upper end side of the first base frame. Side of the operation shaft is assembled and inserted into the axis from the lower end side of the operation shaft, and each end is axially connected to the upper end side of the second base frame and the axial lower end of the operation shaft. Link to be installed in between And a spring member for elastically urging the second base frame and the link arm, which are interposed between the second base frame and the link arm and pivoted in the axial direction, to elastically bias the link arm in the extension direction. The stopper plate is provided on the upper end side, and the lower end side is provided with a grounding plate on the lower end side, which is provided with a space on the plate surface through which the tip side of the holding claw can pass downward, and which projects laterally from the base frame. And a locking piece that is mounted above the operating plate within the interval of the base frame and that engages and supports the latching piece. Has been done.

In the weeding instrument according to the second aspect of the present invention, the guide edge which is slantingly upward and slidably contactable with the upper end side of the actuating plate is provided below the pivotal position between the second base frame and the link arm. It is configured by being provided on the base frame.

In the weeding tool according to the third aspect of the present invention, the first base frame is provided with a spring member that displaces the latching piece in the mounting direction of the locking piece.

In the weeding tool according to the fourth aspect of the present invention, the grounding plate is projected laterally from the first base frame, and the latching piece is provided as an acting portion of external force for releasing from the locking hook. It is configured.

In the weeding tool according to a fifth aspect of the present invention, a leaf spring member projecting obliquely downward from the actuating plate toward the tip side of the holding claw provided on the second base frame is also used for removing grass. It is configured by being provided as a biasing member of the stopper piece.

[0010]

In the weeding tool according to the first aspect of the present invention, the grounding plate is placed on the ground so that the space of the grounding plate matches the grass line and the operating shaft is pushed down by the user. Keep it and move it by plunging into the ground. Along with this, the actuating plate moves relatively upward along the first base frame, and when it reaches the top dead center, the second base frame and the link arm bend and move due to the pressing force applied to the ground plate. . Along with this bending movement, the holding claws of the second base frame move closer to the holding claws of the first base frame, and pinch the grass roots in the ground.

At the time when the holding claw holds the grass root, the latching piece engages with the locking piece, and the operating plate is locked with the holding claw holding the grass root. When the user pulls up the operation shaft while the operating plate is locked, the grass including the root remains sandwiched by the gripping claws, so that the grass including the root can be pulled out from the ground. After the removal, the latching piece is disengaged from the locking piece, and the second base frame and the link arm are extended by the spring member, and the holding claw is moved away from the tip of the holding claw. Can be released.

Therefore, in this weeding tool, the user only has to hold the grip portion on the upper end side of the shaft in a standing posture and push down and pull up the operation shaft to reduce the burden on the waist of the user. , Even if it is a strong grass, it can be reliably extracted. In addition, since only one side of the second base frame and the link arm can be operated by a pushing-down force that bends, it does not require a large force, and it is mechanically simple and lightweight and easy to use. can do.

In the weeding implement according to claim 2 of the present invention,
By providing the second base frame with a guide edge that is slanted upward and slidably contactable with the upper end side of the work plate below the pivotal position of the second base frame and the link arm, the operation plate moves upward. As a result, the pivotal portions of the second base frame and the link arm can be gradually pushed in the bending direction, so that they can be smoothly bent.

In the weeding implement according to claim 3 of the present invention,
The first spring member that displaces the latching piece in the mounting direction of the locking piece
The locking piece can be securely engaged with the locking piece at the top dead center of the actuating plate, because the locking piece is attached to the base frame.

In the weeding implement according to claim 4 of the present invention,
By providing the ground plate laterally beyond the first base frame and providing the hooking piece as an external force acting portion for releasing the hooking piece from the locking hook, the hooking piece can be easily operated by kicking the grounding plate with a foot or the like. Can be removed from the locking piece.

In the weeding implement according to claim 5 of the present invention,
Since a leaf spring member that projects obliquely downward from the operating plate toward the tip side of the holding claw provided on the second base frame is provided,
As the second base frame and the link arm extend and move, the grass can be reliably wiped off between the claws of the holding claw by the leaf spring member. Further, since the leaf spring member is also used as a means for displacing the latching piece in the mounting direction of the locking piece, the simplicity can be improved with a small number of parts.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As described above with reference to the accompanying drawings, the weeding tool shown in the drawing has an operating shaft S and a grass picking mechanism C mounted on the lower end side of the operating shaft S as shown in FIG. It consists of and. The operation shaft S is formed of a cylindrical pipe member, and has a length that allows a user to operate by gripping the grip portion G on the upper end side of the shaft.

As shown in FIG. 2, the grass plucking mechanism portion C is composed of a first base frame 1 and a second base frame 2 as bases. Each of the base frames 1 and 2 has rising flange portions 1a and 2a on both sides, and the bearing flange portions 1b and 2 are continuously formed from the rising flange portions 1a and 2a.
By providing b, it is formed in a substantially U-shaped cross section. The base frames 1 and 2 are opposed to each other by fitting the bearing flange portion 1b on the first side into the space between the bearing flange portions 2b on the second side to face each other, and the support shaft 3a is inserted into the bearing holes of the flange portions 1b and 2b. By means of this, they are bearing-coupled to each other.

Of these, when the first base frame 1 is expanded and illustrated, as shown in FIG. 3, a flat sheet metal material including the rising flange portions 1a on both sides and the bearing flange portions 1b on both sides is cut and cut. Has been done. Each bearing flange portion 1b is provided with a bearing hole 1c for inserting a support shaft,
Further, a cut / bend piece 1d for fixing a slide shaft, a screw insertion hole 1e, and a screw insertion hole 1f for fixing a holding claw are provided on the substrate surface, which will be described later. The base frame 1 has a rising flange portion 1a so that the bearing flange portion 1b fits within the space between the bearing flange portions 2b of the second base frame 2.
Is formed by bending.

Each of the base frames 1 and 2 has a holding claw 4,5.
Is attached so as to project downward from the lower end side. Of the holding claws 4, 5, the first holding claw 4
As shown in FIG. 4, the central claw portion 4a is replaced by the claw portions 4b on both sides,
The tip shape is formed so as to project longer than 4c at an acute angle so that it can be easily projected below the ground. The holding claw 4 is attached to the first base frame 1 by tightening and fixing it with a bolt 6a and a nut 6b which are inserted into the screw hole 4d. Further, the tip side of the holding claw 5 on the second side is the first side.
A strip-shaped spring plate material that is slightly curved is provided near the holding claws 4 on the side. The holding claws 5 are attached to the second base frame 2 by fastening and fixing them with bolts 7a and nuts 7b like the first holding claws 4.

The first base frame 1 is provided with a slide support shaft 8 of the operation shaft S which is erected vertically upward from the upper end side. As the slide support shaft 8, as shown in FIG. 5, a flat plate material bent in a U-shaped cross section is attached. The slide support shaft 8 is shown in FIG.
The L-shaped lower end piece 8a as shown in FIG.
Of the above-mentioned base frame 1 and the cut and bent piece 1d of the base frame 1 is slid by the rivet 9b.
Therefore, it is firmly attached and fixed to the first base frame 1. This slide support shaft 8 has a shaft upper end side 8b.
Is inserted into the cylinder from the lower end side of the operation shaft S, and the operation shaft S is supported so that the operation shaft S can be linearly slid down as the operation shaft S is pushed down.

In the second base frame 2, the link arms 1 are connected by bearing each end to the upper end of the base frame 2 and the lower end of the operating shaft 1 by means of supporting shafts 3b and 3c.
0 is mounted so that it can be hung over the operation shaft S. In the illustrated embodiment, the shaft-side pivotal portion of the link arm 10 is rotatably connected to the locking piece mounted and fixed to the lower end side of the operation shaft S by the support shaft 3c, as will be described later. The second base frame 2 and the link arm 10 are provided with a torsion coil spring 11 as a spring member on the axis of the support shaft 3b, and the spring ends 11a and 11b are pressed against the base frame side and the link arm side. It is constantly biased in the extension direction.

Below the pivot portion between the base frame 2 and the link arm 10, the second base frame 2 is provided with a guide edge 2c which extends obliquely upward from the rising flange portion 2a. The guide edge 2c is slidably brought into contact with the upper end side of an actuating plate, which will be described later, to cause the second base frame 2 to move.
And the link arm 10 are provided to assist the bending movement.

As shown in FIG. 2, an operating plate 12 is mounted on the first base frame 1 so as to be vertically movable within the space between the first base frame 2 and the second base frame 2. The operating plate 12 has a latching piece 13 bent in an inverted L shape on the upper end side, and a grounding plate 14 formed by bending upward and obliquely to the lateral side is provided on the lower end side. It is formed from a single flat plate material. Among them, the operating plate 12 is provided with a cutout space 12a on the plate surface as shown in FIG. This cutout space 12a is formed in the first base frame 1 as shown in FIG.
The bearing flange portion 1b provided in the upper part is received in the space, and the upper and lower cutout edges 12 are moved as the operating plate 12 moves up and down.
b and 12c are provided so as to regulate the top dead center and the bottom dead center of the operating plate 12 by contacting the upper and lower rising edges of the bearing flange portion 1b.

Further, the bridging plate 13a of the latching piece 13 is provided with a notch 13b for receiving the slide support shaft 8 of the operation shaft S as shown in FIG. In addition to this, as shown in FIGS. 6 and 7, the ground plate 14 has a cutout space 14a continuous from the lower end side of the actuating plate 12 that can pass downward through the tip side of the holding claw 4 provided in the first base frame 1. Is provided on the plate surface. The cutout space 14a is cut out so that a flat plate portion is partially left on the lower end side of the operating plate 12 in order to provide a protrusion 14b for receiving and supporting a spring member described later.

Corresponding to the hooking piece 13, a locking piece 15 for engaging and supporting the hooking piece 13 is provided so as to be located above the base frames 1, 2 as shown in FIG. As shown in FIG. 8, the locking piece 15 is mainly composed of a hook-shaped hook portion 15a, and the locking plate 15b and a fixing plate portion 15b are attached so that the hook portion 15a is opposed to both sides via the axis of the operation shaft S. The whole is cut and formed from a flat plate material including the hole 15c and the insertion hole 15d of the support shaft 3c. The locking piece 15 is curved in a U shape as shown in FIG. 5, and as shown in FIG. 2, the application fixing plate portion 15b is fixed on the axis of the operation shaft S with rivets 9c and 9d. Equipped to project into the space.

As shown in FIG. 2, the operating plate 12 is provided with a plate spring member 16 which projects obliquely downward toward the tip side of the holding claw 5 mounted on the second base frame 2. The leaf spring member 16 is formed by bending a strip-shaped leaf spring material, and is attached and fixed to the actuating plate 12 by the rivet 9e by bringing the tip end side into contact with the holding claw 5. The leaf spring member 16 presses the lower end side of the operating plate 12 so that the latching piece 13 is displaced in the mounting direction of the locking piece 15, and
It is provided as a means for brushing off the grass that is picked up between the tips of the gripping claws 4, 5. Further, the grounding plate 14 projects outward from the first base frame 1 so as to remove the latching piece 13 from the locking piece 15 against the leaf spring member 16 by applying an external force such as the user kicking with the foot. Is arranged.

As the above-mentioned support shafts 3a to 3c, a split pin in which a split line is formed in a sawtooth shape as shown in FIG. 5 can be used. In addition to the bolts 6a and 7a, the nuts 6b and 7b, or the rivets 9a to 9e, an appropriate shaft stopping means can be applied to the means for fixing the holding claws 4, 5, the slide support shaft 8 and the locking piece 15. Although welding fixing may be applied instead of the shaft stopping means, the shaft stopping means is preferable in order to cope with the loss and replacement of parts during use.

In the weeding tool having such a structure, as shown in FIG.
The ground plate 14 integrated with the operating plate 12 is placed on the ground in accordance with the grass to be picked as shown in FIG. When the operation shaft S is pushed down in the aligned state, the operating plate 12 moves upward as shown in FIG. 10, and the holding claws 4 and 5 relatively move below the ground while maintaining the relative state. Also, the operating plate 1
With the upward movement of 2, the upper end side of the operating plate 12, that is, the latch claw 13 is brought into sliding contact with the guide edge 3c protruding obliquely upward of the second base frame 2, and the second base frame 2 and the link arm. It assists the pressing so that the pivot portion with 10 is bent.

When the operating plate 12 reaches the top dead center, the second base frame 2 and the link arm 10 are bent as shown in FIG. 11, and the second-side holding claw 5 is moved to the first-side holding claw. By moving close to 4, the roots are pinched. Along with this operation, the leaf spring member 16 is pressed by the holding claws 5 that move close to each other, and the operating plate 12 is tilted from the lower end side so that the latching piece 13 on the upper end side is displaced in the mounting direction of the locking piece 15. This operating plate 12
The latching piece 13 engages with the locking piece 15 due to the tilt movement of, and the holding claws 4 and 5 are locked while holding the grass with the root.

When the user pulls up the operating shaft S while the holding claws 4 and 5 are in the locked state, the tip ends of the holding claws 4 and 5 thrust below the ground can be pulled out and the grass can be pulled out together with the roots. . After the grass is removed, when an external force such as kicking the grounding plate 14 protruding laterally from the first base frame 1 is applied, the operating plate 12 is tilted in the opposite direction against the plate spring member 16. The stopper piece 13 is disengaged from the locking piece 15. As the latching piece 13 is released, the second base frame 1 and the link arm 10 are twisted by the coil spring 11.
The grass can be discharged from between the tips of the holding claws 4 and 5 because the grass extends. In addition, the actuating plate 12 descends with the force of the extension movement of the second base frame 1 and the link arm 10, and the leaf spring member 16 slides along the holding claws 5 on the second side, so that the grass roots. Even if the soil is sandwiched by the claws 4 and 5, it can be reliably wiped off.

[0032]

As described above, according to the weeding tool of the present invention, the user can pick grass while standing and the link mechanism operates only one side of the holding claw. Therefore, it can be operated with a small force, and can be configured to be lightweight and easy to use.

[Brief description of drawings]

FIG. 1 is a side view generally showing a weeding implement according to the present invention.

FIG. 2 is a side sectional view mainly showing a weeding mechanism part of the weeding tool.

FIG. 3 is a developed plan view showing a first base frame provided in the grass plucking mechanism section.

FIG. 4 is a front view showing a holding claw on one side provided in the grass removing mechanism.

FIG. 5 is a plan view mainly showing the grass picking mechanism portion from the upper side.

FIG. 6 is a rear view showing an operating plate including a hooking piece and a ground plate provided in the grass plucking mechanism section.

FIG. 7 is a plan view of an operating plate including the hooking piece and the ground plate shown in FIG.

FIG. 8 is a developed plan view showing a locking piece provided in the grass plucking mechanism section.

FIG. 9 is an explanatory view showing an initial state of operation of the grass plucking mechanism section.

FIG. 10 is an explanatory view showing a state in which the grass removing mechanism portion is in the process of being operated.

FIG. 11 is an explanatory view showing an end-of-operation state of the grass removing mechanism section.

[Explanation of symbols]

 S Operation shaft G Grip of operation shaft C Grass picking mechanism 1 First base frame 2 Second base frame 3 Support shaft of base frame 4,5 Holding claw 8 Slide support shaft of operation shaft 10 Link arm 11 Spring member 12 Actuation plate 13 Hooking piece 14 Ground plate 15 Locking piece 16 Spring member

Claims (5)

[Claims] 1. An operating shaft having a length that allows a user to operate by gripping a grip portion on the upper end side of the shaft while standing upright, and a grass that operates so as to hold the grass together with the grass when the operating shaft is pushed down. The grass picking mechanism is composed of first and second base frames that are axially connected to each other by longitudinally opposed flanges, and the lower and lower ends of the base frames face each other. And the grass-holding claw that is protrudingly mounted, and an operating shaft that is erected vertically upward from the upper end side of the first base frame so that the upper end side of the shaft is assembled and inserted into the axial line from the lower end side of the operating shaft. Slide support shafts, link arms each end of which is rotatably coupled to the upper end side of the second base frame and near the lower end of the shaft of the operation shaft so as to carry over between them, and the second base frame and the link arm. Through the pivot with And a spring member that elastically biases the link arm and the flexible second base frame in the extension direction, further has a latching piece on the upper end side, and the tip end side of the holding claw is downward. An operating plate which has a groundable plate on the lower end side, which has a space through which it can pass and which projects laterally from the base frame, and is supported by the first base frame so as to be vertically movable within the space between the base frames. And a locking piece that is mounted above the actuating plate within the space of the base frame and that engages and supports the latching piece. 2. A guide edge, which is slantingly inclined upward and is slidably in contact with the upper end side of the operating plate, is provided on the second base frame below the pivotal position between the second base frame and the link arm. The weeding implement according to claim 1. 3. The weeding tool according to claim 1, wherein the first base frame is provided with a spring member that displaces the latching piece in the mounting direction of the locking piece. 4. The weeding tool according to claim 3, wherein the grounding plate is provided laterally beyond the first base frame to provide an external force acting portion for releasing the latching piece from the locking hook. Equipment. 5. A leaf spring member projecting obliquely downward from the operating plate toward the tip side of the holding claw provided on the second base frame is provided as a biasing member for the grass stripping / holding piece. The weeding implement according to claim 3 or 4, characterized in that.