JPH0646604A - Grass pulling out device - Google Patents

Abstract

PURPOSE:To prolong the life of claw by efficiently pulling out grass together with root. CONSTITUTION:Plural claws 31 and 32 are put on a driving shaft 23 side by side at intervals. Adjacent claws 31 and 32 are periodically opened and closed by a slide key 26. Grasses can efficiently be pulled out even if the grass is a weed having small tall by interposing the grass between the claw 31 and 32 periodically opened and closed and for a while rotating claws 31 and 32 kept in closed state. Since crawls 31 and 32 are only opened and closed, claws are hardly abraded and the life of claws can be prolonged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weeding machine for removing weeds in a garden or the like.

[0002]

2. Description of the Related Art Conventionally, as a tool for removing weeds, there has been known a device for cutting grass and stems from the lateral direction by using a single rotary blade like a brush cutter.

[0003]

However, in the conventional devices such as the brush cutter, since the leaves and the stems are cut off from the middle of the leaves, new shoots may grow immediately after the brushing process, or small buds may appear. Weeds that are too short may not be treated. Moreover, since the cutting is carried out by using the rotary blade, there is a drawback that the cutting edge is worn, resulting in poor sharpness and shortened life.

The present invention has been made in view of the above conventional problems, and an object thereof is to enable a large number of weeds to be efficiently extracted together with roots and to have a long life. To provide a weeding machine.

[0005]

In order to solve the above problems, the present invention is directed to a weeder main body 1 having a motor 11 built therein,
And a weeding block 2, the weeding block 2 is
A plurality of claws 31, 32 arranged side by side at intervals and an opening / closing means 26 for periodically opening and closing the adjacent claws 31, 32, respectively.
And the claw 3 which is closed by the opening / closing means 26.
It is provided with a drive means for driving 1, 32 in the direction of pulling out the grass 9.

Further, among the plurality of claws 31 and 32, the adjacent claws 31 and 32 located at the outermost position are the weeding block 2
It may be arranged on the outer side of. Further, the handle 50 may be attached to the weeder main body 1, and the rotation direction of the claws 31 and 32 by the drive means may be set to a direction away from the handle 50.

[0007]

According to the present invention, a plurality of claws 31 and 32 are arranged side by side with a space therebetween, and the opening and closing means 26 adjoins each other.
The pawls 31 and 32, which are closed by the opening / closing means 26, are opened / closed by the driving means 23, while the opening / closing means 26 are opened / closed.
Since the grass 9 is driven in the direction to pull out the grass 9, the grass 9 is sandwiched between the claws 31 and 32 that are cyclically opened and closed, and both claws 31 and 32 in the closed state are rotated for a short time so that the grass 9 Is pulled out. Grass like this 9
By repeating the operation of sandwiching and pulling out, it becomes possible to pull out the leaves and stems from the roots. Therefore, new shoots do not grow immediately and even small short weeds can be efficiently extracted. Moreover, because of the structure for opening and closing the plurality of claws 31, 32,
Unlike the conventional case where the grass 9 is cut from the lateral direction by using the rotary blade, wear of the claws 31 and 32 is small and the life can be extended.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the accompanying drawings. The weeding device used in this embodiment is shown in FIG.
As shown in FIG. 5, a weeder main body 1 having a motor 11 built therein, a weeding block 2, and a comb 4 for removing foreign matter are provided. In the weeder main body 1, the motor 11, the battery case 14 for the power source of the motor 11, the switch section 15 for controlling the motor 11, and the handle 50 are arranged in the housing 10 divided into two. A pinion 12 and an intermediate gear 13 meshing with the pinion 12 are attached to the output shaft of the motor 11.
The comb 4 is formed in a comb shape and is arranged in front of the weeding block 2 to remove foreign matters such as stones. The comb 4 has elasticity in the traveling direction F so as to be easily operated. .

As shown in FIG. 1, the weeding block 2 is provided with a frame 20 coupled to hooks 16 and 16 projecting from the weeder main body 1, and a cap 21 attached to the frame 20. Both ends of a drive shaft 23, which is drive means, are rotatably supported by the bearings of the frame 20 and the cap 21. A reduction gear 24 meshing with the intermediate gear 13 is press-fitted and fixed to one end of the drive shaft 23, and the support plate 2 is attached to the other end of the drive shaft 23.
5 are press-fitted and fixed, and a plurality of disk-shaped claws 3 are provided between the reduction gear 24 and the support plate 25 on the drive shaft 23.
1, 32 are press-fitted and fixed at intervals. As a result, the rotational driving force from the motor 11 is applied to the pinion 1
2, the intermediate gear 13, and the reduction gear 24 are transmitted to the drive shaft 23 so that the plurality of disk-shaped claws 31 and 32 are rotationally driven. In the present embodiment, these claws 31, 32 are composed of five sets of adjacent claws 31, 32, and elastic bodies 29 are interposed between the claws 31, 32, respectively.
Due to the biasing force of the elastic body 29, the claws 31 and 32 are normally kept at a constant interval. In addition, the claws 31, 32
Is rotated in the direction of pulling out the grass 9, and the shapes of the claws 31 and 32 are not limited to the disk shape described above. For example, as shown in FIG. The grass 9 may be formed in a cut shape, and in this case, the grass 9 can be easily grasped in the gap between the claws 31 and 32. Further, the material of the claws 31 and 32 may be a thin plate having elasticity, for example, a plastic material, and in this case, the grass 9 can be grasped without cutting as much as possible.

A slide key 26, which is an opening / closing means, is attached to the drive shaft 23 so as to be movable in the axial direction and rotatable integrally with the drive shaft 23. A plurality of projections are provided on the slide key 26. The projection 28 has the adjacent claw 31,
32 are individually interposed between each other. One end of the slide key 26 is in contact with the cam plate 27 fixed near the bearing portion of the frame 20, and when the slide key 26 is rotated by the drive shaft 23, a pressing force from the cam plate 27 is generated. The restoring force of the elastic body 29 is applied to the slide key 26, and the slide key 26 reciprocates in the axial direction with respect to the drive shaft 23. Here, as shown in FIG. 2, when the slide key 26 is located on the opposite side of the opening of the frame 20 in the weeding block 2, the slide key 26 is not pressed by the cam plate 27,
The elastic body 29 interposed between the claws 31 and 32 keeps the claws 31 and 32 at a constant interval, respectively.
The grass 9 can be introduced between 1 and 32. Further, as shown in FIG. 1, when the slide key 26 is located at the opening of the frame 20 in the weeding block 2, the slide key 26 is moved to the left side by being pressed by the cam plate 27 and is projected to the slide key 26. Each protrusion 2 provided
By pushing and inclining the one claw 32 to the left side, a part of the one claw 32 can be displaced to a part of the other claw 31 so that the grass 9 can be sandwiched. The grass 9 is pulled out by rotating the and 32 for a short time. Then, when the claws 31 and 32 are opened, the grass 9 pulled out
Is to be thrown out by the centrifugal force accompanying the rotation. By the slide key 26, one claw 3
Although 2 is pressed, for example, two slide keys may be used to close both claws 31 and 32 to grasp the grass 9.

In the above structure, the leaves and the stem can be pulled out from the root without cutting as much as possible by rotating the plurality of claws 31 and 32 and periodically opening and closing them. Especially, the nails 31, 32
When is made of a plastic thin plate, it is possible to reliably prevent the cutting of leaves and the like and pull it out from the root. Therefore, new shoots do not grow immediately and even small short weeds can be efficiently extracted. Moreover, since the plurality of claws 31 and 32 are periodically opened and closed, the grass 9 is laterally cut using a rotary blade as in the prior art, and the claws 31 and 32 are less worn, The life can be extended.

Further, as shown in FIG. 7, when the weeding block 2 is arranged on the tip side of the handle 50, the rotation direction of the claws 31, 32 by the motor 11 is attached to the weeding machine main body 1. Alternatively, it may be set in a direction away from the handle 50 (counterclockwise direction). In this case, since the grass 9 pulled out by the claws 31 and 32 can be scattered in the direction away from the handle 50, it is possible to prevent grass or the like from scattering on the hand holding the handle 50, and the safety is enhanced.

As another embodiment of the present invention, as shown in FIG. 8, only the pair of outermost claws 31 and 32 may be arranged outside the weeding block 2. In this case, since the claws 31 and 32 are exposed to the outside of the weeding block 2, the grass 9 growing near the obstacle can be pulled out by the claws 31 and 32, further improving the weeding efficiency. Can be improved.

As another embodiment, as shown in FIG. 9, the trimmer block 100 may be arranged in front of the weeding block 2. In this trimmer block 100, a comb-shaped fixed blade 41 and a comb-shaped movable blade 42 are arranged so as to overlap with each other. On the movable blade 42, a joint 43 for reciprocating the movable blade 42, and the movable blade 42 are fixed blades 41. A pressing spring 44 that biases the spring is attached to the side, and the blades 41 and 42 have a variable structure in which the weeding height can be changed by, for example, the handle 50, making it easy to grasp the root of the grass 9 and cutting the leaves. Is hard to happen.

As yet another embodiment, as shown in FIG. 10, wheels 6 for improving the progress of the weeder main body 1.
0 and 60 may be provided on both sides of the weeding block 2.

[0016]

As described above, according to the present invention, a plurality of pawls arranged side by side at intervals, an opening / closing means for periodically opening and closing adjacent pawls, and a state closed by the opening / closing means. Since it has a drive means for driving a certain nail in the direction of pulling out the grass, by repeating the opening and closing operation of the nail and the pulling-out operation, even a short weed can be efficiently extracted from the root, and a beautiful garden can be created. You will be able to keep. Moreover, since the plurality of claws are opened and closed to be pulled out, wear of the claws is reduced, and a weeding device having a long life can be obtained.

Further, among the plurality of claws, if the adjacent outermost claws are arranged outside the weeding block, the adjacent claws are exposed to the outside of the weeding block. The grass growing near the obstacle can be pulled out by the exposed claw, and the weeding efficiency is further improved. Further, when a handle is attached to the weeder main body and the rotation direction of the pawl by the driving means is set to the direction away from the handle, the grass pulled out by the pawl can be scattered in the direction away from the handle. Therefore, it is possible to prevent grass and the like from scattering on the hand holding the handle, which enhances safety.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a weeding machine used in an embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state in which a claw of the weeding tool of the same is opened.

FIG. 3 is a partially cutaway side view of the above weeding machine.

FIG. 4 is a perspective view of the above weeding machine.

FIG. 5 is an exploded perspective view of the above weeding machine block.

FIG. 6 is a side view showing a modified example of the same nail.

FIG. 7 is a partially cutaway side view showing the advanced state of the above weeding machine.

FIG. 8 is a cross-sectional view of a weeding block used in another embodiment of the present invention.

FIG. 9 is a cross-sectional view of a weeding machine used in still another embodiment of the present invention.

FIG. 10 is a perspective view showing still another embodiment of the present invention.

[Explanation of symbols]

 1 Weeder main body 2 Weeding block 11 Motor 31,32 Claw 23 Drive means 26 Opening / closing means 50 Handle

Claims (3)

[Claims] 1. A weeding machine main body having a built-in motor and a weeding block, wherein the weeding block periodically opens and closes a plurality of claws arranged in parallel with each other and adjacent claws. A weeding machine comprising: an opening / closing means for opening and a driving means for driving the claws closed by the opening / closing means in a direction of pulling out grass. 2. The weeding machine according to claim 1, wherein among the plurality of nails, adjacent outermost nails are arranged outside the weeding block. 3. A weeding machine, wherein a handle is attached to the weeding machine main body, and a rotation direction of the pawl by the driving means is set to a direction away from the handle.