JPS6134979Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a multi-cutting blade accommodating body for a brush cutter, and more particularly to a multi-cutting blade accommodating body for a brush cutter that accommodates and rotates a cord functioning as a cutting blade of the brush cutter.

Conventionally, in brush cutters, the height of the hole through which the flexible cord is fed out as the cutting blade is constant, and the number of holes, that is, the number of cords, is also constant. However, the user could not change the brush cutter to a corresponding one, and the scope of application was extremely limited, and the brush cutter only functioned as a single function. Further, there is a risk that the cord may unexpectedly protrude during the work, and the protruding cord may wrap around the material to be cut, resulting in a reduction in work efficiency.

Therefore, the purpose of the present invention is to eliminate the above-mentioned inconveniences, make it possible to select and change the cord payout height position, concentrate the cords on one plane, and pay out the cords, and also change the number of cords as desired. To provide a multi-cutting blade accommodating body for a brush cutter, which can effectively prevent cords from being tampered with, improve workability, and have versatile functions.

Embodiments of the present invention will be described in detail and specifically below based on the drawings.

1 to 8 show embodiments of the present invention. In the figure, 2 is a container, 4 is a drive shaft, 6 is a reel, and 8 is a cord serving as a cutting blade. A plurality of holes 10 are bored in the circumferential surface 2p of the container 2 at equal intervals and in one plane, and these holes 10 are used as holes for feeding out the cord 8. In addition, a plurality of holes 12 are bored at predetermined intervals on the bottom surface 2s of the container 2, and the holes 1
2 is a communication hole for the cord 8, and as shown in FIG. The cord 8 housed in the cord 8 is concentrated on one desired plane and fed out.

In addition, to prevent the cord 8 from unexpectedly protruding due to centrifugal force or shock due to collision with an obstacle, that is, to prevent the cord 8 from protruding too much, the container 2 is provided with an over-extrusion prevention means.

That is, as shown in FIG. 2, the bottom surface 2s of the container 2
In addition to the communication hole 12, there is an overflow prevention hole 14.
The cord 8 is sewn through the over-extrusion prevention hole 14 as shown in the figure, and finally the cord 8 is threaded through the feed-out hole 10.
It is configured so that the cord 8 can be fed out through the cord.

Alternatively, as shown in FIG. 3, a plurality of over-extrusion prevention rods 15 may be erected on the bottom surface 2s and the cord 8 may be passed through in a zigzag manner.

Furthermore, as shown in FIG. 4, an over-extrusion prevention body 17 having a pointed tip and a plurality of cuts 16 extending backward from the tip, that is, in the feeding direction, is attached to the cord 8 to prevent centrifugal force. The overflow prevention body 17
It may be configured such that the cord advances and enters the feeding hole 10, and as a result, the cord 8 is tightened to prevent the cord 8 from coming out excessively. That is, when the rotation of the container 2 is stopped, the overextrusion prevention member 17 is automatically reversely moved and positioned toward the slightly central portion, so that the cut 16 of the overextrusion prevention member 17 is positioned on the outside of the container 2. The cord 8 can be fed out because it is not located within the feeding hole 10 in the direction and therefore the expanding/contracting portion where the cut 16 is formed does not tighten the cord 8. On the other hand, when the container 2 rotates, the overflow prevention body 17 is rotated by the centrifugal force.
1 of the overflow prevention body 17.
The expanded/contracted portion 6 is inserted into the feeding hole 10 and is narrowed by the feeding hole 10, thereby tightening and restraining the entire outer periphery of the cord 8 at any position on the cord 8. That is, as is clear from the above explanation, the overextrusion prevention body 17 is made of an elastic member such as spring steel or plastic, and has a configuration in which the gripping force of the cord 8 is automatically changed depending on the presence or absence of centrifugal force. It is said that

Next, the operation of this embodiment will be explained.

When using the multiple containers (for example, double) according to this embodiment, the cords 8 are fed out two by two from each container 2 as shown in FIG. In this case, the cord is double-wound as shown in FIG. 4, and there are two terminals, 8 and 8'. Also, as shown in Figure 6, one each on the top and bottom, and as shown in Figure 7, two only on the top.
As shown in FIG. 8, the cords 8 can be fed out in various states, such as two cords only at the bottom.

Therefore, as described above, by making the containers 2 multiple, the number of cords 8 can be increased, that is, the number of cutting edges can be increased. Furthermore, the height of the mowing can be adjusted by adjusting the brush cutter, depending on the plants to be mowed, rather than depending on the operator's control, thereby improving usability.

In addition, when the rotation of the container 2 is stopped, the overextrusion prevention body 17 is automatically moved backwards and positioned toward the slightly central portion, and the cut 6 of the overextrusion prevention body 17 is It is not located within the outward feeding hole 10,
Therefore, the expansion/contraction part that formed the cut 16 is the code 8.
Since it is not tightened, cord 8 can be fed out. On the other hand, when the storage body 2 rotates, the overflow prevention body 17 moves toward the outside of the storage body 2, that is, radially outward, due to centrifugal force, and the overflow prevention body 17
The expansion/contraction part where the cut 16 is formed is the feeding hole 10.
It enters the inside and is narrowed by this feeding hole 10, and the entire outer periphery of the cord 8 is tightened and restrained at any position of the cord 8. Thereby, as the container 2 rotates, the overextrusion prevention body 17 automatically prevents the cord 8 from overextruding easily. In addition, since the entire outer periphery of the cord 8 at any arbitrary position is clamped, and the gripping force of the cord 8 is automatically changed depending on the presence or absence of centrifugal force, excessive protrusion of the cord 8 can be effectively and reliably prevented. Further, excessive tightening force is not required, deformation of the cord 8 is avoided, damage is prevented, and the service life can be extended.

9 and 10 show other embodiments of the present invention.

A feature of this other embodiment is that the container is constructed without being clearly divided. That is, the upper case 21, the middle case 22, and the lower case 23.
This constitutes a rotating body, with an upper feeding hole 24 provided in the middle case 22 and a lower feeding hole 25 between the middle case 22 and the lower case 23. In addition,
27 is a gear case.

In the above embodiment, it can be considered that there is a container 2 for each reel 6, and it can be said that there is a double container.

In the above-mentioned two embodiments, the container is constructed in two layers, but it is of course possible to construct it in three or more layers.

As is clear from the above detailed description, the present invention can produce the following effects.

(1) Since it is configured as described above, it is possible to select and change the cord payout height position, and the number of cords can also be changed as desired, so various modifications and uses are possible depending on the mode of mowing and changes in the object to be mown. This makes it possible to realize an extremely versatile brush cutter. Further, since a communication hole is provided in the bottom surface of the container, a large number of cords in the stacked upper and lower containers can be concentrated on one desired plane and fed out. Thereby, objects to be cut, such as stem culms, can be cut quickly and at the same height, and the efficiency of cutting work can be improved. Furthermore, by winding a large number of cords on the reel, if the cord becomes worn out, the cord can be used for a long time by simply feeding out the cord one after another, and the number of cord replacement operations can be reduced.

(2) Since a large number of containers for storing cords are stacked one on top of the other, the number of cord ends that act as cutting blades can be easily increased, and the efficiency of mowing work can be improved.

(3) If configured as shown in Figures 6, 7, and 8, in which one cord is fed out from one container, all of the inertia of the container will be transmitted to one cord, resulting in improved mowing capacity. This improves the engine performance and reduces the load on the engine.

(4) Since each container is equipped with a means to prevent the cord from overhanging, it is possible to effectively prevent the cord from unexpectedly overhanging during the mowing operation. Prevents inconveniences such as wrapping,
Work efficiency can be improved. As an overflow prevention means, when the rotation of the container stops, it automatically moves backwards to the center of the container and is positioned, and when the container rotates, it plunges into the feeding hole in the outer direction of the container and is fed out due to centrifugal force. An over-extrusion prevention body with multiple cuts extending in the feeding direction is provided at the tip of an elastic member that is narrowed by a hole and restrains the cord at any position of the cord to prevent the cord from over-extruding. , the cord can be easily fed out when the rotation of the storage body is stopped, the cord can be effectively and reliably prevented from extending out when the storage body is rotated, and excessive tightening force is not required, and the cord can be easily fed out. Deformation can be avoided to prevent damage and extend the service life.

[Brief explanation of the drawing]

1 to 8 show an embodiment of the present invention, in which FIG. 1 is a perspective view of a double cutting blade accommodating body, and FIGS. 2 and 3 are perspective views showing an embodiment of the overextrusion prevention means, Figure 4 is an enlarged view of the main parts showing other overflow prevention means, numbers 5 to 8.
The figures are side views showing various cord feeding methods. 9 and 10 show other embodiments of the present invention, in which FIG. 9 is a partially sectional side view of the rotating body, and FIG.
The figure is an exploded view of the rotating body. In the figure, 2 is a storage body, 2p is a circumferential surface, 6 is a reel, 8 is a cord, 10 is a feeding hole, 12 is a communication hole, 16 is a cut, and 17 is an overflow prevention body.

Claims (1)

[Scope of utility model registration request] A reel wound with a cord that functions as a cutting blade is provided in the center, and a plurality of containers each having a plurality of holes for feeding the cord at equal intervals on the circumferential surface and in one plane are stacked. A plurality of communication holes are provided in the bottom surface of the container so that the cords housed in the container are concentrated on a desired plane and fed out, and the cords can be fed out when the rotation of the container stops. When the container is rotated, the container is automatically moved backwards and positioned toward the center of the container, and when the container rotates, it automatically enters the feeding hole in the outer direction of the container due to centrifugal force and is clamped by the feeding hole. An over-extrusion prevention body having a plurality of cuts extending in the feeding direction is provided at the tip of an elastic member that is tightened and restrains the cord at any position of the cord to prevent the cord from over-extruding. A multi-cutting blade housing for a brush cutter, characterized by: