JPH0458932B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a pruning tool used mainly for pruning various orchards, such as apples, peaches, tangerines, pears, etc.

(b) Conventional technology In recent years, fruit tree cultivation methods have undergone a major change in direction, in conjunction with demands for liberalization of agricultural products from overseas.

The general trend is to make trees smaller to enable dense planting, to have more branches to expose them to more sunlight, and to work in high places that are out of reach, which is dangerous and inefficient. In addition to improving this as much as possible,
This is a cultivation method that allows machines such as pest control machines, pruning machines, transport vehicles, and tractors to easily enter the garden, and that cultivates trees in a shape that facilitates these mechanized operations (see Figure 8). .

For this purpose, pruning work at the right time and in the right place, including when the trees are young, is essential and is one of the important management tasks.

In conventional pruning work, as shown in FIG. At present, it is secured to a stake (t) or a stake (p).

In addition, as a trimming tool for bonsai, a main rod is formed by bending a wire rod of an appropriate thickness into a substantially U-shaped plane. The straightening rod and the main body rod are bent into a planar groove shape so as to substantially coincide with the coupling direction of There are things that the main body is equipped with (for example,
101752).

(c) Problems to be solved by the invention In the case of the conventional tree trimming tool, in the case of the above-mentioned string,
Although the degree of bending of the branches can be adjusted as appropriate, there are problems such as poor work efficiency and the fact that the strings are located at the feet of the workers, such as getting in the way of workers and making it impossible to carry out mechanical work.

Furthermore, when the branch straightening tool described later is used on fruit trees, the problem with the string mentioned above is solved, but since it is a fixed type, the bending angle of the branch cannot be adjusted, and the branch cannot be bent to any angle. There is a problem that says it cannot be done.

An object of the present invention is to provide a branch straightening tool in which the bending angle of a branch can be arbitrarily set.

(d) Means for Solving the Problems In order to solve the above problems, in the branch adjustment tool of the present invention, the shaft body 1 is provided with locking parts 2a and 2b for the branches at each end. Each of the elastic rods 3a and 3b having a
At least one elastic rod 3 of a and 3b
The inner diameter of the coil spring portion 4a formed in a is set to be smaller than the outer diameter of the shaft body 1.
a is fitted onto the shaft body 1, and one of the elastic rods 3a is rotatable in the direction of loosening the coil spring portion 4a, but is fixed in the direction of tightening the coil spring portion 4a. The angle R between 3a and 3b is adjustable, so that the degree of elastic locking of the locking portions 2a and 2b to the branches via the shaft body 1 can be adjusted.

(E) Function The branch adjustment tool configured as described above has the shaft body 1 in contact with the lower surface of the branch in the bending direction, and the elastic rods 3a, 3b
By locking the locking parts 2a and 2b formed at the tips of the shaft body 1 to the branch portions on the opposite side of the shaft body 1, the branches are bent in the direction of the shaft body 1 due to the elastic force of the elastic rods 3a and 3b. When changing the degree of bending of the branches, the angle between the elastic rods 3a, 3b is changed by rotating the coil spring portion 4a or 5a formed on both or one of the elastic rods 3a, 3b in the loosening direction. By changing R, the elastic contact pressure on the branch is changed. By increasing the angle R between the elastic rods 3a and 3b, the branch is gently bent and straightened, and the angle between the elastic rods 3a and 3b is adjusted. By reducing R, the branches are straightened by bending at a steep angle.

(F) Example An example will be described with reference to the drawings. The main components of the branch adjustment tool are a shaft body 1 formed of a circular pipe material, each elastic rod 3a attached to this shaft body 1, 3b.

Each elastic rod 3a, 3b has a locking portion 2a, 2b for a branch formed at each end thereof, and is locked to the shaft body 1 at the other end in the following manner.

That is, the elastic rod 3a is formed with a coil spring part 4a, and the inner diameter of the coil spring part 4a is formed to be slightly smaller than the outer diameter of the shaft body 1, so that it is elastically attached to the shaft body 1. Make it fit.

With this configuration, the elastic rod 3a
is rotatable with respect to the shaft body 1 in the direction in which the coil spring portion 4a is loosened, but cannot be rotated in the direction in which the coil spring portion 4a is to be tightened, and the elastic rod 3a is fixed to the shaft body 1.

One elastic rod 3b is provided with a coil spring portion 5a based on the same principle as the coil spring portion 4a described above so that it can rotate only in the opposite direction to the elastic rod 3a described above.
Continuing from the coil spring portion 6, which has a slightly larger diameter
is formed, and the presence of this coil spring portion 6 gives the elastic rod 3b even more elastic force.

The locking portions 2a, 2b formed at the tips of the elastic rods 3a, 3b are formed in a curved shape to open the rotation side in the loosening direction of the coil spring portions 4a, 5a, and the locking portions 2a, 2b are configured such that they face each other inwardly and are prevented from coming off from the engaging branches.

In this embodiment, each elastic rod 3a, 3b
However, even if one of these is fixed and the other is rotatable in only one direction, the same purpose and effect can be achieved. It can be achieved.

When using the branch straightening tool configured as described above, one or both of the elastic rods 3a, 3b are rotated, and the coil spring portion 4 is rotated.
Rotate the elastic rods 3a and 5a appropriately in the loosening direction, and
By adjusting the angle R between 3b and changing the elastic contact pressure on the branch F, as shown in Fig. 6, when bending the branch F downward with respect to the branch F to be trimmed, , the shaft body 1 is placed on the lower surface of the branch F, and the elastic rods 3a, 3b are attached to the coil spring portions 4a, 5 thereof.
While pivoting in the tightening direction of a, the locking parts 2a and 2b are engaged with the upper surface of the branch F, which is on the opposite side of the shaft body 1.
It is bent as shown by the imaginary line F1 due to the elastic contact pressure of a and 3b.

Also, the angle R between the elastic rods 3a and 3b is
By rotating b as shown in the imaginary line 3b1 and adjusting it to an angle smaller than the angle R described above, the branch F is bent at a steep angle as shown in the imaginary line F2.

By locking the branch straightener to the branch F as described above, the branch F will continue to grow until the elastic force of each elastic rod 3a, 3b is released.
Under this elastic force, it naturally curves downward as desired.

In the above, a case has been described in which the pruning tool of the present invention is applied to fruit trees, but the present invention can also be used for trimming the branches of bonsai and the like.

(g) Effects of the invention Since the present invention is configured as explained above, it produces the effects described below.

1 By adjusting the angle of the elastic rods 3a and 3b, the elastic force thereof is changed and the branch straightening pressure is adjusted, so that the branch F can be bent to any desired angle.

In other words, regardless of the thickness of the branch F or the strength of the waist due to the old branch F or young tree branch F, the elastic rod 3
Appropriate branching can be performed by adjusting the angles of a and 3b.

2. The angle adjustment of the elastic rods 3a, 3b can be done simply by rotating the coil spring parts 4a, 5a in the loosening direction, and can be done quickly and easily without the need for any tools, and the angle adjustment is stepless. can be performed, and any desired cutting pressure can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a plan view of the trimmer, FIG. 2 is a rear view thereof, and FIG. 3 is a sectional view taken along line A-A in FIG. 1.
Figure 4 is a sectional view taken along line B-B in Figure 1;
The figure is a sectional view taken along line C-C in Figure 1, Figure 6 is a side view showing the state in which the branch straightener is locked to a branch, Figure 7 is an explanatory diagram of the conventional example, and Figure 8 is the arrangement of tree branches. It is an explanatory diagram of a state. 1... Shaft body, 2a... Locking part, 2b... Locking part, 3a... Elastic rod, 3b... Elastic rod, 4a...
Coil spring part, 4b...Coil spring part, R...Angle.

Claims (1)

[Claims] 1. Each elastic rod 3a, 3b having a branch locking part 2a, 2b at each end is secured to the shaft 1, and the elasticity of at least one of these elastic rods 3a, 3b is The inner diameter of the coil spring portion 4a formed on the rod 3a is set to be smaller than the outer diameter of the shaft body 1, so that the coil spring portion 4a is attached to the shaft body 1.
One of the elastic rods 3a is rotatable in the loosening direction of the coil spring part 4a, but is fixed in the tightening direction of the coil spring part 4a, so that the elastic rods 3a and 3b are The angle R is adjustable, and each locking portion 2a, 2 is connected via the shaft body 1.
A pruning tool for fruit trees, etc., characterized in that the degree of elastic engagement with the branches can be adjusted according to (b).