JPS5920032Y2 - electric twig cutter - Google Patents

Description

[Detailed description of the invention] This invention relates to an electric twig cutter suitable for fruit thinning work in fruit tree cultivation.

For example, in fruit thinning work, in order to streamline the work, instead of conventional pruning shears, a cutting blade is installed outside the tip of the cylindrical body case that houses a motor, etc., and this cutting blade is connected to the motor. Electric twig cutters designed to be rotated by a motor are already in use in some areas.

However, with the above configuration, the rotating cutting blade hits the fruit twigs and cuts them with an impact, so if the cutting blade does not hit the fibrous twigs at the right time, the twigs will be cut sharply. It has the disadvantage of being difficult to deal with.

The above-mentioned fear can be eliminated by applying an inertial force to the cutting blade when it hits the fibrous twig.

For this reason, it may be possible to fix a weight to the cutting blade, but in that case, when the cutting blade rotates with inertia due to the above-mentioned mold, the tip side of the main body case will be swung by the gyroscopic action during use, so the cherry blossoms will When several fruits are concentrated, such as in the case of twigs with unnecessary fruits, it becomes difficult to identify only the twigs with unnecessary fruits and bring the cutting blade closer to them.
There is also a risk of inadvertently cutting off suitable fruit twigs.

Therefore, this invention attaches a flywheel to the rotating body inside the case corresponding to the handle part of the main case, and connects this flywheel to the cutting part via an elastic connecting member, thereby inertia-freeing the twigs. To provide an easy-to-handle electric twig cutter capable of sharply cutting with force, with little shaking of a main body case or impact transmitted to the main body case during cutting, and capable of performing stable pruning work.

An embodiment of this invention will be described below with reference to the drawings.

The drawing is a cutaway front view showing an example of the twig cutter according to this invention. In the figure, 1 is a cylindrical main body case, and the base end side constituting the handle part 2 is formed with a large diameter and has a large diameter inside. battery 3
and a motor 4, etc., and the tip 5 side is formed to have a small diameter to avoid hitting the fruit.

The base end 2 side and the distal end 5 side of the main body case 1 are both 2
, 5 can be attached and detached using the threaded portion 6.

The base end surface of the main body case 1 is open as a battery exchange lower, and this battery exchange lower is closed with a cap 9 having a conductive spring member 8 for holding down the battery.

Reference numeral 10 denotes a rotary driving body that is supported by a bearing body 11 fixed in the tip 5 of the main body case 1 and protrudes from the tip. The cutting blade 13 is fixed, and the driving body 1
The base end of the motor 4 is connected to the rotating shaft 15 side of the motor 4 via a connecting member 14 having elasticity such as a coil spring.

16 is a blade cover of the cutting blade 13; 17 is a blade cover mounting base fixed to the tip of the main body case 1; these covers 16 and the like constitute a cutting section 18 together with the cutting blade 13.

A cutting blade 13 is attached to the rotating shaft 15 of a rotating body, for example, the motor 4, at a position corresponding to the handle portion 2 of the main body case 1.
In order to impart inertia to the rotation of the flywheel 19
is fixed.

Note that 20 is an operation button for a power switch (not shown).

In the above configuration, when the motor 4 is rotated, the cutting blade 13 is rotationally driven via the connecting member 14 and the rotary drive body 10.

At this time, since the flywheel 19 fixed to the rotating shaft 15 of the motor 4 rotates, its flywheel effect is transmitted to the cutting blade 13, and by simply applying the cutting blade 13 to the twig M, the fibrous material can be cut. The held twig M is sharply cut.

In particular, since the flywheel 19 is fixed to the rotating shaft 15 of the motor 4 corresponding to the handle part 2, the cutting part 18 side is less likely to swing due to the flywheel effect when the cutting blade 13 rotates. Therefore, unnecessary twig M
Once the twig M is determined, only that twig M can be cut reliably, and the cutting operation can be carried out efficiently.

In addition, this invention connects the cutting part 18 and the flywheel 19 via the elastic connecting member 14 as described above, so if the cutting blade 13 accidentally touches a tree branch or trunk or the cutting is insufficient, Even if the cutting blade 13 momentarily becomes locked as in the case where the cutting blade 13 is locked, the elasticity of the connecting member 14 temporarily disconnects the connection between the flywheel 19 and the flywheel 19 and the motor 4. It is possible to prevent sudden locking of the motor 4, damage to the connecting member and motor 4, and prevent impact from being applied to the handle.

As described above, this invention is an electric twig cutter that has a cutting part at the tip of the cylindrical body case and a handle part on the proximal end side, which is arranged in the case in correspondence with the handle part. The rotary body side and the cutting section are connected through an elastic connecting member, and a flywheel is fixed to the rotary body and the flywheel is placed at a position corresponding to the handle, so that the handle does not touch the handle when cutting. The cutting effect of the cutting blade can be enhanced while stability is reliably maintained, high efficiency of cutting work can be ensured, and an easy-to-handle electric twig cutter can be provided.

[Brief explanation of the drawing]

The drawing is a cutaway front view showing an example of the electric twig cutter according to the invention. DESCRIPTION OF SYMBOLS 1... Main body case, 2... Handle part (base end part) 14... Connecting member, 15... Rotating body, 18... - Cutting section, 19...Flywheel.

Claims (1)

[Scope of utility model registration request] In an electric twig cutter having a cutting part 18 at the tip of a cylindrical main body case 1 and having a handle part 2 at the base end, a rotating body 15 disposed within the case 1 in correspondence with the handle part 2. The side and the cutting part 18 are connected via an elastic connecting member 14, and a flywheel 19 is fixed to the rotating body 15, and the flywheel 19 is arranged at a position corresponding to the handle part 2. An electric twig cutter featuring: