JP3185548U - Movable blade of clipper type pruning device - Google Patents

Abstract

Provided is a movable blade for a clipper type pruning device that can use a clipper type pruning device regardless of the thickness of a branch to be pruned when pruning a leaf or a branch of a tree.
A plurality of blade portions 20 are formed in a comb shape so as to protrude continuously at both edges of a plate-like body, and each blade portion 20 has two pruning blades 21 and two pruning portions. One cutting blade 25 located between the blades 21 is formed, and the pruning blade 21 of one blade portion 20 and the pruning portion of the other blade portion 20 between two blade portions 20 adjacent to each other. The cutting blade 21 is made to face each other, and two sharp teeth 27 are formed on the cutting blade 25.
[Selection] Figure 1

Description

  The present invention relates to a movable blade of a clipper type pruning device used when pruning or cutting a tree or the like.

As a tool used when pruning leaves and branches of trees, a clipper pruning apparatus has been developed (see, for example, Patent Document 1).
The clipper type pruning device includes first and second drive bodies that are driven to reciprocate in opposite directions, and first and second drive bodies that are detachably engaged with the first and second drive bodies and that are driven to reciprocate integrally. A second cutting blade body and a pair of detachable guide plates that slidably hold these members are provided.
Then, the leaves and branches of the tree are pruned by sandwiching the leaves and branches of the tree between the cutting blade of the first cutting blade body and the cutting blade of the second cutting blade body.

JP 2010-000001 A

  When a clipper pruning device is used to prune leaves and branches of a tree, the target branches are not necessarily thin branches. It can also happen frequently that a thick branch has to be cut. However, even if an attempt is made to cut a thick branch with a clipper type pruning device, an excessive load is applied to the motor that is a driving source, and seizure tends to occur. For this reason, when cutting a thick branch, it is necessary to use a saw every time, which is a troublesome work for the operator and lowers the work efficiency.

  The present invention solves the above-mentioned problems, and the purpose of the present invention is to enable use of a clipper type pruning device regardless of the thickness of the branch to be pruned when pruning leaves and branches of a tree. It is to provide a movable blade for a clipper type pruning device.

  The present invention has the following configuration in order to solve the problem. The movable blade of the clipper pruning apparatus according to claim 1 is a movable blade that is mounted on the clipper pruning apparatus and reciprocates, and a plate-like body that extends in a direction in which the movable blade reciprocates; A plurality of blades arranged in a comb-like manner at the edges on both sides of the body, and each of the blades is between two pruning blades and the two pruning blades. Two cutting blades adjacent to each other in the reciprocating direction of the movable blade, and the pruning blade of one of the blade portions and the other blade The pruning blades of the section face each other, and the cutting blade is formed with one or a plurality of pointed teeth.

  Two movable blades that make a pair are mounted on the clipper pruning device. The two movable blades attached to the clipper pruning device reciprocate in the longitudinal direction of the plate-like body. The direction in which one movable blade moves and the direction in which the other movable blade moves are always opposite directions. As the movable blade reciprocates, the blade portion of the movable blade also reciprocates together.

  When pruning leaves and thin branches, etc. using a clipper pruning device equipped with two movable blades, the leaves and thin branches, etc. are pruning blades of one movable blade and the other movable blade. Between the blades of the pruning blade and the pruning blades on both sides. This is the same as the movement when a known clipper pruning apparatus prunes leaves, thin branches, and the like of trees.

At the same time, leaves, thin branches, and the like are cut by the cutting blades of the blade portions of the two movable blades that are reciprocating.
When it is necessary to cut a thick branch or the like that is difficult to push between two pruning blades, the cutting blade at the tip of the two reciprocating blades is moved to the thick branch. What is necessary is just to press on the part which should be cut | disconnected, such as. The teeth of the cutting blade of the blade portion of the movable blade that reciprocates gradually scrape thick branches and the like, and the thick branches and the like are cut.

  Therefore, by using a clipper type pruning device equipped with two movable blades, it is possible not only to prune leaves and thin branches of trees, but also to cut thick branches, and there is no need to use a saw.

  The movable blade of the hair clipper pruning apparatus according to claim 2 is the movable blade of the hair clipper pruning apparatus according to claim 1, wherein all the teeth are directed toward the surface side of the plate-like body. A warp is formed.

When two movable blades are attached to the clipper pruning apparatus, the back surfaces of the plate-like bodies of these movable blades face each other and overlap each other.
When cutting a thick branch of a tree with a clipper type pruning device, as described above, the teeth of the cutting blades of the two movable blades sharpen the branches, and the blade portions of the two movable blades bite into the branches. Grooves are formed in the branches.

  In the blade portions of the two movable blades that are overlapped, the thickness of the portion where the cutting blade is formed is thicker than the other portions by the amount of warpage of the teeth. Accordingly, the width of the groove formed by the cutting blades of the two movable blades biting into the branch is such that the cutting blade teeth of one of the movable blades of the two movable blades overlapped with each other. This is the width to the tip of the tooth of the cutting blade of the movable blade.

  In the groove formed by the bites of the two movable blades, the teeth of the cutting blade of the blade part are almost in contact with the inner surface of the groove. There is a gap between the other part of the blade and the inner surface of the groove. For this reason, when cutting a thick branch of a tree with a clipper type pruning device, the friction generated between the blade portion other than the teeth of the cutting blade and the inner surface of the groove is reduced, cutting a thick branch, etc. Will be performed by Sumes. Moreover, the wood chips are also smoothly discharged out of the groove.

  Since it is a movable blade for the clipper pruning apparatus as described above, the clipper pruning apparatus can be used regardless of the thickness of the branch to be pruned.

It is a partial block diagram of the two movable blades piled up in a state of being mounted on the clipper pruning device. It is the II sectional view taken on the line of FIG. It is explanatory drawing of the groove | channel formed when a thick branch is cut by the clipper type pruning apparatus. It is a partial block diagram of two movable blades according to a modified example that are superposed in a state of being mounted on the clipper pruning device.

An embodiment of the present invention will be described with reference to FIGS.
As shown in FIG.1 and FIG.2, movable blade 1A, 1B has the elongate plate-shaped body 10 extended in lengthwise. The thickness of the plate-like body 10 is d1. In FIG. 1, the surface 11 of the plate-like body 10 of the movable blade 1 </ b> A faces the front side of FIG. 1, and the back surface 12 of the plate-like body 10 of the movable blade 1 </ b> B faces the front side of FIG.

The plurality of blade portions 20 are arranged so as to protrude in a comb shape at the edge in the longitudinal direction of the plate-like body 10. The pitch interval between the blade portions 20 adjacent to each other in the longitudinal direction of the plate-like body 10 is D.
The blade portion 20 has a substantially trapezoidal shape and protrudes from the plate-like body 10, and two pruning blades 21 and one cutting blade 25 are formed on the edge of the blade portion 20.

  The two pruning blades 21 formed on one blade portion 20 have a substantially square shape, and the interval between the two pruning blades 21 is gradually increased from the proximal end side to the distal end side of the blade portion 20. It is narrowed to. The peg 22 of the pruning blade 21 is formed on the surface 11 side of the plate-like body 10 on which the pruning blade 21 is formed.

  Further, at the base end of the blade portion 20, the distance from the end portion of one of the pruning blades 21 to the end portion of the other pruning blade 21 of the blade portion 20 is D / 2. In FIG. 1, the blade portion 20 of the movable blade 1B is visible from the valley portion formed between the blade portions 20 adjacent to each other in the longitudinal direction of the plate-like body 10 of the movable blade 1A.

  One cutting blade 25 is positioned between the two pruning blades 21 on the distal end side of the blade portion 20. The cutting blade 25 has a V-shaped notch, and sharp teeth 27 are formed on both sides of the V-shaped notch. That is, one blade portion 20 has two teeth 27. The distance between the tips of these two teeth 27 is smaller than D / 2.

Each tooth 27 has a warp toward the surface 11 side of the plate-like body 10 on which the tooth 27 is formed. The amount of warpage of the teeth 27 is d2. Further, the barb 29 of the tooth 27 is formed on the back surface 12 side of the plate-like body 10 on which the tooth 27 is formed.
The movable blades 1A and 1B have the configuration described above. Next, the effect is demonstrated.

The movable blades 1A and 1B are mounted on a clipper type pruning device (not shown) with the back surfaces 12 facing each other and the center line CL in the longitudinal direction of each plate-like body 10 being overlapped. Has been.
The movable blades 1A and 1B reciprocate in the longitudinal direction of the plate-like body by the drive mechanism of the clipper pruning device. The direction in which the movable blade 1A moves and the direction in which the movable blade 1B move are always opposite directions. As the movable blades 1A and 1B reciprocate, the respective blade portions 20 also reciprocate together.

First, a case where an operator prunes a tree leaf or a thin branch using a clipper pruning device will be described.
The leaves and the thin branches are sandwiched between the pruning blades 21 of the movable blades 1A and 1B that reciprocate and pushed. Further, the leaves and thin branches are also cut by the cutting blades 25 of the movable blades 1A and 1B that reciprocate.

Next, the case where an operator cuts the thick branch 40 of a tree with a clipper pruning device will be described with reference to FIG.
The operator presses the tip of the blade part 20 of the movable blades 1 </ b> A and 1 </ b> B that reciprocates on the branch 40. First, the surface of the branch 40 is shaved by the teeth 27 of the blade part 20. Then, the blade 20 gradually bites into the branch 40, and the groove 41 is formed in the branch 40. Since the movable blades 1 </ b> A and 1 </ b> B are overlapped, the following expression (1) is established between the width W of the groove 41, the thickness d <b> 1 of the plate-like body 10, and the warpage amount d <b> 2 of the teeth 27.
W = 2 · (d1 + d2) (1)

And the blade part 20 bites into the branch 40 deeply, the depth of the groove | channel 41 becomes deep, and the branch 40 is cut | disconnected soon.
In the state where the blade portion 20 of the movable blade 1A and the blade portion 20 of the movable blade 1B overlap, the thickness of the blade portions 20 other than the cutting blade 25 overlapping each other is 2 · d1, It is smaller than the width W of the groove 41 by 2 · d2. Therefore, almost only the tips of the teeth 27 of the cutting blade 25 are in contact with the inner surface of the groove 41, and there is a slight gap 42 between the other part of the blade portion 20 and the inner surface of the groove 41. Yes.

  For this reason, when cutting the branch 40 with the clipper pruning device, the friction generated between the blade portion 20 other than the teeth 27 of the cutting blade 25 and the inner surface of the groove 41 is reduced, and the branch 40 is cut. Is done smoothly. In addition, the wood chips generated along with the cutting of the branch 40 are easily discharged from the gap 42 to the outside of the groove 41.

Therefore, with the clipper pruning device equipped with the movable blades 1A and 1B, not only the leaves of trees and thin branches but also the cutting of the thick branch 40 can be performed without using a saw.
In the present embodiment, one blade portion 20 has two teeth 27. Instead of this, it is also possible to adopt the configuration shown in the modified example of FIG.

The movable blades 1 </ b> C and 1 </ b> D according to the modification include the plate-like body 10, the blade portion 20, and the pruning blade 21, similarly to the movable blades 1 </ b> A and 1 </ b> B. However, the cutting blades 26 included in the blade portions 20 of the movable blades 1C and 1D are different from the cutting blades 25 of the movable blades 1A and 1B in the following points.
One cutting blade 26 is positioned between the two pruning blades 21 on the tip side of one blade portion 20. The cutting blade 26 is shaped like a chevron, and the cheeky part forms teeth 28. That is, one blade portion 20 has one tooth 28.

Each tooth 28 has a warp toward the surface 11 side of the plate-like body 10 on which the tooth 28 is formed. The amount of warpage of the teeth 28 is d2. Further, the barb 29 of the tooth 28 is formed on the back surface 12 side of the plate-like body 10 on which the tooth 28 is formed.
The cross section taken along the line II-II in FIG. 4 is the same as the cross section taken along the line II in FIG. However, the II-II line cross section of FIG. 4 is different from the II line cross section of FIG. 1 in the following points. That is, in the cross section taken along the line II-II in FIG. 4, the movable blades 1C and 1D can be seen instead of the movable blades 1A and 1B, and the cutting blade 26 and the teeth 28 can be seen instead of the cutting blade 25 and the teeth 27. Become.

The movable blades 1C and 1D having such a configuration have the same operations and effects as the movable blades 1A and 1B.
Further, in the present embodiment or modification, one blade portion 20 may have three or more teeth.

  Furthermore, in the present embodiment or the modification, the edges of the cutting blades 25 and 26 are linear, but the edges of the cutting blades 25 and 26 may be curved inward. However, since the movable blades 1A, 1B, 1C, and 1D reciprocate, the cutting blades 25 and 26 are formed symmetrically when the plate-like body 10 is viewed from the front surface 11 or the back surface 12. Is preferred.

  Since it is a movable blade of the hair clipper type pruning apparatus as described above, it is useful in the landscaping industry that handles trees.

1A, 1B, 1C, 1D Movable blade 10 Plate body 11 Surface of plate body 12 Back surface of plate body 20 Blade portion 21 Pruning blade 22 Pruning blade tapping 25, 26 Cutting blade 27, 28 Teeth 29 Teeth Nosage 40 Branch 41 Groove 42 Clearance CL Center line in the longitudinal direction of the plate-like body D Pitch interval at which the blade is formed d1 Thickness of the plate-like body d2 Amount of warpage of the tooth W Groove width

Claims (2)

A movable blade mounted on a clipper type pruning device and reciprocating,
A plate-like body that extends in the direction in which the movable blade reciprocates, and a plurality of blade portions that are continuously arranged to protrude in a comb shape at the edges on both sides of the plate-like body,
Each of the blade portions has two pruning blades and one cutting blade located between the two pruning blades,
In the two blade portions adjacent to each other in the direction in which the movable blade reciprocates, the pruning blade of one of the blade portions and the pruning blade of the other blade portion face each other,
The movable blade of the clipper type pruning apparatus, wherein the cutting blade is formed with one or a plurality of pointed teeth.   The movable blade of the clipper type pruning apparatus according to claim 1, wherein all the teeth are warped toward the surface side of the plate-like body.

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