JP2003304744A - Manually opening or closing type pruning shears - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide pruning shears which can stably prune a plant without causing the slipping movement of the shears, such as a relative escape movement from the plant. <P>SOLUTION: This manually opening or closing type pruning shears (S) comprising a pair of right and left blade bodies (1a), (1b) pivotally bound to each other in an approximately X-shape through a pivot (2) and a pair of right and left handle pipes (3a), (3b) integrally extended from the base portions of the blade bodies (1a), (1b), respectively, is characterized by notching one or two plant-receiving dent grooves (8), (8a), (8b) in one or both of the right and left blade bodies (1a), (1b) in a state sunk from the sharp blade edges (6a), (6b) of the blade bodies (1a), (1b) and sharpening the notched opening edges of the dent grooves (8), (8a), (8b) as restrained blade tips (9), (9a), (9b) continued from the blade edges (6a), (6b). <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a manual scissor-type cutting scissors.

[0002]

2. Description of the Related Art A manual open / close type cutting scissors used for pruning or cutting a plant tree is, for example, Utility Model Registration No. 300.
It is publicly known as seen in Japanese Patent Laid-Open No. 1024-1024 and Japanese Patent Application Laid-Open No. 9-191766, and a handle rod integrally extended from a pair of left and right blades is grasped by both hands and opened / closed by a user's manual labor. It is designed to cut through the plant.

[0003]

However, in the conventional cutting scissors, as is apparent from the above-mentioned known invention and the known invention,
If the blade edges of both blades are processed into sharp ridges, the leopard will only extend as a simple straight shape, so if it is a thin plant tree, it can be reasonably and reliably cut However, if you use it for thick plants, the blade edge will slide and move relative to the plants,
It cannot be easily clipped at the desired position.

In this respect, if the plant is too thick, it is sufficient to cut it using a saw instead of the cutting scissors, and therefore a plant having a delicate thickness becomes a problem from the user's perspective. If the prediction and judgment are incorrect, for example, a stepladder or ladder may have to be climbed up and down many times, which is very troublesome for the work.Such a situation occurs remarkably due to rusting and wear of the cutting edge. .

Further, even in the case of a thin plant, even if it is difficult to fully open both blades of the trimming scissors to the root of the blade due to an obstacle such as branching, it is impossible to insert the plant deeply into the plant. The human power of the user cannot be effectively applied, and the blade edge slides and moves relative to the plant tree, and it may not be possible to reliably pinch it.

[0006]

DISCLOSURE OF THE INVENTION The present invention intends to improve such a problem. Therefore, a pair of left and right blades pivotally connected to each other in a substantially X shape through a pivot shaft are provided. In a manually-opening and cutting scissors comprising a pair of left and right handle tubes that are integrally extended from the roots of both blades, a groove for receiving a plant is provided on either or both of the blades. It is characterized in that the sharp cutting edges of the body are notched so as to be recessed, and the notched opening edges of the concave grooves are sharpened as continuous restraining cutting edges with the cutting edges.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The concrete constitution of the present invention will be described in detail below with reference to the drawings. First, FIGS. 1 to 7 show a first embodiment of the cutting scissors (S) according to the present invention. (1a)
(1b) is made of stainless steel plate and has almost the same size.
A pair of left and right blades formed in a shape, which are pivotally connected to a substantially X-shape in a front / rear view by a rotation fulcrum shaft (2) consisting of a bolt and a fastening nut that penetrate through the middle portion thereof. There is.

(3a) and (3b) are double-edged bodies (1a) (1
The grip covers (4a) (4b), which are a pair of left and right handle rods that are integrally extended from the root of (b), are made of an aluminum tube, and are attached to the extended tips of the grips (4a) (4a) made of rubber or synthetic resin. ) With both hands, double-edged body (1a)
The (1b) is opened and closed around the rotation fulcrum shaft (2). The lengths of the two handle rods (3a) (3b) may be changed differently depending on various types of cutting scissors (S), or may be configured to be expandable and contractible.

Further, (5a) and (5b) are also double-edged bodies (1
a) A pair of left and right closed positioning stopper pieces that are continuously projected inwardly from the vicinity of the root of (1b), and when the pair hits each other, the two blades (1a) (1b) ) Is kept in a normally closed state as shown in FIG.

However, such double-edged bodies (1a) (1b)
In place of the pair of left and right closed positioning stopper pieces (5a) and (5b) which project inward continuously from the above, one separate closed positioning pin (not shown) is attached to one blade (1a),
As a corresponding positional relationship capable of receiving the remaining other blade body (1b), it may be planted and integrated.

The tips of both blades (1a) (1b) are a pair of left and right straight blades (6a) (6b), and a sharp ridgeline (7a) (around a certain working length (L1) (for example, about 135 mm)). It is needless to say that the plant tree (M) is sandwiched by the pair of sliding parts.

A groove (8) for receiving a plant is formed on either of the left and right sides of the two blades (1a) (1b) so as to be depressed by a certain depth (D) from the ridgeline (7a) of the cutting edge (6a). It is cut out. Moreover, the notched opening edge of the concave groove (8) is provided with a ridge line (10) continuous with the remaining straight blade edge (6a) as a sharp restraining blade edge (9).

In addition, regarding the notch opening length (L2) of the recess groove (8) for receiving the plant, the thickness of the plant (M) and the working length (L1) of the straight cutting edge (6a), etc. In consideration of the relationship, for example, an appropriate selection of about 20 mm may be made, but the notch opening depth (D) of the concave groove (8) is the same as suggested by FIGS. 1a) In order to prevent a decrease in the strength of itself, it is preferable to set the size (for example, about 7 to 10 mm) that does not reach half of the blade body width (W) (for example, about 30 mm) at the cutout portion.

In this respect, in FIGS. 1 to 7, the plant receiving groove (8) has an arc shape that smoothly curves in a positive / rear view, and extends from the inside of the groove (8) to the blade (1a). Although it prevents the occurrence of cracks and cracks, and is easily shaped to fit the plant tree (M), its restraining blade edge (9) forms a continuous conical surface with the straight blade edge (6a), Instead of the circular arc shape, a U-shaped shape, a V-shaped shape, a W-shaped shape having a rounded corner as shown in FIG.

Regarding the cutout portion of the groove for receiving the plant (8) with respect to one blade body (1a), among the cutting edges (6a) extending by a constant working length (L1),
As shown in FIGS. 4 and 5, one end (P
1) corresponds and matches with the root portion (E) of the blade edge (6a), and from there toward the tip side of the blade body (1a), a constant opening length (L2) (about 20 mm exemplified above) In other words, it is preferable to set the positional relationship so that the notch starts.
(P2) suggests the other end of the cutout opening of the groove (8).

Then, a constant working length (rotation radius) (R1) from the rotation fulcrum shaft (2) of the two blades (1a) (1b) to the gripping position on the handle rods (3a) (3b).
Similarly, compared with (for example, about 410 mm), the working length (rotation radius) (R2) (for example, about 2 mm) from the rotation fulcrum shaft (2) to the notch center portion of the plant receiving groove (8). 25 mm) is the shortest as shown in FIG. 1, and is based on the so-called principle of movement of the scissors, the cutting blades (S) of the two blade bodies (1a) (1b) of the blade tips (6a) (6b) While fully opening to the root (E) at about 90 degrees, even a thick plant (M) can be stably and reliably pinched from its desired position under extremely light operating force.

Incidentally, the other blade body (1b) which does not have the above-mentioned groove (8) for receiving the plant tree has a cutting edge (6b) shown in FIG.
It is desirable to carve it as thin saw teeth (11) such as ~ 6, which also helps prevent relative sliding movement with the plant (M).

The cutting scissors (S) can be handled and used in the same manner as conventional scissors, and when pruning or cutting the plant (M), a pair of left and right blades (1a) (1b) is used. ) Is opened, inserted deeply into the plant (M), and both blades (1a) (1b) are closed.

Then, since the plant tree (M) is received inside the plant receiving groove (8) cut out in one blade body (1a) as shown in FIG. 9, the thick plant ( Even in M), the cutting edge (6a) (6b) relative to this
There is no risk of sliding movement as if it escaped, and the restraining blade edge (9) consisting of the notched opening edge of the concave groove (8)
And the straight blade edge (6b) provided on the other blade body (1b) slide against each other, so that
As described above, it is possible to stably and surely clip from a desired position.

In that case, even if the plant tree (M) is slightly thicker than the notch opening length (L2) and the notch opening depth (D) of the concave groove (8), the concave Groove (8)
At one end (P1) and the other end (P1)
2) acts as a claw that bites the plant tree (M) as shown in FIG. 11, so that relative sliding movement with the plant tree (M) does not easily occur, and it is also possible to reliably and reliably pinch the plant tree (M). .

Next, FIG. 12 shows a second embodiment of the present invention. In the cutting scissors (S), the other blade (1b) is used.
Also, install a groove (8b) for receiving the plant in one blade (1
It is shallower than the concave groove (8a) cut out in a), and is notched in a phase change state in a portion that is closer to the tip side of the blade body (1b) than this.

According to this, it is difficult to fully open the blades (1a) (1b) of the cutting scissors (S) to the roots of the blades (6a) (6b) due to branching of the planting tree (M). Even in such a case, the plant receiving groove (8b) cut out on the tip side of the other blade (1b) can be used to receive the plant (M), so that this can be done without any trouble. The groove (8a) (8b), which has the advantage of being pinched off and is in the phase change state, has double blades (1a) (1b).
The blade body (1
a) There is no risk of the strength reduction of (1b).

Further, FIG. 13 shows a third embodiment of the present invention. As is clear from the trimming scissors (S), the pair of left and right blades (1a) (1b) is provided with the groove for receiving the plant ( 8a) and (8b) have a size corresponding to each other.
The shape and the positional relationship may be cut out.

According to this, the plant tree (M) has a double-edged body (1
a) Sliding of the constraining cutting edges (9a) and (9b) which are received between the facing concave grooves (8a) and (8b) of the (1b) and which are notched opening edges of the both concave grooves (8a) and (8b). Due to the interaction, it is more and more reliably and reliably sandwiched, and the blades (1a) and (1b) can be made into the same size and shape as a whole including the concave grooves (8a) and (8b). There is excellent mass production effect.

Since the other constructions of the second and third embodiments are substantially the same as those of the first embodiment, only the reference numerals corresponding to those of FIGS. 1 to 11 are shown in FIGS. , Its detailed description is omitted.

[0026]

As described above, according to the present invention, a pair of left and right blades (1a) (1b) pivotally connected to each other in a substantially X-shape through the pivot shaft (2) and both blades (1a). ) Handle tube (3a) integrally extended from the root of (1b)
In the manual opening and closing type cutting scissors (S) including the left and right pair of (3b),

Groove receiving recesses (8) (8a) (8) on either or both of the blades (1a) (1b).
b) with the sharp cutting edge (6) of the blade body (1a) (1b).
a) (6b) is notched into a depressed state,

The notched opening edges of the concave grooves (8), (8a) and (8b) are sharpened as continuous constraining cutting edges (9) (9a) (9b) with the cutting edges (6a) (6b). Therefore, there is an effect that the problems of the prior art described at the beginning can be completely improved.

That is, according to the above-mentioned structure of the present invention, to the plant receiving groove (8) (8a) (8b), which is cut out in either one or both of the right and left sides of the blade (1a) (1b), Even for thick plant trees (M), the cutting edge (6a) (6
Since there is no danger of the sliding movement of b) as it escapes, the planting tree (M) can be clipped stably and reliably at the desired position, and no stepladder or ladder should be used to bring out the saw due to an error in the prediction. The troublesome work of going up and down is eliminated.

In particular, if the structure of claim 2 is adopted,
The thick plant (M) can be more and more stably received between the opposing groove-grooves (8a), (8b) of the two blades (1a) (1b) for facing each other, and they can slide under the condition. Due to the working cutting edge (9a) (9b),
In addition to the effect that anyone can easily and reliably pinch it, the pair of left and right blades (1a) (1b) can be cut into the concave grooves (8a) (8b).
Including the above, it is possible to create the same size and shape as each other, which is excellent in mass production effect.

If the construction of claim 3 is adopted, the blades (1a) (1b) of the trimming scissors (S) are damaged by the branching of the planting tree (M), and the cutting edges (6a) (6) thereof.
Even if it is difficult to fully open up to the root of b), use the groove for receiving the plant tree (8b) notched on the tip side of the other blade (1b) to reliably receive the plant (M) Therefore, there is an effect of being able to be sandwiched without any trouble, and there is no fear that the rigidity of both blades (1a) (1b) is excessively reduced.

Particularly, if the structure of claim 4 is adopted,
In spite of being able to achieve the effect of receiving the above-mentioned plant (M) and its stable and reliable clipping operation, the double-edged bodies (1a) (1
The reduction in strength of b) can be reasonably prevented, which is highly practical.

Further, if the structure of claim 5 is adopted, it is easy to fit with the plant tree (M), and the plant tree (M) is restricted by the restraining blade edges (9) of the plant receiving grooves (8) (8a) (8b). )
By (9a) and (9b), it is possible to more easily and stably sandwich, and the above-mentioned concave grooves (8) (8a) (8
There is no fear that cracks or breaks will occur from b) to the blade bodies (1a) and (1b), which is useful for improving durability strength.

If the structure of claim 6 is adopted, the pair of left and right blades (1a) and (1b) are fully opened, and even a thick planting tree (M) has a remarkably light operating force based on the so-called principle of action of a boom. It can be said that it is a rational design that can be easily clipped under the original conditions and is easy for anyone to use.

[Brief description of drawings]

FIG. 1 is an overall schematic front view showing a first embodiment of scissors according to the present invention.

FIG. 2 is a partially enlarged front view showing a closed state of the blade body.

FIG. 3 is a side view of FIG.

FIG. 4 is a front view corresponding to FIG. 2 showing an open state of a blade.

FIG. 5 is a rear view of FIG.

6 is an enlarged sectional view taken along line 6-6 of FIG.

7 is an enlarged cross-sectional view taken along line 7-7 of FIG.

FIG. 8 is a front view corresponding to FIG. 4, showing a modified example of the groove for receiving the plant tree.

FIG. 9 is a front view showing a state of receiving a plant tree.

FIG. 10 is a front view of the action process of cutting the plant tree from the state of FIG. 9;

FIG. 11 is a front view showing a state of receiving a plant tree that is slightly thicker than the groove for receiving the plant tree.

FIG. 12 is a front view showing a second embodiment of the present invention.

FIG. 13 is a front view showing a third embodiment of the present invention.

[Explanation of symbols]

(1a) (1b) · Blade (2) · Rotating fulcrum shaft (3a) (3b) -handle rod (4a) (4b) · Grip cover (5a) (5b) -Closed positioning stopper piece (6a) (6b) / cutting edge (7a) (7b) ・ Ridge of the cutting edge (8) (8a) (8b) ・ Concave groove for receiving the plant (9) (9a) (9b) · Restraint blade edge (10) ・ Ridge line of restraining blade edge (11) ・ Sawtooth (S) -pruning shears (M) -plant (D) ・ Notch opening depth of concave groove (E) ・ Root of the cutting edge (W) · Blade width (L1) ・ Working length of cutting edge (L2) -Notch opening length of concave groove (P1) ・ One end of the opening of the groove (P2) ・ The other end of the groove opening

Claims (6)

[Claims] 1. A pair of left and right blades (1a) (1b) pivotally connected to each other in a substantially X shape through a pivot (2), and the roots of both blades (1a) (1b). In a manually opening and closing type cutting scissors (S) having a pair of left and right handle tubes (3a) (3b) integrally extended to each other, the blade body (1a) (1b) is provided on either the right or left side or both sides. The notches (8), (8a), and (8b) for receiving the plant trees are notched so as to be recessed from the sharp cutting edges (6a) and (6b) of the blade bodies (1a) and (1b), respectively. ) (8a), (8b) notch opening edge is sharpened as a continuous constraining cutting edge (9) (9a) (9b) with the cutting edge (6a) (6b), respectively Pruning shears. 2. A pair of left and right blades (1a) (1b) each having a groove (8a) (8b) for receiving a plant, which is cut out as a size and a shape and a positional relationship corresponding to each other. The manually-operated cutting scissors according to claim 1. 3. A groove (8a) for receiving a plant is cut out in either one of the left and right blades (1a), and the groove (8) is formed.
2. The manually opening-and-closing type according to claim 1, wherein the plant receiving groove (8b), which is shallower than a), is cut out as a phase change state in which the remaining blade body (1b) is biased toward the tip side. Pruning shears. 4. Groove receiving recesses (8) (8a) (8)
The notch opening depth (D) of b) is set as a dimension that does not reach half of the blade width (W) at the notch portion, the manual opening-closing type according to claim 1, 2 or 3. Pruning shears. 5. Groove receiving recesses (8) (8a) (8)
b) is a circular arc shape in normal / rear view in which the restraining blade edges (9) (9a) (9b) form a continuous conical surface with the blade edges (6a) (6b) of the blade bodies (1a) (1b). The manually-operated cutting scissors according to claim 1, 2 or 3, which is notched. 6. Groove receiving recesses (8) (8a) (8)
The notch part of b) is made into the concave groove (8) (8a) (8
The notch opening one end (P1) of b) is the cutting edge (6a) (6
The manually-operated cutting scissors according to claim 1 or 2, wherein the positional relationship is set so as to correspond to the root portion (E) of b).