JPH0574238U - Pruning shears - Google Patents

Abstract

(57) [Summary] [Structure] A pair of scissors constituting members 3 and 4 each having a receiving blade 1 and a cutting blade 2 which are curved in the same direction are rotatably pivoted on a support shaft 5, The object 6 to be cut is put in place on the receiving blade 1.
It is characterized in that a notch 7 for controlling the positioning of is provided. [Effect] Positioning the receiving blade 1 is easy and reliable,
Practical effects such as relatively thick branches and hard-branched branches can be quickly completed without significant fatigue, work efficiency can be improved, and production is simple and inexpensive. Play.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 According to the present invention, a pair of scissors constituting members each having a receiving blade and a cutting blade that bend in the same direction are rotatably pivoted on a support shaft to cut off a thick branch or to cut fruit trees or roses. The present invention relates to improvement of pruning scissors used for pruning.

[0002]

[Prior Art]

 Generally, pruning scissors insert a support shaft projecting from the scissor component on the receiving blade side into a circular or arc-shaped through hole provided on the scissor component on the cutting blade side, and the pair of scissor component members open and close with each other. It is pivotally attached so that it can move freely. By the way, in conventional pruning scissors, both the receiving blade and the cutting blade are usually formed with a constant blade angle from the base to the tip along the blade line. The blade line of is formed by a single smooth curve.

[0003]

[Problems to be solved by the device]

 However, with pruning scissors having such a shape of the cutting blade and the cutting blade, the cutting object hitting the cutting blade is extremely slippery along the blade line direction, and the positioning of the cutting object is difficult. The blade edge is difficult to bite into the object to be cut, and even if a large amount of labor is applied to cut, the cutting function is not effective and the work efficiency is significantly reduced.

It is an object of the present invention to solve the above problems, provide reliable and easy positioning with respect to an object to be cut, and inexpensively provide pruning scissors capable of exhibiting an effective cutting function.

[0005]

[Means for Solving the Problems]

 In the pruning scissors according to the present invention, a pair of scissors constituting members 3 and 4 each having a receiving blade 1 and a cutting blade 2 which are curved in the same direction are rotatably pivoted on a support shaft 5, It is characterized in that a notch 7 for controlling the positioning of the object 6 is provided at an appropriate position of the receiving blade 1.

[0006]

[Action]

 When using the pruning scissors according to the present invention, first, the branches of fruit trees or roses, which are the objects to be cut 6, are inserted between the receiving blade 1 and the cutting blade 2 in advance. Next, in this state, the object to be cut 6 is brought into contact with the notch 7 provided in the portion of the receiving blade 1 which is opposed to the cutting object 6, and the receiving blade 1 and the cutting blade 2 are fixed to the receiving blade 1 and the cutting blade 2. The pruning work can be performed by closing the gripping portions 8 and 9 which are integrated with each other. In other words, the cut object 6 is positioned by the notch 7 with respect to the blade line direction of the receiving blade 1, and the pruning action is performed in a state in which the cut object 6 is prevented from sliding in the blade line direction, so that the cut object is easily performed. The cutting edge of the receiving blade 1 bites into the object to be cut 6 and exerts an effective cutting function.

Further, the portion of the receiving blade 1 facing the object 6 to be cut at the start of cutting, that is, the portion where the cutting into the object to be cut is started is provided at a close distance from the spindle 5. It is possible to exert the bite function more effectively and surely with a relatively small force.

[0008]

[Effect of the device]

 Since the pruning scissors according to the present invention have the above-mentioned configuration and operation, the positioning of the receiving blade 1 can be easily and surely performed, and even a relatively thick branch or a hard branch of material can be quickly cut without causing significant fatigue. Can be achieved, work efficiency can be improved, and practical effects such as easy and inexpensive production can be achieved.

[0009]

【Example】

 Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. 1 to 3 show an embodiment of the pruning scissors according to the present invention. FIG. 1 is a front view showing the blade in a closed state, and FIG. 2 is a front view showing the blade in the most opened state. (A) is an end view taken along the line III-III in FIG. 2 and FIG. 3 (b) is an end view showing another embodiment corresponding to FIG. 3 (a).

Reference numerals 3 and 4 are a pair of scissors constituting members having a receiving blade 1 and a cutting blade 2 made of carbon tool steel or high-speed steel at the tips of the gripping portions 8 and 9, respectively. Are pivotally attached by a spindle 5 so that they can be opened and closed in a crossed manner. That is, the support shaft 5 is inserted into a through hole (not shown) provided on the cutting blade 2 side so that the support shaft 5 projecting from the one receiving blade 1 side is inserted, and the pair of scissors constituting members 3 and 4 are After being rotatably supported so that they can be opened and closed with each other, the nut 10 is attached by screwing the nut 10 into a screw threaded at the tip of the support shaft 5.

The receiving blade 1 and the cutting blade 2 are hardened by hard chrome plating to prevent rust and improve wear resistance. If necessary, the cutting blade 2 can be formed into a small back blade having a cutting edge portion cut into a triangular shape, as conventionally known, to improve the cutting action.

A spring 11 is provided between the two members 3 and 4, and is normally urged to open the two members 3 and 4 freely. Further, a pair of stopper members 12 and 13 which can be engaged with and disengaged from each other are attached to the tail ends of the grips 8 and 9, respectively, and when both members 3 and 4 are closed against the spring 11. By inserting the stopper member 12 bent in the ring shape into the stopper member 13 cut in the other notch shape, the scissors can be kept closed as shown in FIG. is there.

The receiving blade 1 and the cutting blade 2 each have a semicircular shape or a crescent shape in which the shape of the blade is curved in the same direction, and the cutting blade 2 is close to its base, that is, the support shaft 5. A notch 7 that controls the positioning of the object 6 to be cut is provided at a portion at a distance. The notch 7 is formed in the shape of a semi-circular arc that is recessed downward with a radius of curvature that can be accommodated as much as possible according to the diameter or shape of the object 6 to be cut, and the depth thereof is 6. It is set enough to control the position of

In this embodiment, the linear distance in the longitudinal direction from the base end to the tip of the receiving blade 1 is 50 mm, whereas the linear distance in the blade line direction of the notch 7 is about 16 mm. However, it goes without saying that the dimensions can be changed without changing the gist of the present invention. Further, the notch 7 has various shapes other than the above-mentioned semi-circular shape, and its cross section has a trapezoidal shape as shown in FIG. 3 (a) and also has a cross section as shown in FIG. 3 (b). It goes without saying that the cutting edge can be formed into a sharp shape.

[Brief description of drawings]

FIG. 1 is a front view showing the entire pruning scissors according to the present invention, showing a state in which a blade is closed.

FIG. 2 is a front view showing a state where the blade of FIG. 1 is most opened.

FIG. 3 is an enlarged end view (a) taken along the line III-III in FIG. 2 and an enlarged end view (b) of another embodiment corresponding to the enlarged end view (a). .

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Receiving blade 2 Cutting edge 3,4 Scissors constituent member 5 Spindle 6 Object to be cut 7 Notch 8,9 Gripping portion 10 Nut 11 Spring 12,13 Stopper member

Claims (1)

[Scope of utility model registration request] 1. A pair of scissors constituting members 3 and 4 each having a receiving blade 1 and a cutting blade 2 which are curved in the same direction are rotatably pivoted on a support shaft 5, and A pruning scissor characterized in that a notch 7 for controlling the positioning of the object 6 to be cut is provided at an appropriate position.