JP3026954U - Pruning shears - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide mowing scissors having a power-assisting mechanism that is easy to use. [Structure] Fixed blade 1 and movable blade 2 connected to a fixed handle
And 6 are pivoted, and the tip of the pivoting portion of the fixed blade is L-shaped,
The tip of the movable handle 4 is pivotally connected to the bent portion 7 to make the movable blade correspond to the shape of the L-shaped blade of the fixed blade, and the operating portion of the movable blade and the movable handle 4 are linked. And the distance L2 between the handle pivot connecting portion 7 and the handle link rod connecting portion 9 is made shorter than the distance L1 between the pivot connecting portion 6 and the blade link connecting rod connecting portion 7.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to pruning scissors used for cutting branches of fruit trees and garden trees.

[0002]

[Prior art]

 The trimming scissors and pruning scissors are connected to a pair of pivotally connected blades, and the blades are operated by opening and closing the handles to perform pruning of branches. However, with the structure in which the blade and the handle are directly connected, since the opening and closing angle of the handle and the opening and closing angle of the blade are the same, it is difficult to cut a rigid branch unless the handle is extremely long. Therefore, a pruning scissor equipped with a booster mechanism having an opening / closing angle smaller than the opening / closing angle of the handle has been proposed (Jpn. No. 3-10827).

The cutting scissors are one blade body (movable blade body: which performs relative movement) pivotally attached to the openable and closable shaft, but in the present invention, for convenience, the side that is integrally connected to the handle. Hereinafter, the blade body is referred to as a “fixed blade body”, and the other is referred to as a “movable blade body. The same applies to the handle). The shaft body is projected to the base end portion of the movable blade body without directly connecting the handle to the handle. It is provided by forming a long hole in the movable handle pivotally connected to the tip of the fixed blade body and mounting the shaft body in the long hole. The open / close angle of the blade and the open / close angle of the handle are determined according to the ratio of the distance between the blade pivot shaft and the shaft, making it easier to cut a rigid branch.

[0004]

[Problems to be solved by the device]

 The above-mentioned hard cutting shears for cutting branches have a strong shearing force compared to the conventional simple cross-shaped cutting shears because the opening / closing angle of the blade is small even if the opening / closing angle of the handle is increased. Can be given. However, the connection of the movable blade and the movable handle is a combination of the long hole and the shaft. That is, the opening / closing of the blade is not proportional to the opening / closing of the handle, and the opening / closing operation of the blade with the handle expanded is a slight operation, which is not necessarily excellent in operability. In addition, since the shaft moves in the long hole during pruning work, if any obstacles fit into the long hole, it will hinder the pruning work. In addition, during the pruning work, there are many branch cuts that become obstacles. Therefore, the present invention proposes scissors with a booster mechanism that does not employ a combination of a long hole and a shaft.

[0005]

[Means for Solving the Problems]

 The cutting scissors according to the present invention are pivotally connected to each other in a freely openable and closable manner, and a blade is formed at the tip of the pivotal portion to form a blade portion, and the base of the pivotal portion serves as an operating portion. And a movable blade) and a pair of handles (a fixed handle and a movable handle) for operating the blade, and the fixed blade has its base portion integrally connected to the fixed handle, and the tip of the pivot portion is L-shaped, the tip of the other movable handle is pivotally connected to the bent portion (handle pivotal connection), and the movable blade is bulged to correspond to the L-shaped blade of the fixed blade. Then, the operating part of the movable blade and the movable handle are connected by a link rod, and the distance between the pivot portion and the blade link rod pivot joint is determined by the distance between the handle pivot portion and the handle link rod pivot joint portion. Is short. Further, in particular, in the above-mentioned trimming scissors, the movable handle is arranged and pivotally connected to the movable blade side, and the link rod is arranged and flush with the fixed blade body. It is a thing.

[0006] When the handles (the movable handle and the fixed handle make relative movements, which are described as the movable handle and the fixed handle for convenience) are opened and closed, the handle is pivoted around the handle. With this, the link rod operates, and the movable blade body rotates about the pivot shaft to perform a shearing action with the fixed blade body. Especially, since the distance between the handle pivot and the handle link rod pivot is shorter than the distance between the pivot and the blade link rod pivot joint, the movement angle of the movable blade is smaller than the movement angle of the movable handle. Since, becomes smaller, a strong shearing force can be obtained. Further, if the link rod is provided on the fixed blade side, the side surface of the fixed blade collides with the link rod and the maximum opening and closing of the handle is restricted.

[0007]

【Example】

 Next, an embodiment of the present invention will be described. The cutting scissors shown in the embodiment are composed of a fixed blade body 1, a movable blade body 2, a fixed handle 3, a movable handle 4, and a link rod 5. The fixed blade body 1 and the movable blade body 2 are pivotally connected (pivotally connected part 6) so as to be openable and closable, and a blade is formed at the tip of the pivotal part 6 to form a blade part, and the base of the pivoted part is operated. The fixed blade 1 has its base (operating portion) 11 integrally connected to the tip of the fixed handle 2, and the tip of the pivotal portion 6 is L-shaped so that the movable handle 4 can be bent. The tip portion of the handle is pivotally connected (handle grip pivot portion 7), and the tip of the handle pivot joint portion 7 is a blade portion 12.

The movable blade body 2 is a blade portion 22 having a bulging shape corresponding to the shape of the L-shaped blade portion 12 of the fixed blade body 1, and the base end of the operating portion 21 is located on the fixed blade body 1 side. One end of the overlapped link rods 5 is pivotally connected (blade body link rod pivotal connection portion 8). The other end of the link rod 5 is pivotally connected to the movable handle 4 (grip link rod pivoting portion 9), and in particular from the distance L1 between the pivoting portion 6 and the blade link rod pivoting portion 8. The distance L2 between the handle pivot connecting portion 7 and the handle link rod connecting portion 9 is short.

When the fixed handle 3 and the movable handle 4 are opened and closed, the movable handle 4 is rotated around the handle pivot portion 7, and at the same time, the link rod 5 is operated. When the link rod 5 is operated, the movable blade body 2 rotates about the pivot shaft 6 to perform a shearing action with the fixed blade body 1. During this shearing action, since the distance between the handle pivot 7 and the handle link pivot 9 is shorter than the distance between the pivot 6 and the blade link rod pivot 3, it is possible to move from the movable handle operating angle. The operating angle of the blade is reduced, and a strong shearing force can be obtained. Moreover, the above-mentioned boosting ratio is constant at any opening and closing angle, and is comfortable to use, and at the maximum opening, the link rod 5 and the fixed blade body 1 collide with each other as shown in FIG. Since the opening of No. 4 is prevented, the link mechanism (boosting mechanism) can be used without being damaged. Furthermore, since the connection of each part is a pivotal structure, there is no risk of intervention of obstacles.

[0010]

[Effect of device]

 As described above, the present invention includes a pair of pivotally connected blades (a fixed blade and a movable blade) and a pair of handles (a fixed handle and a movable handle) for operating the blades. It is connected integrally with the fixed handle, the tip of the pivoting part is L-shaped, and the tip of the movable handle is pivotally connected to the bent part so that the movable blade can correspond to the L-shaped blade of the fixed blade. , The movable blade's operating part and the movable handle are connected by a link rod, and the distance between the handle pivot and the handle link rod pivot is determined from the distance between the pivot and the blade link rod pivot. It is short and does not adopt the combination of long hole and shaft like the conventional cutting scissors equipped with a boosting mechanism to cut a rigid branch, so that the boosting ratio is constant and the occurrence of obstacles during use is prevented. However, it provides easy-to-use mowing scissors.

[Brief description of drawings]

FIG. 1 is an overall view showing an embodiment of the present invention.

FIG. 2 is an enlarged view of the relevant part (blade body closed state).

FIG. 3 is an enlarged view of the relevant part (a state where the blade body is open in the middle).

FIG. 4 is an enlarged view of the relevant part (fully opened blade).

[Explanation of symbols]

 1 Fixed Blade 2 Movable Blade 3 Fixed Grip 4 Movable Grip 5 Pivot Connection 6 Grip Pivot Connection 7 Blade Link Link Pivot Connection 8 Grip Link Pivot Connection

Claims (2)

[Scope of utility model registration request] 1. A pair of a fixed blade body and a movable blade body, which are rotatably and pivotally connected to each other to form a blade at a tip of the pivotal portion to form a blade portion, and a base of the pivotal portion is an operating portion. It is composed of a blade body and a pair of handles consisting of a fixed handle and a movable handle for operating the blade body. The fixed blade body has its base portion integrally connected, and the tip of the pivot portion is L-shaped. The distal end of the movable handle is pivotally connected to the bent portion, and the movable blade body is bulged to correspond to the shape of the L-shaped blade portion of the fixed blade body.
The tip of the movable handle should be connected by a link rod, and the distance between the pivot point of the handle and the pivot point of the handle should be shorter than the distance between the pivot point and the blade link rod. Scissors characterized by. 2. The cutting scissors according to claim 1, wherein the movable handle is arranged on the side of the movable blade and is pivotally connected to the link rod,
Mowing scissors characterized in that they are arranged on the same side as the fixed blade body and are pivotally connected.