JP2003305285A - Scissors-form tool, and its production method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light scissors-form tool with high durability, and also its production method. <P>SOLUTION: A first cylindrical body 3 is arranged in a metallic mold for a first handle so as to perform penetration at the fulcrum position of the first handle 1 in a thickness direction. Meltage for molding is poured into the metallic mold for the first handle, and solidified, and then the first cylindrical body 3 is embedded so as to expose the both end surfaces. The molding meltage consists of melted aluminum alloy. Thus, the first handle 1 is integrally provided with the first cylindrical body 3. A second cylindrical body 4 is arranged in the metallic mold for a second handle so as to perform penetration at the fulcrum position of the second handle 2 in the thickness direction. The second handle 2 molded by the metallic mold for the second handle 2 makes a pair with the first handle 1 to constitute the scissors-form tool. Meltage for molding is poured into the metallic mold for the second handle, and solidified, and then the second cylindrical body 4 is embedded so as to expose the both end surfaces. Thus, the second handle 2 is integrally provided with the second cylindrical body 4. A shaft body 5 penetrates the first and second cylindrical bodies 3 and 4, and a washer 6, which are connected by calking one end of the shaft body 5 projected from the washer 6. A blade plate is fixed with two screws at the cutting parts of the first and the second handles 1 and 2. <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 scissors-type tool for performing work by opening and closing two handles such as scissors, pliers, knives, and a vise, and a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventional scissor-type tools such as scissors for cutting galvanized iron are constructed such that two handles made of iron or the like are connected at a fulcrum by a shaft, and the handles are opened and closed to perform cutting or the like. There is.

[0003]

However, since the conventional scissor-type tool is made of iron or the like, it is heavy and is not convenient to carry. In order to solve this problem, it is sufficient to manufacture the whole with a light material such as aluminum or plastic, but these materials are light, but their strength is weak, and the force is applied to the insertion hole of the shaft body as it is used, and the insertion hole is There is a problem that it gradually spreads and becomes unusable due to rattling.

The present invention has been made in view of such conventional problems, and an object thereof is to provide a scissor-type tool which is light and has high durability, and a manufacturing method thereof.

[0005]

In order to achieve the above object, a scissor-type tool according to the present invention comprises a first handle and a second handle which forms a pair of scissor-type tools with the first handle. A first cylinder that is integrally provided with the first handle and penetrates in the thickness direction at the fulcrum position of the first handle; and a second cylinder that penetrates in the thickness direction at the fulcrum position of the second handle. It is characterized by having a second cylindrical body integrally provided with the handle, and a shaft body penetrating the first cylindrical body and the second cylindrical body so as to be rotatably connected.

In the scissors-type tool according to the present invention, the first handle and the first cylinder are integrally provided, and the second handle and the second cylinder are integrally provided, so that the first handle and the first handle are provided. 2 When using a light but weak material for the handle,
If a material having high strength is used for the cylindrical body and the second cylindrical body, even if force is applied to the insertion hole of the shaft body, the strength of the first cylindrical body and the second cylindrical body is less likely to be affected by the insertion hole, so that the cylindrical body is loosely used. It can be suppressed that it cannot. Therefore, the durability can be improved even if the entire body is lightened.

In the scissor-type tool manufacturing method according to the present invention, the first cylinder is arranged in the first handle mold so as to penetrate in the thickness direction at the fulcrum position of the first handle. The melt for molding is poured into a mold to be solidified, and the first
A first handle manufacturing step in which both end surfaces of the tubular body are embedded and embedded, and a first handle and the first tubular body are integrally provided;
A second cylinder is arranged in the second handle mold so as to penetrate in the thickness direction at the fulcrum position of the second handle, and the molding melt is poured into the second handle mold to solidify. A second handle manufacturing step in which both ends of the second tubular body are exposed and embedded, and a second handle that makes a pair with the first handle and constitutes a scissor-type tool and the second tubular body are integrally provided; And a connecting step of connecting the first tubular body and the second tubular body by penetrating the shaft body and connecting them.

In the scissor-type tool manufacturing method according to the present invention,
Since the handle and the first cylinder and the second handle and the second cylinder are integrally manufactured by pouring the molding melt, a light material is used for the first handle and the second handle. The scissors-type tool manufactured by using the material having high strength for the two cylinders has the first cylinder when the force is applied to the insertion hole of the shaft even if the strength of the first handle and the second handle is weak. Also, the strength of the second cylinder is less likely to be affected by the insertion hole, and it is possible to prevent the rattling from becoming unusable. Therefore, the manufactured scissors-type tool can have improved durability even if the entire scissors-type tool is lightened. The molding melt that is poured into the first handle mold and the second handle mold is preferably aluminum or plastic.

The first cylinder and the second cylinder have a non-rotating body shape and both ends have a diameter larger than that of the intermediate portion.
The cylindrical body has a protrusion that protrudes from the surface of the first handle that faces the second handle, and the second handle has a recess at the position of the second cylinder on the surface that faces the first handle. However, it is preferable that the protrusion is inserted into the recess, and both ends of the shaft have a diameter larger than the insertion holes of the first cylinder and the second cylinder.

The scissors-type tool according to the present invention may be any tool that performs work by opening and closing two handles such as scissors for galvanized iron, scissors, pliers, a nail, a vise, and the like. The scissors-type tool may be for cutting, crimping, holding or any other purpose. When the scissors-type tool is made of scissors, the blade is preferably provided with a cleat at the gripping position on the first handle and the second handle.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show an embodiment of the present invention. As shown in FIG. 1 and FIG. 2, the scissors-type tool includes a first handle 1 and a second handle 2.
The first tubular body 3, the second tubular body 4, the shaft body 5, and the washer 6 constitute galvanized iron scissors. First handle 1
The second handle 2 has a shape that is bent in a gentle crank shape, and has cutting portions 1a and 2a on one end side and grip portions 1b and 2b on the other end side. The first handle 1 and the second handle 2 are made of a lightweight aluminum alloy. The first handle 1 and the second handle 2 may be plated with a hard material. Blade plates 7 and 8 are fixed to the cutting portions 1a and 2a of the first handle 1 and the second handle 2, respectively, by two screws 9. The blade plates 7 and 8 are made of stainless steel, and have blades formed on their edges. The second handle 2 forms a pair with the first handle 1 to form a scissor-type tool, and the blade plates 7 and 8 can cut galvanized iron or the like.

As shown in FIG. 3, the first cylindrical body 3 is integrally provided with the first handle 1 so as to penetrate in the thickness direction at the fulcrum position of the first handle 1. The second tubular body 4 is integrally provided with the second handle 2 while penetrating in the thickness direction at the fulcrum position of the second handle 2. First cylinder 3 and second cylinder 4
Has insertion holes 3a and 4a penetrating in the axial direction.
The first tubular body 3 and the second tubular body 4 have both ends 3b and 4b in a drum shape.
Is larger than the diameter of the intermediate portions 3c and 4c. As shown in FIG. 4, the first tubular body 3 and the second tubular body 4 have cutout surfaces 3d and 4d on the side surfaces thereof, and the first handle 1 or the second tubular body 4
It has a non-rotating body shape so as not to rotate with respect to the handle 2. The first tubular body 3 and the second tubular body 4 may be non-rotating shapes having V-shaped notches on the side surfaces.

As shown in FIG. 5, one end 3b of the first cylindrical body 3 is a protruding portion that protrudes from the surface of the first handle 1 facing the second handle 2. The protruding portion is in contact with the end surface 4e of the second tubular body 4. The shaft body 5 has a head portion 5b having a diameter larger than that of the shaft portion 5a, and rotatably connects the first cylinder body 3, the second cylinder body 4, and the washer 6 to each other. The shaft body 5 has a head portion 5b and an end portion 5c having a larger diameter than the insertion holes 3a, 4a of the first cylinder body 3, the second cylinder body 4 and the washer 6.

The scissors-type tool can be manufactured by the following steps. First, the first tubular body 3 is arranged in the first handle mold so as to penetrate in the thickness direction at the fulcrum position of the first handle 1. Next, the molding melt is poured into the first handle mold to be solidified and the first cylinder 3 is embedded with both end surfaces exposed. The molding melt consists of molten aluminum alloy. Thereby, the 1st handle 1 and the 1st cylinder 3 are integrally provided (1st handle manufacturing process).

Similarly, the second cylindrical body 4 is arranged in the second handle mold so as to penetrate in the thickness direction at the fulcrum position of the second handle 2. The second handle 2 formed by the second handle mold is paired with the first handle 1 to form a scissor-type tool. The molding melt is poured into the second handle mold to be solidified, and the second cylinder 4 is embedded with both end surfaces exposed. Thereby, the second handle 2 and the second
The tubular body 4 is integrally provided (second handle manufacturing step). In this way, the first handle 1 and the first cylinder 3 and the second handle 2 and the second cylinder 4 are integrally manufactured by pouring the molding melt.

The shaft 5 is passed through the first cylinder 3, the second cylinder 4, and the washer 6, and the end 5c of the shaft 5 protruding from the washer 6 is caulked to connect them (connecting step). The blade plates 7 and 8 are fixed to the cut portions 1a and 2a of the first handle 1 and the second handle 2 with two screws 9. This allows
It is possible to manufacture a scissors-type tool capable of cutting the galvanized iron or the like with the blades of the blade plates 7 and 8 by gripping and opening and closing the first handle 1 and the second handle 2.

The scissors-type tool includes a first handle 1 and a first cylindrical body 3.
Are integrally provided, and the second handle 2 and the second cylindrical body 4 are integrally provided, so that the first handle 1 and the second handle 4
When a light but weak material such as an aluminum alloy is used for the handle 2 and a strong material such as iron is used for the first cylinder 3 and the second cylinder 4, the insertion hole 3 of the shaft body 5 is used.
Even if force is applied to a and 4a, the first cylinder 3 and the second cylinder 4
With this strength, the insertion holes 3a and 4a are less likely to be affected, and it is possible to prevent rattling and unusability. Therefore, the durability can be improved even if the entire body is lightened.

[0018]

According to the present invention, it is possible to provide a scissor type tool which is light and has high durability and a method for manufacturing the same.

[Brief description of drawings]

FIG. 1 is a front view of a scissors-type tool according to an embodiment of the present invention.

FIG. 2 is a right side view of the scissors-type tool shown in FIG.

FIG. 3 is an exploded side view of a connection portion of the scissors-type tool shown in FIG.

FIG. 4 is an end view of a first cylinder and a second cylinder of the scissors-type tool shown in FIG.

5 is a cross-sectional view showing a connection point of the scissors-type tool shown in FIG.

[Explanation of symbols]

1 first handle 2 second handle 3 First cylinder 4 second cylinder 5 axis 6 washers 7 blade plate

Claims (2)

[Claims] 1. A first handle, and a second handle which is paired with the first handle to form a scissor-type tool.
A handle, a first tubular body integrally formed with the first handle at a fulcrum position of the first handle and penetrating in the thickness direction, and a first cylinder penetrating in the thickness direction at a fulcrum position of the second handle, A scissor-shaped tool comprising: a second tubular body integrally provided with a second handle; and a shaft body that rotatably connects the first tubular body and the second tubular body. . 2. A first cylindrical body is arranged in the mold for the first handle so as to penetrate in the thickness direction at a fulcrum position of the first handle,
A molding melt is poured into the mold for the first handle to be solidified, the both ends of the first cylinder are exposed and embedded, and the first handle and the first cylinder are integrally provided.
In the handle manufacturing process, the second cylinder is arranged in the second handle mold so as to penetrate in the thickness direction at the fulcrum position of the second handle, and the molding melt is placed in the second handle mold. A second handle integrally provided with the second handle and the second handle forming a pair of the first handle and forming a scissor-type tool by pouring the liquid to solidify the second tubular body with both end surfaces exposed. A scissor-type tool manufacturing method comprising: a handle manufacturing step; and a connecting step of connecting a shaft body through the first cylinder body and the second cylinder body to connect them.