JPH06215972A - Manufacture of conductor member - Google Patents

Abstract

PURPOSE:To provide a method for the manufacture of conductor members which improves the efficiency of material untilization and makes manufacturing possible at a low cost by low price press dies. CONSTITUTION:A wire 21 is wound around a stem 22, and the resultant material is pressed in a specified direction to form pressed sections 12' and 13'. The wire is cut at the center of both sides of the material, and the cut portions 14' and 14' are used for legs to manufacture a conductor member.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a conductor member such as an inductor or a lead wire of a high frequency circuit, and particularly to improve mass productivity and material use efficiency.

[0002]

2. Description of the Related Art Conventionally, an inductor member used in a high-frequency device such as a television tuner is punched out from a plate material which has been preliminarily pressed into a predetermined thickness, and is formed as a U-shaped inductor member 1 as shown in FIG. ing. The inductor member 1 thus formed has the legs 1a and 1b at both ends.
Mounting holes 2a and 2b formed on the printed circuit board 2
Then, the leg portions 1a and 1b are inserted and fixed by a fixing means such as soldering. At that time, the inductor member 1 is formed by utilizing the protrusions 3a and 3b formed above the leg portions 1a and 1b.
The mounting height of is regulated.

However, in the conventional inductor member 1 for punching a plate material, (1) the dimension A of the U-shaped corner portion becomes large, and the entire area becomes large for the length of the straight line. (2) The inner portion Is a waste material and the material usage efficiency is extremely low, (3) the press die is expensive, (4) there is a limit to the number that can be created by one punching, (5) when punching because of the protrusions 3a, 3b It is unavoidable that the price will become high due to factors such as the complicated die shape.

[0004]

As described above, since the conventional conductor member such as the inductor member is manufactured by punching the pressed plate material, the material usage rate is low, and the manufacturing equipment cost is also different depending on the press die or the like. There was a problem that it would be bulky and expensive.

It is an object of the present invention to eliminate the above problems, improve the material use efficiency, and provide a method for manufacturing a conductor member that can be manufactured at a low cost using an inexpensive press die.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a wire rod as a conductor member material is wound around a core rod and pressed from a predetermined direction to form a pressed portion, and the pressed portion is cut at both sides. It is a manufacturing method of a conductor member which uses a cut part as a leg.

[0007]

According to such a method, the conductor member uses all the wire rod wound around the core rod. Further, unlike the conventional method, the punching process of the plate material is not used, and the more the number of windings of the wire material wound around the core rod is increased, the more the number is created at one time.
Productivity becomes good. Further, it is possible to obtain a low-priced conductor component because the plate material need not be pressed.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the illustrated embodiments. FIG. 1 is a perspective view showing an embodiment of a conductor member according to the present invention. 2 and 3 are perspective views showing steps of manufacturing the embodiment of FIG.

As shown in FIG. 1, the conductor member 11 according to this embodiment has a U-shaped intermediate press portion 12 having a predetermined length.
And both side press parts 13 and 13 bent at right angles from both ends of the intermediate press part 12, and leg parts 14 and 14 extending from the both side press parts 13 and 13. Press section 12,
In 13, the press flat surface 12a corresponds to the thickness surface of the conventional member, and the thickness surface 12b corresponds to the press flat surface of the conventional member. That is, a flat member obtained by pressing a wire is bent at both sides to form a U shape.

The leg portions 14, 14 are portions that are not pressed,
The cross-sectional shape of the wire to be described later remains as it is.

The conductor member 11 as described above is shown in FIGS.
Create as follows. That is, as shown in FIG. 2, a wire rod 21 having a substantially circular cross section is spirally wound around a core rod 22 having a rectangular cross section by using a rotating means such as a lathe. In this case, the core rod 22 is a hard prismatic material, and the wire rod 21 is wound at a predetermined interval.

If the longitudinal facing surfaces 23 and 24 of the core rod 22 are upper and lower surfaces and the other facing surface is the facing side surfaces 25 and 26, first, the upper and lower surfaces 23 and 24 are evenly arranged in the directions (P1, P1). Pressing is applied with pressing force. At the same time, the direction P2 of the side faces 25 and 26
Also press. However, in the case of the side surfaces 25 and 26, the central lines O1 and O1 are excluded. As a result, as shown in FIG. 3, the wire rod 21 is crushed on the upper and lower surfaces 23, 24 to form a press portion 12 'corresponding to the intermediate press portion 12 of FIG.
Pressed portions 13 ′ corresponding to the pressed portions 13 on both sides are formed on the side surfaces 25 and 26, respectively.

Next, the conductor member supply body as shown in FIG. 3 is cut along the center lines O1 and O1. Center line O1, part of O1 1
No. 4'is not pressed, and the shape of the wire 21 remains. Therefore, by cutting this portion, the leg portion 14 that matches the component mounting hole formed in the printed board.
To form.

In this embodiment, the conductor member 11 as shown in FIG. 1 can be prepared as described above. The conductor member 11 thus formed is used, for example, as an inductor of a high frequency device. In this case, when the leg portions 14 and 14 are inserted into the mounting holes of the printed board, the both side press portions 13 and 13 regulate the insertion amount of the leg portions 14 and 14, and have the same function as the protrusions 3a and 3b of FIG. To fulfill.

The conductor member 11 is obtained by crushing the wire rod 11 of a predetermined length determined by the size of the core rod 22, and is slanted as in the case of punching a plate material to form a U-shape. There is no formation of a corner portion having a width and an unnecessarily large area. Moreover, the wire rod 21 is entirely used as the conductor member 11,
Does not produce a waste material. In addition, if the core rod 22 is lengthened and the number of turns is increased, a large number of inductors are produced at one time, the processing time is shorter than that of punching, and the conductor component is extremely efficient in material use and rich in mass productivity. Further, in the punching, the work piece requires a certain width, which limits the material saving, but in the case of the present embodiment, it is possible to save the material more than the case of the punching by reducing the diameter of the wire rod 21. Become.

Next, another embodiment will be described. FIG. 4 is a perspective view of a conductor member according to another embodiment of the present invention. The conductor member 31 shown in this figure is also U-shaped, and the intermediate portion 32,
It is composed of bent side portions 33 on both sides thereof and leg portions 34, 34 extending from the side portions 33. However, the side part 33 and the leg part 34
A press portion 35 having a flattened diameter by press working is formed therebetween.

FIG. 5 is a perspective view for explaining a method of manufacturing the conductor member 31 of FIG. FIG. 5 shows a wire rod 21 as shown in FIG.
The direction P2 of the side surfaces 25 and 26 with respect to the intermediate body just wound
, P2 is a perspective view showing a conductor member supply body in a state of being pressed from P2. That is, in this embodiment, a wire rod 21 having a circular cross section is shown in FIG.
It is the same until it is wound like, but in press working, the upper and lower sides of the center lines O1 and O1 are P2 and P2.
The upper and lower surfaces 23 and 24 are not pressed. Therefore, the wire rod 21 wound around the pressed side surfaces 25 and 26 has the pressing portions 35 and 35 shown in FIG. 4 above and below the center lines O1 and O1, respectively.
The press parts 35 ', 35' corresponding to the
The wire 21 wound around the lower surface 24 and the lower surface 24 retains its original shape. After the above press working, when cutting is performed at the center lines O1 and O1,
The conductor member 31 as shown in FIG. 4 is formed.

Also in the conductor member 31 of FIG. 4, the press portions 35, 35 on the leg portions 34, 34 regulate the insertion amount of the leg portion 34 and can be smoothly attached to the printed board. Moreover, since the entire wire rod 21 is used, the material use efficiency is high.

The conductor member of the present invention can be used as a jumper lead wire 11 'as shown in FIG. In FIG. 6, the jumper lead wire 11 ′ is wired on the resistor 27. This type of jumper wire usually has a large circular cross section and never had an area. However, the jumper lead 11 'shown in FIG. 6 has an area, and it is possible to form a jumper wire in a pattern portion requiring a large area such as a ground pattern without increasing the material.

[0020]

As described above, according to the present invention,
It is possible to provide a low-priced conductor component which has good material usage efficiency and is highly producible.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a conductor member according to the present invention.

FIG. 2 is a perspective view for explaining a manufacturing process of the conductor member of FIG.

FIG. 3 is a perspective view for explaining a manufacturing process of the conductor member of FIG.

FIG. 4 is a perspective view showing another embodiment of the present invention.

FIG. 5 is an explanatory view for explaining the manufacturing method of the embodiment of FIG.

FIG. 6 is a perspective view showing an example of a usage example of the present invention.

FIG. 7 is a perspective view showing a conventional conductor member.

[Explanation of symbols]

 11, 31 ... Conductor member 12, 13, 35 ... Pressed portion 14, 34 ... Leg portion 21 ... Wire rod 22 ... Core rod O1 ... Center line P1, P2 ... Pressing direction

Claims (1)

[Claims] 1. A wire rod is wound around a core rod made of a prismatic material to form a coil, and then a part of each of the facing surfaces of the wire rod is wound except for a part of each of the facing surfaces. Manufacture of a conductor member, characterized in that a pressed portion is formed by pressing the other whole portion, and a part of the wire material excluding the pressed portion is cut at the facing surface to form a leg portion. Method.