JPH07235340A - Printed circuit board and terminals - Google Patents

Abstract

(57) [Abstract] [Purpose] An object of the present invention is to provide a printed circuit board and a terminal in which peeling of a copper foil is eliminated and a connection between a terminal pin and a copper wire is facilitated to improve reliability. [Structure] 6 is a printed circuit board, 7 is a copper foil provided on the printed circuit board 6 to form an electric circuit, 8 is a cylindrical first terminal pin connected to the electric circuit of the copper foil 7, and 9 is a A recess 10 provided on the outer periphery of the first terminal pin 8 is a solder for electrically connecting the copper foil 7 and the first terminal pin 8 to each other.
1 is a second tube-shaped part that covers the first terminal pin 8
Terminal pin, 12 is a protrusion provided on the inner wall of the second terminal pin 11, 13 is a through hole provided at the tip of the second terminal pin 11, and 14 is the outer periphery of the second terminal pin 11. Is a coil copper wire at the end of the wire composed of a horizontal deflection coil or a vertical deflection coil, and 16 is provided on the tip side of the projection 14 provided on the outer periphery of the second terminal pin 11. It is a joint.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printed circuit board and terminals.

[0002]

2. Description of the Related Art A conventional printed circuit board and terminals will be described below. FIG. 8 is a sectional view of a conventional printed circuit board and terminals. In FIG. 8, 1 is a printed circuit board, 2 is a copper foil provided on the printed circuit board 1 and constitutes an electric circuit, 3 is a terminal connected to the electric circuit of the copper foil 2, 4
Is a solder for electrically connecting the copper foil 2 and the terminal 3 and 5 is a coil copper wire at the end of the wire.

With respect to the printed circuit board 1 and the terminals 3 thus constructed, the connection process will be described below.
The surface of the coil copper wire 5 is covered with a resin such as polyimide acetal in order to ensure insulation. When connecting the coil copper wire 5 to the connection portion on the tip side of the terminal 3 connected to the electric circuit of the printed circuit board 1, the coil copper wire 5 is wound around the connection portion on the tip side of the terminal 3 and wound around the terminal 3. The coil copper wire 5 and the coil copper wire 5 are dipped in the solder dip layer to remove the surface coating of the coil copper wire 5, and the terminal 3 and the coil copper wire 5 are soldered to each other.

As another connection method, after removing the surface coating on the coil copper wire 5 to be wound around the terminal 3 in advance, the coil copper wire 5 is wound around the connection portion on the tip side of the terminal 3 and solder dipping is performed. The coil copper wire 5 and the terminal 3 are soldered to each other by the processing. At that time, in order to remove the surface coating of the coil copper wire 5, normally, before winding the coil copper wire 5 around the terminal 3, the winding portion of the coil copper wire 5 around the terminal 3 is soldered at a high temperature in advance by dipping the surface. Remove coating.

[0005]

As described above, in the above conventional structure, when the terminal 3 and the coiled copper wire 5 wound around are dipped in the solder dip layer to remove the surface coating of the coiled copper wire 5, a high temperature is applied. The solder dipping process is required, and the temperature of the printed circuit board 1 rises above a predetermined temperature accordingly, and peeling occurs between the printed circuit board 1 and the copper foil 2 to lower the reliability. In addition, when the coil copper wire 5 is soldered at a high temperature in advance and the surface coating is removed and then the soldered coil copper wire 5 is wound around the terminal 3, it is difficult to mechanize the winding work, which is a manual work. It took man hours. Further, since the coil copper wire 5 is solder-dipped in advance, there is a difference in hardness between the solder-dipped portion of the coil copper wire 5 and the non-solder-dipped portion thereof. When the wire 5 is wound, there is a problem that the coil copper wire 5 is broken at a boundary portion where a hardness difference is generated, and the wire is broken to reduce reliability.

The present invention solves the above-mentioned conventional problems, and provides a printed circuit board and a terminal in which peeling of a copper foil is eliminated and a connection between a terminal and a copper wire is facilitated to improve reliability. The purpose is to

[0007]

In order to achieve this object, a printed circuit board and a terminal of the present invention include a copper foil forming an electric circuit, and a cylindrical first terminal pin connected to the copper foil. A second portion having a cylindrical portion that covers the first terminal pin, the second portion having a through hole that penetrates the tip of the cylindrical portion.
And a protrusion provided on the inner circumference of the second terminal pin are engaged with the first terminal pin and the second terminal pin.
It has a structure that allows the terminal pins of and to be slidable with respect to each other.

Further, there are provided a first terminal pin having a cylindrical shape and a second terminal pin having a tubular portion covering the first terminal pin and having a through hole penetrating the tip of the tubular portion. A copper wire can be connected to the outer periphery of the second terminal pin, and the first terminal pin and the second terminal pin can slide with respect to each other.

[0009]

With this configuration, the work of connecting the terminal and the copper wire can be facilitated, the temperature rise of the printed circuit board can be reduced, the peeling of the copper foil can be eliminated, and the reliability can be improved.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A printed circuit board and terminals for a deflection yoke will be described below as an embodiment of the present invention with reference to the drawings. FIG. 1 is a sectional view of a printed circuit board and a terminal for a deflection yoke according to an embodiment of the present invention. In FIG. 1, 6 is a printed circuit board for a deflection yoke, 7 is a copper foil provided on the printed circuit board 6 to form an electric circuit, and 8 is a first columnar column connected to the electric circuit of the copper foil 7. Terminal pin, 9 is a recess provided on the outer periphery of the first terminal pin 8,
Reference numeral 10 is a solder that electrically connects the copper foil 7 and the first terminal pin 8, 11 is a second terminal pin formed of a tubular portion so as to cover the first terminal pin 8, and 12 is a second terminal. The protrusion provided on the inner peripheral wall inside the pin 11, 13 is the second terminal pin 1
1 is a through hole provided at the tip of the first terminal pin 14
1 is a protrusion provided on the outer periphery of the wire, 15 is a coil copper wire at the end of the wire composed of a horizontal deflection coil or a vertical deflection coil, etc.
6 is a protrusion 14 provided on the outer periphery of the second terminal pin 11.
It is a joining portion which is provided on the tip side and which connects the coil copper wire 15.

The individual components of the printed circuit board 6 and terminals for the deflection yoke constructed as above will be described below. FIG. 2 is a front view of the first terminal pin of the terminal for the deflection yoke in the embodiment of the present invention. In FIG. 2, 8 is a cylindrical first terminal pin, and 9 is a first terminal pin.
It is a recessed portion provided on the outer periphery of the terminal pin 8. FIG. 3 is a sectional view of a second terminal pin of a terminal for a deflection yoke according to an embodiment of the present invention. In FIG. 3, 11 is a second terminal pin formed of a tubular portion, 12 is a protrusion provided on the inner peripheral wall inside the second terminal pin 11, and 13 is provided at the tip of the second terminal pin 11. Through hole, 14 is a protrusion provided on the outer periphery of the second terminal pin 11, 16 is a joint provided on the tip side of the protrusion 14 on the outer periphery of the second terminal pin 11, and 17 is a second portion. It is a slit provided in the protrusion 14 of the terminal pin 11.

FIG. 4 shows a first terminal pin and a second terminal pin of a deflection yoke terminal according to an embodiment of the present invention.
It is a sectional view showing engagement of. As shown in FIG. 4, the first engagement is made by the recessed portion 9 provided on the outer periphery of the first terminal pin 8 and the projection 12 provided on the inner peripheral wall of the second terminal pin 11. . Through hole 1 of second terminal pin 11
3 is for injecting solder between the outer peripheral portion of the first terminal pin 8 and the inner peripheral wall of the second terminal pin 11. The tip end side of the second terminal pin 11 with respect to the protruding portion 14 is the joint portion 16 of the terminal.
Is.

The connection formation of the printed circuit board 6 and the terminals for the deflection yoke having the above structure will be described below. FIG. 5 is a cross-sectional view showing a first solder dipping operation for a printed circuit board and terminals for a deflection yoke in one embodiment of the present invention. As shown in FIG. 5, first, the first terminal pins 8 are connected by solder 10 to the copper foil 7 provided on the printed circuit board 6 and forming the electric circuit.
The first engagement is made between the recessed portion 9 provided on the outer periphery of the terminal pin 8 and the protrusion 12 provided on the inner peripheral wall of the second terminal pin 11. A coil copper wire 15 composed of a horizontal deflection coil, a vertical deflection coil, or the like is wound around a joint 16 on the tip side of the protrusion 14 on the outer periphery of the wire 11. In such a state, the protrusions 14 of the second terminal pins 11 are dipped in the liquid phase solder 18 dissolved in the solder dip layer to perform the solder dip.

When the solder is dipped, the insulating layer covering the surface of the coil copper wire 15 is melted and incinerated at the temperature of the solder 18, and the joint portion 16 of the second terminal pin 11 and the coil copper wire 15 are soldered. Connect at 18. At that time, the solder 18 in the solder dip layer has a high temperature, and when the solder dip is performed, the second terminal pin 11 rises to a high temperature. However,
The influence of the temperature on the printed circuit board 6 depends on the second terminal pin 11
Is connected to the printed circuit board 6 via the first terminal pin 8, so that the heat conduction to the printed circuit board 6 is low and the temperature rise of the printed circuit board 6 is small.

Next, FIG. 6 is a sectional view showing a second solder dipping operation for the printed circuit board and terminals for the deflection yoke in one embodiment of the present invention. As shown in FIG. 6, a liquid phase in which the second terminal pin 11 in which the joint portion 16 of the second terminal pin 11 and the coil copper wire 15 are connected by the solder 18 is melted in the solder dip layer at a low temperature. Of the second terminal pin 11 is brought into contact with the terminal pin receiver 20 provided in the solder dip layer, and at the recess 9 provided in the first terminal pin 8. The first engaged first terminal pin 8 is pushed in the direction of arrow 21 by the projection 12 provided on the inner peripheral wall of the second terminal pin 11. that time,
When the first terminal pin 8 is pushed in, the slit 17 of the projecting portion 14 of the second terminal pin 11 is opened (not shown), and the projecting portion 14 of the second terminal pin 11 is attached to the outer periphery of the first terminal pin 8. It slides easily to connect the outer circumference of the first terminal pin 8 and the inner circumference wall of the second terminal pin 11 with the solder 19.

Thus, the coil copper wire 15 at the end of the wire consisting of the horizontal deflection coil or the vertical deflection coil or the like, and the first terminal connected to the copper foil 7 which is provided on the printed board 6 and constitutes an electric circuit. When connecting to the pin 8, the insulating layer that covers the surface of the coil copper wire 15 by the first solder dipping work is melted and burned off at the temperature of the solder 18, and the joint portion 16 of the second terminal pin 11 is removed. The coil copper wire 15 and the coil copper wire 15 are connected to each other with solder 18, and the second solder dip work electrically connects the inner peripheral wall of the second terminal pin 11 and the outer periphery of the first terminal pin 8 to the solder 19. The connection work is facilitated, the disconnection of the coil copper wire 15 is eliminated, and the reliability such as the adhesive force between the printed circuit board 6 and the copper foil 7 can be improved.

In the first engagement of the first terminal pin 8 and the second terminal pin 11 of the terminal in the embodiment of the present invention, the recess 9 and the first terminal pin 8 are formed on the outer periphery of the first terminal pin 8. Although the projecting portion 12 is provided on the inner peripheral wall of the second terminal pin 11, it may be changed as shown in FIG. FIG. 7 is a sectional view showing the second engagement between the first terminal pin and the second terminal pin of the terminal for the deflection yoke in the embodiment of the present invention. As shown in the figure, a protrusion 22 is provided on the outer periphery of the first terminal pin 8 and a recess 23 is provided on the inner peripheral wall inside the second terminal pin 11. According to this structure, the protrusion 22 provided on the outer periphery of the first terminal pin 8 and the second terminal pin 1
The second engagement can be performed by the recessed portion 23 provided on the inner peripheral wall of 1.

[0018]

INDUSTRIAL APPLICABILITY As described above, according to the present invention, a copper foil forming an electric circuit, a cylindrical first terminal pin connected to the copper foil, and a tubular portion covering the first terminal pin are provided. And a second terminal pin having a through hole penetrating the tip of the tubular portion, the recessed portion provided on the first terminal pin and the protrusion provided on the inner circumference of the second terminal pin. Since the first terminal pin and the second terminal pin can be slid with respect to each other while being engaged, the connection work between the terminal and the coil copper wire is facilitated, and the temperature rise of the printed circuit board is reduced to reduce the copper foil. It is possible to realize a printed circuit board and terminals with improved reliability by eliminating peeling.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a printed circuit board and a terminal for a deflection yoke according to an embodiment of the present invention.

FIG. 2 is a sectional view of a first terminal pin of a deflection yoke terminal according to an embodiment of the present invention.

FIG. 3 is a sectional view of a second terminal pin of a terminal for a deflection yoke according to an embodiment of the present invention.

FIG. 4 is a cross-sectional view showing a first engagement between a first terminal pin and a second terminal pin of a deflection yoke terminal according to an embodiment of the present invention.

FIG. 5 is a cross-sectional view showing a first solder dipping operation for a printed circuit board and a terminal for a deflection yoke in one embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a second solder dipping operation for a printed circuit board and a terminal for a deflection yoke according to an embodiment of the present invention.

FIG. 7 is a sectional view showing a second engagement between the first terminal pin and the second terminal pin of the terminal for the deflection yoke in the embodiment of the present invention.

FIG. 8 is a sectional view of a conventional printed circuit board and terminals.

[Explanation of symbols]

 6 Printed Circuit Board 7 Copper Foil 8 First Terminal Pin 9,23 Recessed Part 10, 18, 19 Solder 11 Second Terminal Pin 12, 14, 22 Projection 13 Through Hole 15 Coil Copper Wire 16 Joint 17 Slit 20 Terminal Pin receiving 21 arrow

Claims (5)

[Claims] 1. A tubular portion comprising a copper foil forming an electric circuit, a cylindrical first terminal pin connected to the copper foil, and a tubular portion for covering the first terminal pin. A second terminal pin having a through-hole penetrating the tip of the first terminal pin, and the recess provided in the first terminal pin and the protrusion provided on the inner circumference of the second terminal pin are engaged with each other. With
A printed circuit board, wherein the first terminal pin and the second terminal pin are slidable with respect to each other. 2. A first terminal pin having a cylindrical shape and a second terminal pin having a cylindrical portion that covers the first terminal pin and having a through hole penetrating the tip of the cylindrical portion are provided. A terminal that is configured such that a copper wire can be connected to the outer periphery of the second terminal pin, and that the first terminal pin and the second terminal pin can slide with respect to each other. 3. The terminal according to claim 2, wherein a recess is provided on the outer circumference of the first terminal pin and a protrusion is provided on the inner circumference of the second terminal pin. 4. The terminal according to claim 2, wherein a projection is provided on the outer circumference of the first terminal pin and a recess is provided on the inner circumference of the second terminal pin. 5. The terminal according to claim 2, wherein a protrusion is provided on the winding portion on the outer periphery of the second terminal pin.