JP3275512B2 - Printed circuit boards and terminals - Google Patents

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 shows a sectional view of a conventional printed circuit board and terminals. 8, reference numeral 1 denotes a printed board, 2 denotes a copper foil provided on the printed board 1 and forms an electric circuit, 3 denotes 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.

The connection process of the printed circuit board 1 and the terminals 3 configured as described above will be described below.
The surface of the coil copper wire 5 is coated with a resin such as polyimide acetal in order to secure insulation. When connecting the coil copper wire 5 to the connection portion on the distal end side of the terminal 3 connected to the electric circuit of the printed circuit board 1, wind the coil copper wire 5 around the connection portion on the distal end side of the terminal 3, and wind the terminal 3. The coil copper wire 5 is immersed in a solder dip layer to remove the surface coating of the coil copper wire 5, and the terminals 3 and the coil copper wire 5 are soldered to each other.

As another connection method, after removing the surface coating of the portion of 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 distal end side of the terminal 3 to form a solder dip. By the processing, the coil copper wire 5 and the terminal 3 are soldered to each other. At this time, in order to remove the surface coating of the coil copper wire 5, usually, before winding the coil copper wire 5 around the terminal 3, a portion where the coil copper wire 5 is wound around the terminal 3 is subjected to solder dipping at a high temperature in advance. Remove the coating.

[0005]

As described above, in the above-described conventional configuration, when the terminal 3 and the wound coil copper wire 5 are immersed in the solder dip layer to remove the surface coating of the coil copper wire 5, a high temperature is required. Is required, the temperature of the printed circuit board 1 rises to a predetermined temperature or more, and peeling occurs between the printed circuit board 1 and the copper foil 2 to reduce 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 coiled copper wire 5 that has been solder-dipped is wound around the terminal 3, it is difficult to mechanize the winding operation, which requires manual operation. Man-hours were required. Further, since the coil copper wire 5 has been solder-dipped in advance, a difference in hardness occurs at the boundary between the solder-dipped portion and the non-soldered portion of the coil copper wire 5, so that the coil When the wire 5 is wound, there is a problem that the coil copper wire 5 is broken at a boundary portion where a difference in hardness is generated, and the wire is broken to lower reliability.

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

[0007]

In order to achieve this object, a printed circuit board and a terminal according to the present invention include a copper foil constituting an electric circuit, and a first terminal pin having a cylindrical shape connected to the copper foil. A second cylindrical portion that covers the first terminal pin and has a through hole that penetrates a distal end of the cylindrical portion.
And a projection provided on an inner periphery of the second terminal pin is engaged with a recess provided on the first terminal pin, and the first terminal pin and the second
And the terminal pins can slide with each other.

In addition, a first terminal pin having a cylindrical shape and a second terminal pin having a cylindrical portion covering the first terminal pin and having a through hole at a tip end of the cylindrical portion are provided. In addition, 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 relative to each other.

[0009]

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

[0010]

DETAILED 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 board and terminals for a deflection yoke according to an embodiment of the present invention. In FIG. 1, reference numeral 6 denotes a printed board for a deflection yoke, 7 denotes a copper foil provided on the printed board 6 and forms an electric circuit, and 8 denotes a first columnar member connected to the electric circuit of the copper foil 7. Terminal pins 9 are recesses provided on the outer periphery of the first terminal pins 8;
Reference numeral 10 denotes solder for electrically connecting the copper foil 7 and the first terminal pins 8, 11 denotes a second terminal pin formed of a cylindrical portion so as to cover the first terminal pins 8, 12 denotes a second terminal A projection 13 provided on the inner peripheral wall inside the pin 11 is a second terminal pin 1.
1 is a through-hole provided at the tip of the first terminal pin 14;
A projection 15 provided on the outer periphery of 1 is a coil copper wire at the end of a wire composed of a horizontal deflection coil or a vertical deflection coil, etc.
Reference numeral 6 denotes a projection 14 provided on the outer periphery of the second terminal pin 11.
It is a joint portion provided on the more distal end side to connect the coil copper wire 15.

The components of the printed circuit board 6 and the terminal for the deflection yoke thus configured will be described below. FIG. 2 is a front view of a first terminal pin of a terminal for a deflection yoke in one embodiment of the present invention. In FIG. 2, reference numeral 8 denotes a first terminal pin having a cylindrical shape, and 9 denotes a first terminal pin.
Are 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 one embodiment of the present invention. In FIG. 3, reference numeral 11 denotes a second terminal pin formed of a cylindrical portion, 12 denotes a protrusion provided on the inner peripheral wall inside the second terminal pin 11, and 13 denotes a tip provided on the tip of the second terminal pin 11. , A projection provided on the outer periphery of the second terminal pin 11, a joint 16 provided on the distal end side of the projection 14 on the outer periphery of the second terminal pin 11, and a second member 17. This is a slit provided on the projection 14 of the terminal pin 11.

FIG. 4 shows the first and second terminal pins of a deflection yoke terminal according to an embodiment of the present invention.
It is sectional drawing which shows the engagement of. As shown in FIG. 4, the first engagement is performed by a recess 9 provided on the outer periphery of the first terminal pin 8 and a projection 12 provided on the inner peripheral wall of the second terminal pin 11. . Through-hole 1 of second terminal pin 11
Reference numeral 3 denotes a portion for flowing the solder between the outer peripheral portion of the first terminal pin 8 and the inner peripheral wall of the second terminal pin 11. The distal end side of the projection 14 of the second terminal pin 11 is connected to the terminal joint 16.
It is.

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

When the solder is dipped, the insulating layer covering the surface of the coil copper wire 15 is melted and burned off at the temperature of the solder 18, and the solder between the joint 16 of the second terminal pin 11 and the coil copper wire 15 is removed. Connect at 18. At this time, the temperature of the solder 18 in the solder dip layer is high, and when the solder is dipped, the temperature of 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 pins 8, 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 dip operation of the printed board and the terminal 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 16 of the second terminal pin 11 and the coil copper wire 15 are connected by solder 18 is melted in a solder dip layer at a low temperature. And the tip of the second terminal pin 11 is brought into contact with the terminal pin receiver 20 provided in the solder dip layer, and the concave portion 9 provided in the first terminal pin 8 is used. The first engaged first terminal pin 8 is pushed in the direction of the arrow 21 by the protrusion 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 projection 14 of the second terminal pin 11 is opened (not shown), and the projection 14 of the second terminal pin 11 is moved to the outer periphery of the first terminal pin 8. By sliding easily, the outer periphery of the first terminal pin 8 and the inner peripheral wall of the second terminal pin 11 are connected by solder 19.

As described above, the first terminal connected to the coil copper wire 15 at the end of the wire composed of the horizontal deflection coil or the vertical deflection coil and the copper foil 7 provided on the printed circuit board 6 and constituting an electric circuit. When connecting to the pin 8, the insulating layer covering the surface of the coil copper wire 15 is melted and incinerated at the temperature of the solder 18 by a first solder dipping operation to remove the joint layer 16 of the second terminal pin 11. And the coil copper wire 15 are connected by a solder 18, and a second solder dipping operation is performed to electrically connect the inner peripheral wall of the second terminal pin 11 and the outer periphery of the first terminal pin 8 with solder 19. Therefore, 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 board 6 and the copper foil 7 can be improved.

In the first engagement between the first terminal pin 8 and the second terminal pin 11 of the terminal according to the embodiment of the present invention, a recess 9 is formed on the outer periphery of the first terminal pin 8. Although the projection 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 cross-sectional view showing the second engagement between the first terminal pin and the second terminal pin of the terminal for the deflection yoke in one embodiment of the present invention. As shown in the figure, a projection 22 is provided on the outer periphery of the first terminal pin 8, and a recess 23 is provided on an inner peripheral wall inside the second terminal pin 11. With this configuration, 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 1.

[0018]

As described above, the present invention relates to a copper foil constituting an electric circuit, a first terminal pin having a columnar shape connected to the copper foil, and a cylindrical portion covering the first terminal pin. A second terminal pin having a through-hole penetrating at the tip of the cylindrical portion, comprising: a recess provided on the first terminal pin; and a projection provided on the inner periphery of the second terminal pin. Since the first terminal pin and the second terminal pin can be slid with each other, the connection work between the terminal and the coil copper wire is facilitated, the temperature rise of the printed circuit board is reduced, and It is possible to realize a printed circuit board and a terminal with improved reliability by eliminating peeling.

[Brief description of the drawings]

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

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

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

FIG. 5 is a cross-sectional view showing a first solder dip operation of a printed board and a terminal for a deflection yoke according to an embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a second solder dip operation of a printed circuit board and a terminal for a deflection yoke in one embodiment of the present invention.

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

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

[Explanation of symbols]

 Reference Signs List 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 protrusion 13 through hole 15 coil copper wire 16 joint 17 slit 20 terminal Pin receiver 21 Arrow

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 9/09 H01J 29/76 H01R 4/02

Claims (5)

(57) [Claims] An electric circuit comprising a copper foil, a cylindrical first terminal pin connected to the copper foil, and a cylindrical portion covering the first terminal pin. A second terminal pin having a through-hole penetrating at the tip of the first terminal pin, and engaging a recess provided on the first terminal pin with a protrusion provided on an inner periphery of the second terminal pin. Along with
A printed circuit board, wherein the first terminal pin and the second terminal pin are slidable with each other. 2. A first terminal pin having a cylindrical shape, and a second terminal pin having a cylindrical portion covering the first terminal pin and having a through hole formed at a tip end of the cylindrical portion. A terminal configured to connect a copper wire to an outer periphery of the second terminal pin, and to allow the first terminal pin and the second terminal pin to slide with each other. 3. The terminal according to claim 2, wherein a concave portion is provided on an outer periphery of the first terminal pin and a protrusion is provided on an inner periphery of the second terminal pin. 4. The terminal according to claim 2, wherein a projection is provided on an outer periphery of the first terminal pin and a recess is provided on an inner periphery of the second terminal pin. 5. The terminal according to claim 2, wherein a projection is provided on a winding portion on an outer periphery of the second terminal pin.