JPH069058U - Solder connection terminal - Google Patents

Abstract

(57) [Abstract] [Purpose] When soldering a rod-shaped conductor such as an electric wire to a solder connection terminal, the solder connection portion is strong, and the connection reliability between the rod-shaped conductor and the solder connection terminal can be improved. [Structure] A terminal portion 11 for electrical connection is provided on one side, and a conductor connecting portion 12 is formed on the other side. The conductor connecting portion 12 is provided with a tapered cylindrical portion 12t, and the tapered portion is provided. The ring 20 made of solder is fitted and held on the cylindrical portion 12t.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a solder connecting terminal used for a connector, a printed circuit board or the like and connected to a rod-shaped conductor such as an electric wire by soldering.

[0002]

[Prior art]

 As a conventional solder connecting terminal of this type, for example, one shown in FIG. 5 is known. That is, 1 is a connector housing, which has a plate-like terminal 2 exposed at one end thereof. Reference numeral 3 is a ribbon electric wire having a plurality of electric wires, and a rod-shaped conductor 4 such as an electric wire projects from one end of the ribbon electric wire. Then, as shown in FIG. 6, the rod-shaped conductor 4 is placed on the plate-shaped terminal 2, and these are brazed with solder 5 to fix the rod-shaped conductor 4 to the plate-shaped terminal 2.

[0003]

[Problems to be solved by the device]

 However, when soldering, it is difficult to align the rod-shaped conductor 4 with the plate-shaped terminal 2 and temporarily fix it, and after the completion of soldering, if external stress acts on the soldered connection part, the soldered connection part Since there is a tendency for cracks to occur, there is a problem that the connection reliability between the plate-shaped terminal 2 and the rod-shaped conductor 4 is reduced.

The present invention has been made in view of the above points. When soldering a rod-shaped conductor to a terminal, the rod-shaped conductor can be easily aligned and temporarily fixed to the terminal, and the solder connection portion is firmly fixed. The purpose is to provide a solder connection terminal with high connection reliability.

[0005]

[Means for Solving the Problems]

 In order to achieve the above object, the present invention provides a solder connecting terminal having a terminal portion for electrical connection on one side and a conductor connecting portion on the other side, wherein the conductor connecting portion has a tapered cylindrical shape. And a solder ring is fitted and held in the tapered tubular portion, and a rod-shaped conductor is inserted into the tapered tubular portion, and then the solder ring is heated and melted to form the rod-shaped conductor. It is characterized in that it is soldered to the conductor connecting portion.

[0006]

[Action]

 Since the tubular portion of the conductor connecting portion has a tapered shape with a wide root and a narrow tip, the rod-shaped conductor can be easily inserted and temporarily fixed in the tubular portion. Then, when the solder ring is heated and melted in this temporarily fixed state, the solder flows through the tapered wall of the tubular portion, and the rod-shaped conductor can be reliably soldered and fixed to the tubular portion.

[0007]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of a solder connecting terminal according to the present invention. In the figure, 10 is a plate-shaped terminal member mounted on a supporting member P such as a printed circuit board having electronic parts (not shown) such as a capacitor and a resistor, and is made of soft copper or the like. This plate-shaped terminal member 10 is bent at one side thereof and has a terminal portion 11 for electrical connection fixed to the support member P, and a U-shaped cross section formed by bending the other side of the terminal portion 11. And the conductor connecting portion 12 of

In the conductor connecting portion 12, a terminal insertion hole 12h having a diameter slightly larger than that of a rod-shaped conductor W such as an electric wire is provided in one standing wall 12a on the terminal portion 11 side, and the other standing wall 12b facing the standing wall 12a. A tapered cylindrical portion 12t that penetrates through the standing wall 12b and extends toward the terminal insertion hole 12h is provided on the. The diameter of the tip of the tubular portion 12t is formed to be substantially equal to the diameter of the rod-shaped conductor W, and a plurality of slits S are provided on the peripheral wall of the tubular portion 12t to divide the tubular portion 12t. .

Reference numeral 20 is a ring made of solder, which is fitted in the cylindrical portion 12t and is held inside the conductor connecting portion 12 having a U-shaped cross section.

In such a configuration, when the rod-shaped conductor W is inserted into the tubular portion 12t of the conductor connecting portion 12 and the conductor insertion hole 12h, the rod-shaped conductor W can be temporarily fixed to the tubular portion 12t and the conductor insertion hole 12h. it can. Furthermore, when the solder ring 20 is heated and melted, the solder flows through the tapered wall of the cylindrical portion 12t, and the rod-shaped conductor W can be soldered and fixed to the cylindrical portion 12t.

Therefore, as compared with the above-mentioned conventional example, in the present embodiment, the solder connection portion becomes stronger, and when external stress is applied to the solder connection portion, there is less risk of cracking in the solder connection portion, resulting in a rod-like shape. The connection reliability between the conductor W and the conductor connecting portion 12 can be improved.

Further, since the cylindrical portion 12t has a tapered shape that is wide at the base and narrow at the tip, the rod-shaped conductor W can be easily positioned and temporarily fixed to the conductor connecting portion 12.

Next, a method for manufacturing the solder connecting terminal having the above-described structure will be described.

FIG. 3A shows a state before the plate-shaped terminal member 10 is bent. In this drawing, first, a hole portion 13 having a slit S radially cut in the periphery is provided at the right end portion of the plate-like terminal member 10, and a conductor insertion hole 12h is provided from the hole portion 13 to the left at a predetermined interval. . Further, the plate-shaped terminal member 10 is bent at about 90 ° by a straight line B orthogonal to a center line A connecting the centers of the hole portion 13 and the conductor insertion hole 12h and having a predetermined interval on the left side of the conductor insertion hole 12h. Next, a conductor connecting portion 12 having a U-shaped cross section is formed by bending the conductor insertion hole 12h and the hole portion 13 at a predetermined interval along a straight line C and a straight line D orthogonal to the center line A by approximately 90 °. At this time, the terminal portion 11 for electrical connection, which is connected to the tip of the one standing wall 12a of the conductor connecting portion 12 and extends to the left side, is formed. Further, a solder ring 20 as shown in FIG. 3 (b) is inserted into the conductor connecting portion 12, and the radial slit S around the hole 13 is pressed from the outside of the conductor connecting portion 12 toward the rod-shaped conductor insertion hole 12h. A tapered cylindrical portion 12t is formed. At this time, as shown in FIG. 4, the solder ring 20 is fitted into the cylindrical portion 12t and held in the conductor connecting portion 12, so that the solder connecting terminal can be manufactured.

[0016]

[Effect of device]

 As described above, according to the present invention, after the rod-shaped conductor is temporarily fixed to the tubular portion of the conductor connecting portion, the solder ring can be heated and melted and the rod-shaped conductor and the tubular portion can be fixed by soldering. The connection portion becomes strong, and the connection reliability between the rod-shaped conductor and the conductor connection portion can be improved.

When the rod-shaped conductor is connected to the conductor connecting portion, since the diameter of the tubular portion is large at the base and gradually decreases toward the tip, the rod-shaped conductor is easily aligned with the conductor connecting portion and temporarily fixed. can do.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a solder connecting terminal according to the present invention.

FIG. 2 is a perspective view of the solder connection terminal of FIG.

3 (a) is a perspective view showing a state before processing the plate-shaped terminal member of the solder connection terminal of FIG. 1. FIG. (b) It is a perspective view of the solder ring of the terminal for solder connection of FIG. 1.

FIG. 4 is a plan view of the plate-shaped terminal member shown in FIG.
It is a perspective view showing a state where the solder ring of (b) is assembled.

FIG. 5 is a perspective view showing a state before a rod-shaped conductor is connected to a conventional solder connection terminal.

6 is a side view showing a state in which a rod-shaped conductor is soldered to the solder connection terminal of FIG.

[Explanation of symbols]

 11 Terminal part 12 Conductor connection part 12t Tapered cylindrical part 20 Solder ring

Claims (1)

[Scope of utility model registration request] 1. A solder connecting end portion having a terminal portion for electrical connection on one side and a conductor connecting portion on the other side, wherein the conductor connecting portion is provided with a tapered cylindrical portion, A solder ring is fitted and held on the tapered tubular portion, and a rod-shaped conductor is inserted into the tapered tubular portion, and then the rod-shaped conductor is soldered to the conductor connecting portion by heating and melting the solder ring. A terminal for solder connection, which is characterized by: