JPH08236168A - Connection structure between lead wire and metallic terminal - Google Patents

Abstract

PURPOSE: To connect a lead wire to a metallic terminal without soldering by retaining the lead wire in the retention part of the metallic terminal, and press- fitting the metallic terminal and the lead wire into a press-fitting mold under this condition. CONSTITUTION: A retention part 6 is made by bending the tip of a retaining member (metallic terminal) 1 (for example, spring material consisting of phosphor bronze, for example, about 0.25-0.5mm thick, and a lead wire 3 is pushed into this retention part 6 and is nipped elastically. A press-fitting mold 2 consisting of hard material such as metal or the like and having a U-shaped recess 5 is manufactured, and the metallic terminal 1 for nipping the lead wire 3 elastically is pushed into this recess 5 from the arrow direction and is set completely, thus the lead wire 3, the metallic terminal 1, and the press-fitting mold 2 are brought into strong contact with one another. Hereby, the manufacture cost of the electric product using the connection structure between the lead wire 3 and the metallic terminal 1 can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting structure for a lead wire and a metal terminal.

[0002]

2. Description of the Related Art When connecting a lead wire of a component such as a condenser or a high-voltage resistor built in an electric device such as a flyback transformer to a metal terminal, the lead wire of the component is soldered to the metal terminal.

[0003]

Conventionally, such a soldering work requires a long time, and the amount of solder at this time cannot be controlled sufficiently, so that the lead wire is inclined and an insulation distance from other parts is secured. Difficulty, additional work such as twisting or inserting the lead wire into the terminal occurs, and pre-processing such as rounding the tip of the lead wire is required, which causes thermal deformation of the connection part due to soldering. Since the stress is applied to the terminal, the terminal position is displaced.

The present invention has been made in view of the above points, and provides a connecting structure of a lead wire and a metal terminal which can be easily connected without soldering when connecting a lead wire of a component to the metal terminal. The purpose is to provide.

[0005]

In order to solve the above-mentioned problems, in the connection structure of the lead wire and the metal terminal of the present invention, the metal terminal and the lead wire are press-fitted while the lead wire is held in the holding portion of the metal terminal. It is characterized in that it is pressed into a molded body.

[0006]

Since the lead wire is press-fitted into the press-fitting molded body in a state where the lead wire is held in advance by the holding portion of the metal terminal, there is no possibility that the terminal position is displaced and the insulation distance from other parts can be easily controlled.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A connecting structure for a lead wire and a metal terminal according to the present invention will be described below with reference to the drawings.

FIG. 1 is a sectional view showing a connecting work process of a connecting structure of a lead wire and a metal terminal according to the present invention. FIG. 2 is a cross-sectional view showing a completed connection state of the lead wire-metal terminal connection structure of the present invention.

In FIG. 1, the connection structure of a lead wire and a metal terminal according to the present invention comprises a metal terminal 1 and a press-fitting molded body 2. The holding member 1 elastically sandwiches and holds the lead wire 3 pushed by hand in a holding portion 6 provided by bending the tip of the holding member 1.
It is made of a phosphor bronze plate of about 25 to 0.5 mm.

The press-fitting molded body 2 is a molded product made of a hard material such as metal, and is formed in a U-shape having a recess 5. As shown in FIG. 1, by pushing the metal terminal 1 holding the lead wire 3 elastically into the recess 5 of the press-fitting molded body 2 in the direction of the arrow, the metal terminal 1 bends, and as shown in FIG.
Fully fit into the recess 5. In this state, the lead wire 3, the metal terminal 1 and the press-fitted molded body 2 are in strong contact with each other.

FIG. 3 is a sectional view showing a connecting work process of another embodiment of the connecting structure of the lead wire and the metal terminal of the present invention.
FIG. 4 is a cross-sectional view showing a completed connection state of the connection structure of the lead wire and the metal terminal of FIG. FIG. 5 is a perspective view of the embodiment of FIG.

Also in this embodiment, the connecting structure of the lead wire and the metal terminal of the present invention includes the metal terminal 1 and the press-fitting molded body 2. The metal terminal 1 is for elastically sandwiching and holding the lead wire 3 pushed by hand in a holding portion 6 provided by bending its tip, and the press-fitting molded body 2 is a molded product of a hard material such as metal. It is manufactured in a U-shape having a concave portion 5, and a bent portion 2a is provided in the opening. These operate in the same manner as in the embodiment shown in FIGS. 1 and 2, and the bent portion 2a serves to prevent the metal terminal 1 from coming off. FIG. 6 is a perspective view of another embodiment of the lead wire / metal terminal connection structure of the present invention.

In this embodiment, the press-fitting molded body 2 is formed in a box shape, and several rods 7 stand upright from the bottom of the box. These rods 7 serve as guides for the metal terminals 1 holding the lead wires 3 and are for fixing these at appropriate positions.

7 and 8 are cross-sectional views of another embodiment of the metal terminal.

By appropriately designing the metal terminal 1 according to the specifications as shown in these embodiments, the lead wire 3 can be easily fixed at an appropriate position.

FIG. 9 is a sectional view of another embodiment of the metal terminal.

In this embodiment, the metal terminal 1 holds two lead wires 3 and 4. Even if the number of lead wires accommodated in this way is increased, it becomes possible to attach these lead wires to appropriate positions.

FIG. 10 is a sectional view showing a connecting work process of another embodiment of the connecting structure of the lead wire and the metal terminal of the present invention. FIG. 11 is a sectional view showing a completed connection state of the connection structure of the lead wire and the metal terminal of FIG. 12 and 13 are perspective views of another embodiment of the connecting structure of the lead wire and the metal terminal of the present invention. 14 and 15 are cross-sectional views of another embodiment of the connection structure of the lead wire and the metal terminal according to the present invention.

In these embodiments, both ends of the metal terminal 1 holding the lead wire 3 are pressed into the press-fitting molded body 2 and fixed. Further, in the embodiment shown in FIGS. 12 and 13, a terminal piece 8 for connecting to another component is formed on the metal terminal 1.

[0020]

As described above, in the connection structure of the lead wire and the metal terminal of the present invention, the metal terminal and the lead wire are press-fitted into the press-fitting molded body while the lead wire is held in the holding portion of the metal terminal. Therefore, the following excellent effects can be obtained. (1) The lead wire, the metal terminal, and the press-fitted molded body are in strong contact with each other, and these can be electrically well connected. (2) It is not necessary to pre-process the tip of each lead wire. (3) Soldering work becomes unnecessary, thermal deformation due to it is eliminated, and management of the amount of solder becomes unnecessary. (4) There is no deviation of the terminal position due to the conventional lead baring. (5) Since the metal terminal holding the lead wire is fixed to the press-fitting molded body, it is easy to control the insulation distance from other parts. (6) The manufacturing cost of an electric product using the connection structure of the lead wire and the metal terminal is reduced. (7) A plurality of lead wires can be connected to one metal terminal. (8) It does not depend on the strength (diameter, etc.) of the lead wire.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a connecting work process of a connecting structure of a lead wire and a metal terminal according to the present invention.

FIG. 2 is a cross-sectional view showing a completed connection state of the connection structure of the lead wire and the metal terminal of the present invention.

FIG. 3 is a sectional view showing a connecting work process of another embodiment of the connecting structure of the lead wire and the metal terminal of the present invention.

FIG. 4 is a cross-sectional view showing a completed connection state of the connection structure of the lead wire and the metal terminal of FIG.

5 is a perspective view of the embodiment of FIG.

FIG. 6 is a perspective view of another embodiment of the connection structure of the lead wire and the metal terminal of the present invention.

FIG. 7 is a sectional view of another embodiment of the metal terminal.

FIG. 8 is a sectional view of another embodiment of the metal terminal.

FIG. 9 is a sectional view of another embodiment of the metal terminal.

FIG. 10 is a cross-sectional view showing a connecting work process of another embodiment of the connecting structure of the lead wire and the metal terminal of the present invention.

11 is a cross-sectional view showing a completed connection state of the connection structure of the lead wire and the metal terminal of FIG.

FIG. 12 is a perspective view of another embodiment of the connection structure of the lead wire and the metal terminal of the present invention.

FIG. 13 is a perspective view of another embodiment of the connection structure of the lead wire and the metal terminal of the present invention.

FIG. 14 is a cross-sectional view of another embodiment of the connection structure of the lead wire and the metal terminal of the present invention.

FIG. 15 is a sectional view of another embodiment of the connection structure of the lead wire and the metal terminal of the present invention.

[Explanation of symbols]

 1 Metal Terminal 2 Press-Fit Molded Body 3 Lead Wire 4 Lead Wire 5 Recess 6 Holding Part 7 Rod 8 Terminal Piece

Claims (1)

[Claims] 1. A connection structure between a lead wire and a metal terminal, wherein the metal terminal and the lead wire are press-fitted into a press-fitting molded body in a state where the lead wire is held in a holding portion of the metal terminal.