JP2850109B2 - Connection terminal - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector terminal.

[0002]

2. Description of the Related Art As shown in FIG. 10 , a conventional connector terminal 101 is made of a thin and long conductive metal sheet and has a central portion curved in a U-shape. The terminal 101 is held by the body 103 by pushing the U-shaped part 102 into the recess 104 of the body 103 from below. Terminal 1
A contact portion 105 protruding to the front side is formed on one side of 01, and the urging force is applied by the U-shaped portion 102. The other side end of the terminal 101 extends to the back side of the body 103 as a connecting portion 107 for connecting an electric wire.

[0003] However, such a connector terminal is formed of a thin and long conductive metal sheet, and the contact portion 105 is also in the form of a thin plate. or,
In recent years, since connectors have been miniaturized,
There has been a problem that the width of the terminal is reduced and the strength of the terminal is further reduced. In addition, there has been a problem that the interval between adjacent terminals must be narrowed with the miniaturization, and the thin plate shape occupies a space in the width direction and cannot be narrowed. Furthermore, there has been a problem that the contact pressure per unit area also decreases as the plate width decreases, and a predetermined contact pressure cannot be obtained, resulting in poor contact reliability.

[0004]

SUMMARY OF THE INVENTION An object of the present invention is to provide a connector terminal which can be miniaturized, has high strength, and has good contact reliability.

[0005]

According to the present invention, an electroconductive plate material is punched into an elongated shape, and one end is used as a contact portion, and the other end is used as a connection portion electrically connected to a conductive pattern on a circuit board. wherein the connection terminal is bent to be elastically deformed between the connection portion, after folding along the longitudinal direction at the center of the plate width the contact portion, superimposed in close contact with both side edges and
Characterized in that was.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 to 9 show an embodiment of the present invention. In FIG. 8, 1 is an insulating housing, and 2 is a connection terminal.

The insulating housing 1 is generally L-shaped as shown in FIGS. 5 to 9, and connection terminal receiving grooves 7 for holding the connection terminals 2 are provided at predetermined intervals. A plurality is formed. The connection terminal receiving groove 7 is open at the top, and communicates with the bottom surface 1a of the insulating housing 1 from the middle to the rear end (right corner in FIG. 9).

A rectangular groove 8 is formed in a side wall of the connection terminal receiving groove 7.

An opening edge 13 is formed in the bottom surface 1a of the insulating housing 1.

Further, a stopper wall 6 is formed integrally with the insulating housing 1.

As shown in FIGS. 1 to 4, the connection terminal 2 is bent substantially from a U-shaped bent portion 5 and has a substantially U-shape as a whole. It is formed by pressing from a metal plate.

Further, one end of the U-shape is further bent outward to form a leg 4. The legs 4 are provided on the bottom surface 1 of the insulating housing 1.
a, and is soldered to the circuit pattern on the circuit board to be electrically connected to the circuit pattern. In the present embodiment, the leg portion 4 is a connection portion of the connection terminal 2.

On the other hand, the other end of the U-shape is a contact portion 3. The contact portion 3 is formed by bending downward along the longitudinal direction at the center of the plate width, and after bending, the both side edges are tightly overlapped. Here, the plate width is the width of A in FIG. 2, the longitudinal direction is the left and right direction in FIG. 2, and the both side edges are both ends of the plate width. In addition, contact part 3
Has an intermediate portion along the longitudinal direction projecting outward.

A support 11 is provided between the leg 4 and the contact 3.
Are formed. A claw 9 is formed slightly behind the center of the support portion 11.

Next, the assembly of this connector will be described. First, a conductive metal sheet material is punched into a slender shape by a press machine. At the time of punching, punching is performed such that the plate width of the support portion 11 is large at the boundary between the step portions 10 and 12, and the plate width of the contact portion 3 and the leg portion 4 is smaller than that of the support portion 11. The width of the support portion 11 is substantially equal to the width between the two square grooves 8, 8 that are recessed on both sides of the connection terminal receiving groove 7. Next, the punched plate material is bent into a U-shape at the bending portion 5, and at the same time, the leg portion 4 is bent outward by 90 °. Next, the connection terminal 2 thus formed
Is inserted through the bent portion 5 through the opening below the connection terminal receiving groove 7 until the leg portion 4 comes into contact with the opening edge 13. When the insertion is completed, the tip of the contact portion 3 comes into contact with the stopper wall 6 and is slightly elastically deformed inwardly in the U-shape. The connection terminal 2 is fixed to the insulating housing 1 with the claw 9 slightly biting into the square groove 8.

In the connector terminal assembled as described above, when the conductor contacts the contact portion 3, the portion from the step portion 10 to the contact portion 3 is elastically deformed inward to obtain a predetermined contact pressure, and Make an electrical connection. As a result, the conductor and the circuit pattern are electrically connected through the legs 4 soldered to the circuit pattern on the circuit board.

In such a connector terminal, since the contact portion 3 is formed by bending the contact portion 3 along the longitudinal direction at the center of the plate width, the connection terminal 2 is formed by pressing a thin plate material. However, the strength of the contact portion 3 is increased. Further, since the occupied area in the plate width direction is reduced, the pitch can be reduced, and the size can be reduced. Further, the contact pressure per unit area is increased, and the contact reliability is improved. In addition, since the contact portion 3 is formed by projecting a central portion along the longitudinal direction outward, reliable contact can be obtained at the same contact position of the contact portion. Furthermore, since the tip of the contact portion 3 abuts against the stopper wall 6 of the insulating housing 1 and the connection terminal 2 is fixed to the insulating housing 1 in a state of being slightly elastically deformed inside the U-shape, the conductor When contact is made, the amount of elastic deformation of the connection terminal 2 for obtaining a predetermined contact pressure can be reduced, and the size can be further reduced.

The present invention is not limited to the above embodiment, and various modifications can be made within the scope of the present invention.
For example, the connection terminal 2 does not necessarily need to be bent in a U-shape, and may be in an S-shape or an L-shape as long as the contact portion 3 is bent in the longitudinal direction at the center of the plate width. or,
In the present invention, the side portions are closely contacted and overlapped after the contact portion 3 is bent, but the contact portion 3 does not necessarily have to be closely contacted and may be bent. The leg 4 is also bent from the support 11 by approximately 90 °.
May be formed to extend straight behind.

[0019]

As described above, since the connection terminal of the present invention is formed by bending downward along the longitudinal direction at the center of the plate width of the terminal, the strength can be increased and the terminal can be strengthened. The arrangement pitch can be narrowed, and the entire connector can be downsized. Further, the contact pressure is increased, and the contact reliability is improved.

[0020]

[Brief description of the drawings]

FIG. 1 is a front view of a connection terminal of the present invention.

FIG. 2 is a plan view of the connection terminal of the present invention.

FIG. 3 is a side view of the connection terminal of the present invention.

FIG. 4 is a sectional view taken along line AA of FIG. 1;

FIG. 5 is a front view of the connector to which the connection terminal according to the present invention is attached.

FIG. 6 is a plan view of a connector to which a connection terminal according to the present invention is attached.

FIG. 7 is a rear view of the connector to which the connection terminal according to the present invention is attached.

FIG. 8 is a side view of a connector to which a connection terminal according to the present invention is attached.

FIG. 9 is a sectional view taken along line BB of the connector to which the connection terminal according to the present invention is attached.

FIG. 10 is a sectional view of an entire conventional connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Insulating housing 2 Connection terminal 3 Contact part 4 Leg part 5 Bend part 6 Stopper wall 7 Connection terminal accommodation groove 8 Square groove 9 Claw 10 Step part 11 Support part 12 Step part 13 Opening edge

Claims (1)

(57) [Claims] 1. A conductive plate material is punched into an elongated shape, one end of which is used as a contact portion, and the other end is used as a connection portion which is electrically connected to a conductive pattern of a circuit board. In the connection terminal that is bent so as to be elastically deformable, after the contact portion is bent along the longitudinal direction at the center of the plate width ,
A connection terminal characterized in that both side edges are closely attached and overlapped .