JPH11339869A - Reinforced structure of pressure contact terminal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reinforced structure of a pressure contact terminal capable of effectively reinforcing a beam having a slot making pressure contact with a cable. SOLUTION: This pressure contact terminal 1 has a beam 1f having a slot 1e making pressure contact with a cable formed at the center of a longitudinal bent part 1a formed by bending a conductive metal sheet; an engagement part 1i is formed on the front side of the bent part 1a; and barrel parts 1m, 1n formed on the rear side of the bent part 1a; reinforced parts 1q, 1r drawn inward in a recessed shape formed on both wall parts 1c, 1d of the bent part 1a on the engagement part 1i side of the beam 1f and on barrel parts 1m, 1n side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for reinforcing a pressure contact terminal which can effectively reinforce a beam having a slot pressed against an electric wire.

[0002]

2. Description of the Related Art In recent years, for example, in automobiles, there has been a trend toward higher functions such as a navigation system, and accordingly, the diameter of a wire harness, which is an electric wiring body in the vehicle, has been increased, and productivity has been reduced. . Also, in order to improve the livability, the wiring space for the wiring harness in the vehicle has been reduced. In this way, it is becoming more difficult every year to arrange the wiring harness in the car,
There is a demand for a reduction in the diameter of a wire harness and a reduction in the size of a connector including connection terminals.

[0003] To reduce the size of the wires constituting the wire harness and to reduce the size of the connection terminals, especially the crimp terminals, the manufacturing process of the crimp terminals has been changed to reduce the size of the crimp terminals. Instead, simply reducing the size does not improve productivity.

[0004] For this reason, studies have been made to use a press contact terminal capable of connecting a multi-pole at once, instead of a crimp terminal.
In order to reduce the size of the insulation displacement terminal, the thickness of the terminal material (conductive metal plate) of the insulation displacement terminal is reduced.

[0005]

However, in the conventional press contact terminal, the thickness of the conductive metal plate is reduced in order to reduce the size.
There is a possibility that the slot is greatly deformed outward and spreads, resulting in poor pressure welding of the electric wire. This deformation is likely to occur when handling and transporting the press contact terminal.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and has as its object to provide a reinforcing structure of a press contact terminal capable of effectively reinforcing a beam having a slot press-contacting an electric wire.

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention forms a beam having a slot which is pressed against an electric wire at the center in the longitudinal direction of a bent portion formed by bending a conductive metal plate. A press-fit terminal having a fitting portion formed on the front side of the bent portion and a barrel portion formed on the rear side of the bent portion, wherein the inner side is formed on both side walls of the bent portion on the fitting portion side of the beam and the barrel portion side. An object of the present invention is to provide a reinforcement structure for a pressure contact terminal, wherein a reinforcement portion formed by drawing in a concave shape is formed.

According to the present invention, concave reinforcing portions are respectively formed on both side walls of the bent portion of the press contact terminal at the front and rear positions of the beam, so that the front and rear positions of the beam can be maintained even if the terminal material is thin. The strength of the side walls is improved, and the beam is less likely to deform outward.

According to a second aspect of the present invention, the conductive metal plate is bent into a substantially U-shape to form a bottom wall and both side walls,
The bottom wall is formed by cutting a pair of beams having slots for pressing against the electric wire, and bending the pair of beams above the bottom wall so as to face each other in a direction perpendicular to the length direction. The outer widths of both side ends of the pair of beams are formed so as to substantially match the inner widths of the side walls, and cutouts formed at the upper ends of the side walls at the upper ends of the pair of beams. An engaging portion for engaging with the notch groove is formed, and a reinforcing portion formed by drawing inward concavely is formed on both side walls of the bent portion on the fitting portion side and the barrel portion side of the beam. be able to.

According to this structure, in addition to the function of the first aspect, both ends of the pair of beams formed on the bottom wall of the press contact terminal are reinforced by being in contact with the inner surfaces of the both side walls. Are hardly deformed outwardly, and the engaging portions of the beams are engaged with the notch grooves in both side wall portions, so that they are hardly deformed in the bending and returning directions.

[0011]

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

As shown in FIG. 4, the press contact terminal 1 is formed by punching a conductive metal plate into a predetermined developed shape by a press or the like, and bending the conductive metal plate into a substantially U-shape at the valley fold lines a and b.
(A) As shown in (b), a bottom wall 1b and both side walls 1c and 1d are formed in the bent portion 1a.

A pair of beams 1f, 1f having slots 1e, 1e which are pressed into contact with the electric wire are formed in the bottom wall 1b at the center in the longitudinal direction of the bent portion 1a. , 1f are bent along the valley fold lines c and d above the bottom wall 1b so as to face each other in a direction perpendicular to the length direction.

The outer widths of both ends of the pair of beams 1f, 1f are formed so as to substantially coincide with the inner widths of the side walls 1c, 1d. Also, at the upper ends of the pair of beams 1f, 1f, engaging portions 1g, 1g protruding outward are formed, respectively, and at the upper ends of the side walls 1c, 1d, the engaging portions 1g, 1g are engaged. Notch grooves 1h, 1h are formed respectively.

[0015] Both side walls 1 on the front side of the bent portion 1a
The upper ends of c and 1d are bent inward at the valley fold lines e and f, respectively, to form a square cylindrical fitting portion 1i, while the front end of the bottom wall 1b is rearward at the valley fold line g. The contact tongue piece 1j that is folded at 180 degrees is formed, and the beam 1 on the front side is formed.
The bottom wall portion 1b near f is cut into a locking portion 1k which is folded back in a U-shape, and the tip of the contact tongue portion 1j is locked by the locking portion 1k. The upper swing of the portion 1j is restricted. A U-shaped notch 1p is formed in the bottom wall portion 1b between the contact tongue portion 1j and the locking portion 1k.

The both side wall portions 1 on the rear side of the bent portion 1a
At the upper ends of c and 1d, barrel portions 1m and 1n are formed alternately in the length direction.

The contact tongue 2 has a shape along the upper surface of the bottom wall 1b on the front side of the bent portion 1a and the inner surface of the contact tongue 1j.
The contact tongue 2 is provided with a falling portion 2a which engages with the notch 1p of the bottom wall 1b. The contact tongue 2 is inserted between the upper surface of the bottom wall 1b and the inner surface of the contact tongue 1j, and the contact tongue 2 is positioned in a state where the falling portion 2a is engaged with the notch 1p. The upper swing (elasticity) of the portion 1j is backed up.

As shown in FIGS. 1 and 2, the press-fitting terminal 1 completed by bending as described above has a fitting portion 1i of the front beam 1f and a barrel portion 1m, 1 of the rear beam 1f.
Reinforcing portions 1q, 1r formed by drawing inward in the width direction are formed on both side walls 1c, 1d of the n-side bent portion 1a, respectively.

With the above reinforcing structure, concave reinforcing portions 1q and 1r are formed on both side walls 1c and 1d of the bent portion 1a at the front and rear positions of the beam 1f of the press contact terminal 1, respectively. Even if the thickness of the material is small, the strength of the side walls 1c and 1d at the front and rear positions of the beam f is improved, and the beam 1f is less likely to deform outward even when the wire is pressed against the slot 1e. As a result, the thickness of the terminal material of the press contact terminal 1 can be reduced, so that the compact press contact terminal 1 having excellent productivity can be obtained. As a result, the connector can be downsized. The diameter of the wire harness can be reduced, and the weight can be reduced.

In the present embodiment, the bottom wall 1b of the press contact terminal 1
The both ends of the pair of beams 1f formed on the side walls 1
Each beam 1f is hardly deformed outward because it is reinforced by contacting the inner surfaces of c and 1d.

Further, the engaging portion 1g of each beam 1f engages with the notch groove 1h of both side walls 1c and 1d, and each beam 1f
Are less likely to be deformed in the bending and returning directions.

[0022]

As is clear from the above description, the reinforcing structure of the pressure contact terminal according to the present invention is one in which concave reinforcing portions are formed on both side walls of the bent portion at the front and rear positions of the beam of the pressure contact terminal, respectively. Therefore, even if the thickness of the terminal material is small, the strength of the side walls at the front and rear positions of the beam is improved, and the beam is less likely to deform outward. Therefore, the thickness of the terminal material of the press contact terminal can be reduced, and a compact press contact terminal having excellent productivity can be obtained. Accordingly, the connector can be downsized. In addition, the diameter of the wire harness can be reduced, and the weight can be reduced.

In addition, the pair of beams formed on the bottom wall of the pressure contact terminal are reinforced by contacting the inner surfaces of the side walls, so that the beam is deformed outward. At the same time, the engaging portions of the beams are engaged with the notch grooves in both side walls, so that the beams are less likely to be deformed in the bending and returning directions.

[Brief description of the drawings]

FIG. 1 is a plan view of a press contact terminal of the present invention.

FIG. 2 is a perspective view of a beam and a reinforcing portion of the press contact terminal.

3A and 3B are press-contact terminals, wherein FIG. 3A is a perspective view, FIG. 3B is a perspective view of a front side partly cut away, and FIG. 3C is a perspective view of a contact tongue.

FIG. 4 is a press contact terminal, (a) is a developed plan view,
(B) is a top view after bending.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pressure contact terminal 1a Bending part 1b Bottom wall part 1c, 1d Side wall part 1i Fitting part 1m, 1n Barrel part 1q, 1r Reinforcement part

Claims (2)

[Claims] 1. A beam having a slot for pressing against an electric wire is formed at the center in the longitudinal direction of a bent portion obtained by bending a conductive metal plate, and a fitting portion is formed at a front side of the bent portion to form a beam. In a pressure contact terminal having a barrel portion formed on the rear side, a reinforcing portion is formed by drawing inward concavely on both side walls of the bent portion on the fitting portion side of the beam and the bent portion on the barrel portion side. Reinforced structure of insulation displacement terminal. 2. A conductive metal plate is bent into a substantially U-shape to form a bottom wall and both side walls, and a pair of beams having slots for pressing against an electric wire are cut into the bottom wall. Forming and bending the pair of beams above the bottom wall so as to oppose each other in a direction perpendicular to the length direction, while changing the outer width of both side ends of the pair of beams to the inner width of the both side walls. And a pair of beams formed at the upper ends of the pair of beams to engage with cutout grooves formed at the upper ends of the side walls. The reinforcing structure for a press-contact terminal according to claim 1, wherein reinforcing portions formed by drawing inward concavely are formed on both side walls of the bent portion on the side and the barrel portion side.