JPH06168743A - Contact for pressure operation - Google Patents

Abstract

PURPOSE:To protect a connection part from external force applied to a wire and reduce manufacture cost by providing a contact for pressure contact having a support part formed thereon so as to enable to hold a wire in connected condition without using any additional component. CONSTITUTION:In a contact 10 for pressure contact, a middle position of a wire 12 is inserted under pressure into a slit-shaped cut-out 11 formed in a metal thin plate, thereby a coating 12a of the wire 12 in inserted while being cut so that a conductor 12b inside the wire 12 and an inside edge 11b of the slit-shaped cut-out 11 are electrically connected with each other. In this case, the wire 12 can be held so that the wire 12 may be not released from the cut-out 11 by providing a support part 13 which is bent after insertion of the wire 12 into the cut-out 11 to make contact with the surface of the wire 12 in one body near the cut-out 11. The wire 12 can be fixed without using any additional component, manufacture cost of a connector using the contact 10 is reduced and strength of the contact itself can be improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contact used for a press-connecting connector, and more particularly to a technique for preventing disconnection of a wire and improving reliability of connection.

[0002]

2. Description of the Related Art As a contact used in a press-connecting connector, there is one having a structure shown in FIGS. As shown in FIG. 4, this contact 1 has a slit-shaped notch 2 formed from one end face in the longitudinal direction of a thin metal plate formed in a strip shape along the longitudinal direction. The slit-shaped notch 2 has a width dimension smaller than the outer diameter of the wire 3 to be inserted and has a width dimension such that the conductor 3a disposed in the wire 3 is sandwiched and pressed. A V-shaped wire introducing portion 4 is formed in the upper opening 2a. The wire introduction portion 4 and the slit-shaped notch portion 2 are formed with sharp end faces so that the coating 3b of the wire 3 to be inserted can be cut.

To connect the wire 3 to the contact 1, for example, the contact 1 is placed upright so that the opening 2a of the slit-like cutout 2 faces upward, and the slit-like cutout 2 is placed horizontally from above. The held wire 3 is pushed down and brought into contact with the wire introducing portion 4. Then, by pressing the wire 3 against the wire introducing portion 4, the wire 3 is pushed by the end surface of the wire introducing portion 4.
The coating 3b of is cut. At this time, since the wire introducing portion 4 is formed in a V shape, the wire 3 is guided to the upper opening 2a of the slit-shaped notch 2 located at the lower center of the wire introducing portion 4. Then, from this state, the wire 3 is further pushed down so that the conductor 3a exposed by cutting the coating 3b is sandwiched between the slit-shaped notches 2 and the wire 3
Is inserted up to the bottom of the slit-shaped notch 2, and the contact 1
And the wire 3 are electrically connected.

By the way, with such a contact 1, the connection between the wire 3 and the contact 1 is held only by the frictional force due to the contact between the conductor 3a of the wire 3 and the slit-shaped notch 2 of the contact 1, When the external force directed to the direction of the opening 2a of the slit-shaped notch 2 (upward in FIG. 4) acts on the wire 3, the wire 3
It is conceivable that the wire may easily move in the slit-shaped notch 2 and the connection may come off. Even if the wire is not disconnected, the wire 3 may be slid with respect to the slit-shaped notch 2 to cause a problem such as disconnection of the conductor 3a. It is necessary to take some measures to fix it in the direction along the notch 2.

In order to solve these problems, conventionally,
As shown in FIG. 5, a connector housing 5 that holds a plurality of contacts 1 in parallel, and a wire pressing member 6 that is combined with the connector housing 5 from the direction of the opening 2a of the slit-shaped notch 2 formed in the contact 1. To prepare. The connector housing 5 is formed with an engagement hole 5a for engaging the wire pressing member 6, and the engagement hole 5a is formed.
Fit the engaging piece 6a provided on the wire pressing member 6 into the
By engaging with each other, the connector housing 5 and the wire pressing member 6 are held in a connected state.
Then, by sandwiching the wire 3 connected to the contact 1 between the connector housing 5 and the wire pressing member 6 assembled in this way, the wire 3 and the contact are also contacted against the external force applied to the wire 3. 1 and 1 are connected.

[0006]

However, in such a method, in order to hold the wire 3 and the contact 1 in the connected state, a separate component such as the wire pressing member 6 must be prepared. Instead, the number of parts will increase. Moreover, such a contact 1 is usually
Since a plurality of types of press-connecting connectors (not shown) having different numbers of poles are formed by using the same shape, the wire pressing member 6 must be prepared for each press-connecting connector, which complicates parts management. At the same time, there was the inconvenience that the product cost increased.

The present invention has been made in view of such circumstances, and it is possible to hold the wire 3 in a connected state without using another component such as the wire pressing member 6, and the wire 3 can be held. The purpose is to protect the connection part from external force applied to the product, reduce the product cost, and the like.

[0008]

In order to achieve the above object, the present invention proposes the following two means. The first means is to cut the coating at the edge of the slit-shaped notch by pressing and inserting an intermediate position of the wire into the slit-shaped notch provided at the end of the wire, A contact for pressure contact that is conducted, wherein a support portion that is bent after the insertion of the wire and is brought into contact with the surface of the wire from the opening side of the slit is provided in the vicinity of the slit. The second means has two slit-shaped notches which are formed in a facing state with a mutual gap therebetween and open in the same direction, and the support portion is provided outside the mutual gap. The formed pressure contact is proposed.

[0009]

According to the pressure contact according to the first means,
When the wire is pressed and inserted into the slit-shaped notch at an intermediate position, the coating of the wire is cut by the edge of the slit-shaped notch, and the wire and the contact are electrically connected. After that, by bending the support portion integrally formed in the vicinity of the slit-shaped notch, the support portion is brought into contact with the surface of the wire from the opening side of the slit-shaped notch, and the wire does not come off from the slit-shaped notch. Will be retained as. According to the pressure contact according to the second means, when the wire is inserted into the two slit-shaped notches provided in the opposed state, the wire is electrically connected to the pressure contact at two locations. And
By bending the support portion after inserting the wire, the wire is held so as not to come off the slit-shaped notch. Since the support part is arranged outside the mutual gap of the slit-shaped notches, even when the wire is bent in the direction of the support part due to an external force, the support part is not in contact with the wire. As a result, the connection between the wire and the contact is protected.

[0010]

EXAMPLES The first example of the pressure contact according to the present invention will be described below.
Embodiments will be described with reference to FIGS. 1 and 2.
In each of these figures, reference numeral 10 is a contact, 11 is a slit-shaped notch, 11a is an opening, 11b is an inner edge portion, 12 is a wire, 12a is a coating, 12b is a conductor, 13 is a support portion, 13a is a support portion, and 13b is a wire. Holding part, 13
c is a stopper, 14 is a wire connecting portion, 15 is a connecting portion,
Reference numeral 16 is a wire introducing portion, 16a is an inner edge portion, 17 is a connector housing, F is an external force, and G is a parallel interval (mutual gap).

The pressure contact 10 of this embodiment (hereinafter, referred to as
Simply called a contact. ) Is a slit-shaped cutout 11 formed by cutting a coating 12a of the wire 12 by pressing and inserting the wire 12 into a slit-shaped cutout 11 formed in a thin metal plate. It is common to the pressure contact 1 of the conventional example in that it is electrically connected to the inner edge portion 11b of 11. However, the contact 10 of the present embodiment is different from the conventional contact 1 in that the support portion 13 that holds the wire 12 inserted in the slit-shaped notch 11 in a conductive state is provided.

As shown in FIG. 1, the contact 10 of the present embodiment is formed by bending a strip-shaped thin metal plate so that two wire connecting portions 14 are arranged at a parallel interval G.
And a connecting portion 15 that connects the wire connecting portion 14 to each other, and is formed in a U-shape. Each of the wire connecting portions 14 is formed with a slit-shaped notch 11 that is open to the side of the connecting portion 15 and that is arranged in an opposing state with the connecting portion 15 interposed therebetween. The slit 15 is connected to the connecting portion 15. The wire introducing portion 16 is formed.

The slit-shaped notch 11 is an elongated notch formed in the vicinity of the center position in the width direction of the wire connection portion 14 and having a predetermined length along the lengthwise direction. The outer diameter of the coating 12a of the wire 12 is smaller than that of the conductor 12b inside the wire 12.

The wire introducing portion 16 is formed in such a shape that the opening 11a side of the slit-shaped notch 11 is widened toward the connecting portion 15, and guides the insertion of the wire 12 into the slit-shaped notch 11. Has become. The wire introducing portion 16 and the inner edge portions 16a and 11b of the slit-shaped notch 11 are in contact with the wire 12.
The coating 12a is sharply formed so that it can be cut.

Of the two wire connecting portions 14, one wire connecting portion 14 (the wire connecting portion 14 on which the bending force is easily applied to the wire 12) is provided with a support portion 13 on its side portion. ing. The support unit 13 is
A supporting portion 13a formed by being bent vertically from the wire connecting portion 14 toward the outside of the mutual gap at a lateral position of the slit-shaped notch 11 provided in the wire connecting portion 14, and the supporting portion 13a. An L-shaped member having a wire holding portion 13b formed in the direction of the opening 11a in the direction along the slit-shaped notch 11 from the tip portion of 13a, and is integrally formed with the wire connecting portion 14. Has been done.

The wire holding portion 13b is adapted to be bent in the direction of the slit-shaped notch 11 with the connecting portion with the supporting portion 13a as a fold, and the tip of the wire holding portion 13b is bent at the above-mentioned bent portion. A stopper 13c for holding the wire 12 in contact with the wire holding portion 13b by being further bent in the direction is provided.

When the wire 12 is connected to the contact 10 thus constructed, the contact 10 is
As shown in FIG. 1, by arranging in an upright state, the opening 11a of the slit-shaped notch 11 and the wire introducing portion 16 provided in the opening 11a are arranged so as to be located in the upper part. Next, the wire 12 held in a horizontal state is lowered from above the wire introducing portion 16 and brought into contact with the wire introducing portion 16. From this state, when the wire 12 is further lowered, the wire 12 is
6 is guided to the slit-shaped notch 11 and the coating 12a is cut by the wire introducing portion 16 and the inner edge portions 16a and 11b of the slit-shaped notch 11.
The conductor 12b inside 2a is exposed. Then, the exposed conductor 12b is brought into contact with the inner edge portion 11b of the slit-shaped notch 11, so that the wire 12 and the contact 10 are conducted, and both 12 and 10 are connected.

After this, as shown by the chain line in FIG. 1, the wire holding portion 13b of the support portion 13 is connected to the wire 12
A position (a supporting portion 13a and a wire holding portion 13b)
Bend it until the angle with is about 90 °). As a result, the wire holding portion 13b has the slit-shaped notch 11
The wire 12 is prevented from coming off the slit-shaped notch 11 by coming into contact with the wire 12 from the side of the opening 11a.

Here, the support portion 13 provided in the vicinity of the slit-shaped notch 11 is arranged outside the slit-shaped notch 11, which is formed facing each other, that is, the connecting portion of the wire 12 and the contact 10 at two locations. Therefore, as shown in FIG. 2, even when an external force F that bends the wire 12 in the direction of the support portion 13 is applied, the support portion 1
The wire 12 is supported by the wire holding portion 13b of No. 3, and as a result, the external force F is prevented from acting on the connection portion, and the connection portion is maintained in a healthy state.

Further, since the contact 10 is usually used in a state where it is inserted in the connector housing 17 as shown by the chain line in FIG. 2, even when an external force in the opposite direction of the support portion 13 acts, The connector housing 17 supports the wire 12 and maintains the soundness of the wire connection portion. Furthermore, in the wire holding portion 13b,
Since the stopper 13c is provided, the wire 12
In addition, even when an external force F that bends in the direction along the surface of the wire holding portion 13b acts, the wire 12 is held in contact with the stopper 13c, and the influence of the external force on the connection portion is avoided. become.

The following techniques can be adopted in this embodiment. That is, the contact 10 is formed by bending a thin metal plate in a U shape. Instead, the contact 10 is formed in a U shape, and the wire connecting portion 14 is formed of two parallel members. ,
Although it arrange | positioned so that it may have an arbitrary relative angle and provided the wire introduction part 16 in the connection part 15 which connects the wire connection part 14, instead of this, the connection part 15 is provided in the side of the wire connection part 14. And the slit-shaped notch 11 is formed in parallel with the connecting portion 15 or at a predetermined angle, and the wire introducing portion 16 is provided on the opening 11a side.
And the support portion 13 is provided on the wire connecting portion 14 on one side, but instead of this, it is provided on both wire connecting portions 14.

Next, a second embodiment of the pressure contact according to the present invention will be described with reference to FIG.

This contact 20 is common with the contact 1 of the prior art in that it has a single strip-shaped wire connecting portion 21, but has a support portion 22 on its side. They differ in points.

Like the support portion 13 of the first embodiment, the support portion 22 is also an L-shaped member provided on the side of the slit-shaped notch 23, and the side portion of the wire connecting portion 21 can be bent. Are made to project perpendicularly to the wire connecting portion 21 and in the opposite direction. Then, after the wire 24 is inserted into the slit-shaped notch 23, the wire holding portion 22 a of the support portion 22 is bent and brought into contact with the wire 24, thereby preventing the wire 24 from coming off the slit-shaped notch 23. Further, both sides of the connection portion 25 of the wire 24 and the contact 20 are supported by the support portion 22. A stopper 22b is provided at the tip of the wire holding portion 22a, as in the first embodiment, to prevent the wire 24 from being bent by an external force acting on the wire 24, thereby improving the soundness of the connection portion 25. I am trying to do it.

Further, the conventional contact 1 is formed in the shape of one strip plate, and its strength is ensured only by the section modulus of the thin metal plate, so that it is difficult to improve the strength. However, the contact 20 of the present embodiment
The strength is improved by the support portion 22 formed by bending the side portion of the wire connection portion 21, and it is possible to prevent deformation and the like when the wire 24 is connected. Further, since the support portion 22 is projected from the wire connection portion 21, by keeping the support portion 22 in contact with the connector housing (not shown), it is possible to counter the pressing force when the wire 24 is pressed and inserted. Therefore, it becomes easy to fix the contact 20.

In the contact 20 of this embodiment, the support portions 22 are provided on both sides of the wire connecting portion 21, but when the external force acting on the wire 24 is only one side, The support portion 22 may be provided in only one direction in which an external force acts.

[0027]

As described in detail above, in the press contact according to the first aspect of the present invention, the wire is inserted into the vicinity of the slit-like cutout after the wire is inserted and bent from the opening side of the slit-like cutout. Since the support part that is brought into contact with the surface is integrally provided, the following effects are obtained. The support that is bent after inserting the wire holds the wire so that it does not come out of the slit-shaped notch, so the wire can be fixed without using separate parts, and the product cost of the connector that uses the contact is reduced. can do. Since the support portion is bent and brought into contact with the wire, it can be applied to a wire having any outer diameter by adjusting the bending angle according to the outer diameter of the coating of the wire. Since the thin metal plate is bent to integrally form the support portion, the strength of the contact itself can be improved. In the pressure contact according to the second invention,
In addition to the effects of the above-described first invention, the two slit-shaped notches that are formed in the facing state with a mutual gap therebetween and open in the same direction are formed, and the support portion is formed outside the mutual gap. Since the support portion is brought into contact with the wire outside the mutual gap of the slit-shaped notches, there is an effect that the connection portion between the wire and the contact can be protected against an external force acting on the wire.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of a pressure contact according to the present invention.

FIG. 2 is a vertical cross-sectional view showing the press contact of FIG.

FIG. 3 is a perspective view showing a second embodiment of the pressure contact according to the present invention.

FIG. 4 is a perspective view showing a conventional example of a pressure contact.

FIG. 5 is a perspective view showing an example of use of the pressure contact shown in FIG.

[Explanation of symbols]

10 ・ 20 ・ ・ ・ ・ Pressure contact, 11 ・ 23 ・ ・ ・ ・ Slit-shaped notch, 12 ・ 24 wire, 13 ・ 22 ・ ・ ・ ・ Support part, G ・ ・ ・ ・ Mutual gap

Claims (2)

[Claims] 1. A wire (12 ..) in a slit-shaped notch (11. 23.) formed of a thin metal plate and provided at an end thereof.
24) A pressure contact (10, 20) for cutting the coating at the edge portion of the slit-like cutout to make it conductive with the wire by being pressed and inserted at an intermediate position of 24), and in the vicinity of the slit-like cutout. A pressure contact, characterized in that it is integrally provided with a support portion (13, 22) that is bent after the wire is inserted and brought into contact with the surface of the wire from the opening side of the slit-shaped notch. 2. Two slit-shaped notches which are formed in an opposed state with a mutual gap (G) therebetween and open in the same direction,
The pressure contact according to claim 1, wherein a support portion is formed outside the mutual gap.