JP2001185284A - Electrical connector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrical connector having a contact which can be easy to be dealt with, and there are no cutting or mal-connecting in its lead wire, and can carry out connection corresponding to various kinds of lead diameter size. SOLUTION: In an insulating housing 11 comprising a housing body 12 that holds the contacts 30, an attachment body 13 attached in the housing body 12, and a cable C connected to a connecting section 32 of the contact 30 by the attachment to the housing body of the attachment body, where the connecting section 32 is positioned to an open section 12B which is exposed in the attachment body 13 before being attached, and the attachment body 13 is made to press the load wire of the cable to the connection section 32 of the contact by being attached to the open section 12B of the housing. At least either the attachment body 13 or the connection section 32, is provided with elastic sections 20B, 23, and 24, which bring a suppression power by the press.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of electrical connectors, and more particularly to an electrical connector in which an insulating housing has a housing body and a mounting body.

[0002]

2. Description of the Related Art Such an electrical connector is disclosed in
What is disclosed in -35771 is known. This known connector is shown in FIG.
As in 3, the insulating housing of the connector 50 has a housing main body 51 and a mounting body 52. This mounting body 5
Numeral 2 is formed integrally with the housing main body 51 via a flexible hinge portion 53, and is rotatable with respect to the housing main body 51.

[0003] On the housing body 51 of the connector 50, a pressure contact terminal 54 as an L-shaped plate-like contactor is mounted. As shown in FIG. A groove 55A is formed. The groove width of the press contact groove 55A is set slightly smaller than the diameter of the core bundle C1 of the cable C to be connected.

A guide hole 56 for inserting the cable C is formed in the mounting body 52, and two guide grooves 57, 58 are formed so as to cross the guide hole 56. The upright portion 55 of the press contact terminal 54 enters one guide groove 57, and a plate-like holding member 59 is guided in the other guide groove 58.

[0005] In use, the cable C is passed through the guide hole 56 in a state as shown in FIG. 13, and then the mounting body 52 is rotated in the direction of arrow A to be fixed to the housing body 51. When the mounting body 52 rotates, the cable C is pushed into the press contact terminal 54 and the press contact groove 55A.
Of the core wire bites into the sheath of the cable, so that the core wire bundle C1 and the press contact terminal 54 are press-connected. The holding member 59 holds the outer skin of the cable C in the groove 59A.

[0006]

However, it is difficult for an electrical connector having a press contact terminal having the above-described press contact groove to cope with conditions such as the size of a cable core bundle.

In the press-connecting by the press-contact groove, the groove width of the press-contact groove is set to be slightly smaller than the diameter of the core bundle in which a thin material is bundled, but the optimum range of the value is extremely narrow. May be insufficient or pressure welding may not be performed, or a core wire that is too small may be cut, and in some cases, pressure welding may not be possible. Also, when the core wire is a single wire, the core wire diameter is large, so there is not much fear of cutting due to the groove width being too small,
Pressing may not be possible due to excessive groove width. this is,
Since the core diameter does not change even if the core wire is compressed, this tendency is greater than in the case of the core wire bundle in which the fine wires are bundled.

[0008] Furthermore, this known connector cannot cope with a cable having a slightly different cable dimension, that is, a diameter of a core bundle even if it is slightly different.

In view of the foregoing, it is an object of the present invention to provide an electrical connector which can prevent a situation where a core wire is damaged, which is incompletely or incompletely pressed, and which can sufficiently cope with a slight change in the core wire diameter. And

[0010]

SUMMARY OF THE INVENTION An electrical connector according to the present invention has an insulating housing having a housing body for holding contacts and a mounting body attached to the housing body. The contact has a connecting portion for connecting with a contact of a mating connector and a connecting portion for connecting a cable. Then, the cable is connected to the connection portion of the contact by attaching the attachment body to the housing body.

In the electric connector, according to the present invention, the connection portion of the contact is located at an open portion of the housing that is exposed before mounting of the mounting member, and the cable core can be placed on the connection portion. I have. The mounting body presses the core wire of the cable to the connection part of the contact by mounting the housing to the open part. At least one of the mounting body and the connection portion includes an elastic portion that provides an elastic force by the pressing, and performs the pressing with the elastic force.

In the electric connector of the present invention having such a configuration, in use, a core wire for exposing the cable is arranged on the connection portion of the contact located at the open portion of the housing body. Attach the mounting body to the housing body. With this attachment, the core wire is pressed against the connection portion by the elastic portion with elastic pressure and comes into contact, and electrical connection is made.

In the present invention, the housing body and the mounting body are
It can be formed integrally via a flexible hinge.
In this case, the attachment body is rotatable with respect to the housing main body between a release position that allows the arrangement of the cable core wire in the connection portion of the contact and an attachment position that presses the core wire on the connection portion. Has become. In this way, by integrating the housing main body and the mounting body, handling before use is easy, and in use, the mounting body only needs to be rotated, so that the work becomes easy.

[0014] The elastic portion may be provided on the mounting body. In this case, the attachment body may include an attachment body and an elastic member, and the elastic member may form an elastic portion.
As an example, the elastic member is formed of a metallic spring member,
The free end side of the spring portion can repress the core wire on the connection portion. The spring member is made by shaping and bending a metal plate, and can be formed so that the free end side has a flexible tongue shape.

The elastic portion may be a part of the mounting body. In this case, the elastic portion may be formed as a flexible arm extending from the mounting body.

In the present invention, the connection portion of the contact may have a flat surface on which the core wire is arranged, or may have a concave portion or a convex portion formed on the arrangement surface. If the concave portion or the convex portion is formed, the pressed core wire is difficult to come off.

The elastic portion can be provided on the contact without being provided on the mounting body. In this case, since a part of the connection portion of the contact can be elastically deformed, the elastic portion can be provided. A part can be formed.

The connection portion of the contact may have a U-shaped cross section in a plane perpendicular to the longitudinal direction of the cable core wire to be arranged. By doing so, for example, when the core of the cable is made up of a bundle of thin cores, when they tend to escape to the side even when pressed, this can be prevented by the U-shaped side walls on both sides.

When the housing holds a plurality of contacts, and the connecting portions of the contacts are arranged in parallel with each other on the plane of the open portion of the housing body, the connecting portion between the connecting portions is connected to the plane. If a V-shaped groove is formed in the mounting body and the mounting body has a V-shaped projection that enters the V-shaped groove, the core wire on each connection part is the V-shaped of the mounting body. The projection prevents the side from being spread by the pressing, so that the projection is always located on the arrangement surface of the connection portion, and the connection is stabilized.

If a sleeve body capable of being fitted is provided on the outer periphery of the housing body, and if it is possible to rotate the mounting body to the mounting position by fitting the sleeve body, the fitting of the mounting body is performed by fitting the sleeve body. Not only mounting, but also unexpected opening of the mounting body can be reliably prevented, and no locking means is required.

[0021]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 to FIG.
An embodiment of the present invention will be described with reference to FIG.

<First Embodiment> A housing 11 of an electrical connector 10 of the present embodiment shown in FIGS. 1 to 3 is made of an insulating material, and a housing body 12 and a mounting body 1 are provided.
And 3. The housing body 12 has a fitting portion 12A.
And an opening 12B.

The mating portion 12A has a mating surface for mating with a mating connector (not shown) from the front (from the left in FIG. 1A) on its outer surface. A slot-shaped accommodation groove 14 for accommodating the connection portion 31 of the child 30 is formed extending in the front-rear direction, and the accommodation groove 14 communicates with a front opening 15 for receiving a male terminal of a mating connector.

The opening part 12B is connected integrally with the fitting part 12A at the lower part, but is opened upward. As shown in FIG. 1B, the open portion 12B is formed with a plurality of U-shaped grooves 16 opened upward, and the connection portions 32 of the contacts 30 are fitted and held therein. At the side of the opening 12B, there is formed a locking step 17 for performing locking when a mounting body to be described later is mounted.

On the other hand, the contact 30 is formed by punching a metal plate and then bending the metal plate.
1 and a connection part 32, the connection part 31
(A) forms a plate-like surface parallel to the paper surface and has a U-shaped fitting groove 3.
1A is formed, and the male terminal of the mating connector is fitted therein. At the time of the fitting, the male terminal widens elastically and makes elastic contact with the male terminal. The connection portion 32 has a U-shaped cross section as shown in FIG. 1B, and is held in contact with the peripheral wall of the fitting groove 21A. The contact 30 is provided to the housing body 12
It is inserted and attached from the rear, that is, from the open portion 12B to the fitting portion 12A.

In the case of the present embodiment, the mounting body 13 is formed integrally with the housing main body 12 via a flexible hinge portion 18 and is rotatable toward the housing main body 12 at the flexible hinge portion 18. It has become. In the present embodiment, the mounting body 13 includes a block-shaped mounting body main body 19 and an elastic member 20 mounted thereon. The attachment body 19 has a lock arm 19A extending on both sides thereof and a lock claw 19B provided at the tip. The elastic member 20 has a substantially “U” shape as a whole, and
0A and the elastic portion 20B, and is inserted and fixed in the groove 19C of the attachment body 19 at the fixed portion 20A.

As shown in FIG. 2B, in the elastic member 20, the fixed portion 20A has a wide and U-shaped cross section with respect to the tongue-shaped elastic portion 20B. Part 2
0D is engaged with the groove 19C of the mounting body 19. A serrated locking projection 20C is provided on the upper edge of the fixed portion 20A having a U-shaped cross section to bite into the inner surface of the groove 19C to prevent the groove 19C from coming off.

The tongue-shaped elastic portion 20B has elasticity,
The distal end can be bent and displaced in the direction of the fixed portion 20A under external force. The tip is bent downward so as to easily catch the core of the cable during use.

The electric connector 10 according to the present embodiment is used in the following manner. First, as shown in FIG. 1A, the outer sheath of the cable C is peeled off to expose the core wire C1 by a predetermined length. In the present embodiment, the core wire C1 is composed of a bundle of a plurality of thin core wires. Next, the core wire C <b> 1 is arranged in the U-shaped connection part 32 of the contact 30. While maintaining the state in which the core wire C1 is positioned on the connection portion 32, the mounting body 13 is rotated around the flexible hinge portion 18 and attached to the opening portion 12B. As shown in FIG. 3B, this mounting is performed by the lock arm 19A of the mounting body 13.
The locking is completed by the locking claw 19B provided at the tip of the opening portion 12B being locked by the locking step 17 of the opening portion 12B, and the position is secured. In the above mounting step, the elastic portion 20B of the elastic member 20 provided on the mounting body 13 is
2 is pressed elastically on the core wire C1 on FIG.
It is connected like At this time, the distal end of the elastic portion 20B is bent and strongly presses the core wire locally, so that the core wire also bends along this to prevent the core wire from coming off. Thereafter, the male terminal (not shown) of the mating connector is inserted from the front opening 15 and the connecting portion 31 of the contact 30 is inserted.
Connected to

In the present embodiment, various modifications are possible. For example, as shown in FIGS. 4 (A) and 4 (B), the contact 32 has a shape change such as a projection (convex portion) 32A or a concave portion 32B in the connection portion 32, and the core wire pressed by the elastic member is engaged with these. It can be hard to slip out. FIG. 4
If the connection portion is a sharp blade 32C as shown in (C), the connection portion is cut into the sheath of the cable and press-connected to the core wire C1. In this case, there is no need to peel the outer skin and the like.

As shown in FIG. 5, the elastic member of the elastic member is formed by extending the elastic member shown in FIG.
It is also possible to perform the capturing of the core wire at two points by having 0B, or to make the tip of FIG. 2 bend in the opposite direction as shown by the solid line in FIG. As shown by the broken line in FIG. 6, this may be combined with that shown in FIG. 2 so that the core wire holding function and the detachment preventing function are separated from each other.

Further, as shown in FIG. 7, the elastic portion may be an elastic portion 23 formed of a rubber member instead of a spring member. In this case, the shape is not particularly limited.

The elastic portion 20B can be deformed in the width direction (in FIG. 1A, at right angles to the plane of the drawing). For example, as shown in FIG. 8A, if the tip of the elastic portion 20B has an inverted V-shape, the connection portion 32 of the contact does not have to be a U-shape having both side walls as shown in FIG. 1B. The core wire C1 does not escape to both sides due to the inverted V-shape. Alternatively, as shown in FIG. 8B, when the connection part 32 is flat and the tip of the elastic part 20B is convexly curved, this is effective when the core of the cable is a flat plate. Groove 16 of
It is desirable that both side walls are formed at the bottom. Note that the connection portion 32 may not be flat.

<Second Embodiment> In the present embodiment shown in FIG. 9, the attachment body 19 and the elastic portion 24 are integrally formed. In this case, the elastic part 24 is attached to the mounting body 19.
It is formed as a flexible arm portion extending in a “C” shape from the bottom.

In the case where such an elastic portion 24 is provided, FIG.
As in the case of 0, it is also possible to provide both this and the elastic portion 20B of FIG. In this case, it is also possible to separate the functions such that the elastic portion 20B presses the core wire C1 and the elastic portion 24 presses the outer sheath of the cable.

<Third Embodiment> The third embodiment of FIG. 11 shows a modification in which the connecting portion 32 of the contact is flat and the core wire in this case is prevented from escaping to the side.

In this embodiment, the housing body 12 is
V-shaped grooves 25 are formed on both sides of each of the connection portions 32 of the plurality of contacts, and a V-shaped convex portion 26 that fits into the grooves 25 is provided in the mounting body 13. The engagement of the convex portion 26 with the groove portion 25 allows the flat connection portion 32
Escape to the side of the core wire arranged above is prevented.

<Fourth Embodiment> In the above-described embodiment, the elastic portion is provided on the side of the mounting body. However, it can be provided on the side of the housing body.

For example, as shown in the embodiment of FIG. 12, an elastically deformable cut-and-raised portion 32A is provided at the connection portion 32 of the contact mounted on the housing main body, and the cut-and-raised portion 32A of the housing main body 12 is provided. A concave portion 12C that allows deformation is formed in advance. In such a form, even if the attachment body 13 does not have an elastic portion, the core wire C1 pressed by the attachment body 13 bends and deforms the cut and raised portion 32A and receives an elastic reaction force from the cut and raised portion 32A. Will be. Thereby, good contact is obtained.

<Fifth Embodiment> In the above-described embodiment, it is desirable to have a lock means in order to securely maintain the attachment body to the housing body.
As shown by the two-dot chain line in (A), if the sleeve body 27 is provided, the attachment can be reliably maintained without the lock means. The sleeve body 27 is formed so as to surround the entire housing 11, and can be slid from the front and fitted to the housing 11. If the sleeve body 27 is fitted, the mounting body 13
Will not open without the locking means. Furthermore, if the attachment body 13 is opened and the attachment body 13 is slid so as to be fitted when the attachment body 13 is opened, the attachment body 13 is rotated in the closing direction by the sleeve body 27, Connection is completed automatically.

The present invention is not limited to the illustrated embodiment. For example, the attachment body may be formed separately from the housing body, and may be attached to the housing body.

[0042]

As described above, according to the present invention, the core wire is simply pressed against the connection portion of the contact by the force when the mounting body is attached to the housing body, so that the connection is made by a simple operation and the core wire is damaged. However, even if the diameter of the core wire (bundle) changes, it can sufficiently cope with this. As a result, the cost of connection work has been reduced, the usability has been improved by expanding the applicable range of cables,
Connection reliability can be improved.

[Brief description of the drawings]

FIG. 1 shows an electrical connector according to a first embodiment of the present invention;
(A) is a longitudinal cross-sectional view before mounting of the mounting body on a plane including the axis of the cable, and (B) is an IB-IB cross-sectional view in (A).

FIG. 2 shows an elastic member in the connector of FIG. 1;
(A) is a front view, (B) is a IIB-IIB sectional view in (A).

3A and 3B show the completion of the connection of the connector of FIG. 1; FIG. 3A is a longitudinal sectional view of a plane including the axis of the cable; FIG.
FIG. 3 is a sectional view taken along line IIIB-IIIB in FIG.

4 is a partially broken front view showing a modified example of the contact of the connector of FIG. 1, in which (A) is an example, (B) is another example, and (C) is a cross-section showing still another example. FIG.

FIG. 5 is a sectional view showing a modification of the elastic member of the connector of FIG. 1;

FIG. 6 is a front view showing another modification of the elastic member of the connector of FIG. 1;

FIG. 7 is a sectional view showing still another modification of the elastic member of the connector of FIG. 1;

FIG. 8 is a side view of a main part showing still another modification of the elastic member of the connector of FIG. 1, wherein (A) is an inverted V-shape;
(B) is an example of a convexly curved shape.

FIG. 9 is a cross-sectional view of a mounting body showing a second embodiment.

FIG. 10 is a sectional view showing a modification of the one shown in FIG. 9;

FIG. 11 is a cross-sectional view of the connector of the third embodiment taken along a plane perpendicular to the cable axis.

FIG. 12 is a longitudinal sectional view of a connector according to a fourth embodiment.

FIG. 13 is a sectional view of a conventional connector.

FIG. 14 is a perspective view showing terminals of the connector of FIG. 13;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Electric connector 11 Housing 12 Housing main body 12B Open part 13 Attachment body 18 Flexible hinge part 19 Attachment main body 20 Elastic member 20B Elastic part 23 Elastic part 24 Flexible arm part (elastic part) 25 V-shaped groove part 26 V-shape Convex part 27 Sleeve body 30 Contact 31 Connection part 32 Connection part 32A Convex part 32B Concave part C1 Cable core

Claims (13)

[Claims] 1. An insulative housing having a housing body for holding a contact and a mounting body attached to the housing body, wherein the contact is provided with a connecting portion for connecting to a contact of a mating connector and a cable connection. And a connection portion for
When the cable is connected to the connection portion by attaching the mounting body to the housing main body, the connection portion is located at an open portion of the housing that is exposed before the mounting of the mounting body, and the cable core wire is mounted on the connection portion. The mounting body is adapted to press the core wire of the cable to the connection part of the contact by being mounted on the open part of the housing, and at least one of the mounting body and the connection part is the above-mentioned. An electrical connector, comprising: an elastic portion that provides an elastic force when pressed. 2. The housing body and the mounting body are integrally formed via a flexible hinge portion, and the mounting body has a release position enabling a cable core wire to be arranged in a connection portion of a contact, and a connection position. The electrical connector according to claim 1, wherein the electrical connector is rotatable with respect to the housing body between a mounting position for pressing a core wire on the portion. 3. The electrical connector according to claim 1, wherein the elastic portion is provided on the mounting body. 4. The electrical connector according to claim 1, wherein the mounting body comprises a mounting body and an elastic member, and the elastic member forms an elastic portion. 5. The electrical connector according to claim 4, wherein the elastic member is formed of a metal spring member, and a free end side of the spring portion presses a core wire on the connection portion. 6. The spring member according to claim 5, wherein the spring member is formed by shaping and bending a metal plate, and has a flexible tongue at a free end side. Electrical connector. 7. The electrical connector according to claim 3, wherein the elastic portion is a flexible arm portion that can extend from the mounting body as a part of the mounting body. 8. The electrical connector according to claim 1, wherein the connection portion of the contact has a flat surface on which the core wire is arranged. 9. The electrical connector according to claim 1, wherein the connection portion of the contact has a concave portion or a convex portion formed on the surface on which the core wire is arranged. 10. The electrical connector according to claim 1, wherein the elastic portion is formed by a part of a connection portion of the contact being elastically deformable. 11. The connection part has a U-shaped cross section in a plane perpendicular to the longitudinal direction of the cable core wire to be arranged.
An electrical connector according to one of the preceding claims. 12. The housing holds a plurality of contacts, and connection portions of the contacts are arranged parallel to each other on a plane of an open portion of the housing body, and the plane has a V between the connection portions.
The electrical connector according to claim 1, wherein the V-shaped groove is formed, and the attachment body has a V-shaped protrusion that enters the V-shaped groove. 13. The electrical connector according to claim 2, further comprising a sleeve body that can be fitted on the outer periphery of the housing body, and wherein the fitting body can be rotated to the mounting position by fitting the sleeve body.