JPH0622929Y2 - Electrical connector - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric connector for connecting covered electric wires to each other. More specifically, the present invention relates to a press-fit type electric connector for electrically connecting covered electric wires by press-fitting a contact into a connector body. It is about connectors.

[0002]

BACKGROUND OF THE INVENTION Conventional press-fit electrical connectors often consist of an insulative body having a hole or groove for receiving a coated wire and a conductive metal contact member that can be pushed into the body. . These techniques are disclosed in, for example, Japanese Patent Publication No. 53-11677 and Japanese Patent Publication No. 52-24229.
No. In this conventional technique, the coated electric wire is electrically connected to each other by inserting the coated electric wire into the receiving hole or groove of the housing and press-fitting the metal contact member, and at the same time, a mechanical fastening effect of the coated electric wire is expected. ing. However, the locking force of the contact member alone cannot sufficiently cope with the accidental pulling force applied to the covered electric wire, and there is a possibility that poor contact or disconnection of the electric wire may occur. Further, in the above-mentioned prior art, the holes or grooves for receiving the covered electric wires are arranged in parallel, and the covered electric wires to be connected are accommodated side by side.
Therefore, the housing of the connector is wide and large. Also, such a connector is convenient for branching a branch line from a trunk line, but is not suitable for connecting wires in a straight line. Also, as a means for connecting electric wires in a straight line, for example, there is one disclosed in Japanese Utility Model Publication No. Sho 63-28526, in which the operating body for connecting the covered electric wires and the metal connecting blade are made of different members. Since it is incorporated into the insulating housing, the structure is complicated and the cost is high.

[0003]

Therefore, the present invention was devised in consideration of the above problems, and it is possible to easily connect the covered electric wires to each other in a straight line simply by pushing in the contact. However, the main object of the invention is to provide a press-fitting type electrical connector which can reliably prevent the covered electric wire from being pulled out during use with a simple structure and at a low cost.

[0004]

In order to achieve the above-mentioned object, an electric connector according to the present invention is provided with covered electric wire insertion holes (1a), (1a) and directions in which openings thereof are opposite to each other. Insulation housing (1) provided with at least a pair of left and right covered electric wire insertion tube portions (1b), (1b) arranged on the coaxial line in a state of being directed to the tube portions (1b), (1b), respectively. Inserted insulated wire
(2), a conductive contact (3) held so that it can be pushed into the housing (1) to electrically connect (2), and an insulating cover fixed to the upper surface of the contact (3) (4) and the contactor (3) is arranged in a direction orthogonal to the covered electric wires (2), (2) and has at least a pair of left and right connections having concave grooves (3b) that bite into the covered electric wires. Equipped with blade plates (3a), (3a), when this connecting blade plate is pushed into the housing (1), the sheath of the coated electric wire is torn to electrically connect the core wire (2a) and the contact (3). The housing portion (1b), (1b) of the housing (1) is formed to be deformable with respect to external pressure, and the insertion hole (1a), ( The inner surface of 1a) is provided with a crimping inner cylinder (8) made of a plastically deformable metal material, and further, when the contact (3) is pushed into the insulating cover (4), the housing (1 ) To maintain the pushing posture A stopper (5) that is formed with an engaging portion (4a) that controls the insertion of the covered electric wire in the center of the inside of the housing (1).
Is provided.

[0005]

In the electric connector constructed as described above, as shown in FIG. 3, the covered electric wires (2), (1a) are inserted into the insertion holes (1a), (1a) of the left and right cylindrical portions of the housing (1), respectively. After inserting 2),
As shown in FIG. 4, the contactor (3) may be pushed into the housing (1) with a fingertip or an appropriate tool. As a result, as shown in FIG. 5, the connection blade plates (3a), (3a) of the contact (3) are covered with the covered electric wire (2),
The core wires (2a), (2a) and the contact (3) are electrically connected by breaking the coating of (2). After that, as shown in FIG. 6, a crimping tool such as pliers is crimped from the outside of the cylindrical portions (1b), (1b) to deform the crimping inner cylinder (8) into the covered electric wire (2). As a result, the covered electric wire is strongly pressed and held on the inner surface of the tubular portion.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. In the first embodiment of the present invention shown in FIGS. 1 to 5, reference numeral (1) indicates a housing integrally molded with an insulating material. This housing (1) has a covered wire insertion hole (1
It has a pair of left and right covered electric wire insertion cylinders (1b), (1b) which have a) and (1a) and are arranged on the coaxial line with their openings directed in opposite directions. Further, in the central part of the housing (1), in order to electrically connect the covered electric wires (2) and (2) inserted into the cylindrical parts (1b) and (1b), respectively, downward from the upper surface of the housing. A contact (3) made of a conductive material such as a metal held so as to be pushed in is provided. This contactor (3) is arranged in a direction orthogonal to the coated electric wires (2), (2) and has a pair of left and right connection blade plates (3a), (3a), each having a groove (3b) that bites into the coated electric wire. 3a), and when this connecting blade is pushed into the housing (1), the sheath of the coated electric wires (2), (2) is torn and the core wire (2a) and the contact (3) are electrically connected. Are configured to connect to each other.

Further, the insulating cover (4) of the contactor (3) engages with the housing (1) when the contactor (3) is pushed in, and the engaging portion (4a) holds the pushing posture. Is provided.
The engaging portion (4a) shown in the embodiment is formed by a convex claw and is formed so as to engage with the engaging groove (1c) formed on the side surface of the housing (1). In addition, this insulation cover (4)
Is a thin strip hinge (6) as shown in FIGS. 6 and 7.
They may be integrally connected by means of.

Further, at least the cylindrical portion of the housing (1)
(1b) and (1b) are made of a thin or flexible material so that they can be deformed by external pressure, and the insertion hole (1
A crimping inner cylinder (8) made of a plastically deformable metal material is provided on the inner surfaces of a) and (1a).

A stopper (5) for restricting the insertion of the covered electric wires (2), (2) from the left and right is provided in the central part of the inside of the housing (1).
Is provided, whereby the tip of the covered electric wire can be pushed in until it comes into contact with the stopper (5) to easily insert and hold it in an appropriate position. Further, as shown in FIGS. 7 and 8, if the hook (7) is extended upward from the central back surface of the housing (1), this electric connector can be hooked at a predetermined position of the electric device. It is convenient for

In the present invention, if the housing (1) is allowed to increase in size to a certain extent, a third housing as shown in FIG. 10 may be used for the housing (1) of the electric connector shown in the above embodiment. The tube part (11a) is connected in a T shape, or as shown in FIG.
It is also possible to add a fourth cylinder part (11b) to form a cross shape as shown in 1, and to connect three or four covered electric wires in a T shape or a cross shape. Is. In this case, the number of connecting blade plates (3a) of the contactor (3) is formed according to the number of cylindrical portions. For example, in the case of the cross-shaped configuration of FIG. 11, if the connecting blade plates (3a) of the contactor (3) are formed in the form of forming each side wall of the quadrangular dome as shown in FIG. In the case of the T shape shown in FIG. 10, one of them may be omitted.

Although the representative embodiment of the present invention has been described above, the present invention is not necessarily limited to the structure of the above-mentioned embodiment, and is within the scope of having the constituent features of the present invention and being effective. Of course, it can be implemented by appropriately changing it.

[0012]

EFFECTS OF THE INVENTION Since the present invention is constructed as described above, the covered wires are inserted into the insertion holes of the left and right cylindrical portions of the housing (1), and the contactor (3) is attached to the housing (1). The left and right covered wires can be easily electrically connected by simply pushing them into the housing.
At least the tubular portion (1b) of (1), (1b) is formed of a thin or flexible material so that it can be deformed by external pressure, and the inner surface of the insertion holes (1a), (1a) of the tubular portion. Is equipped with a crimping inner cylinder (8) made of a plastically deformable metal material,
After pushing in the contact piece, use a suitable crimping tool to
By crimping from the outside of b) and deforming the crimping inner tube (8) so as to bite into the covered electric wire (2), the covered electric wire can be strongly crimped and held on the inner surface of the tubular part, and the electric wire in use It is possible to prevent the occurrence of poor continuity and the like. Further, according to the present invention, since the left and right cylindrical portions (1b), (1b) are arranged in a long and thin shape on the coaxial line, they can be formed in a small size and light weight, which is convenient for connecting electric wires in a narrow space. (4) housing when contact (3) is pushed
Since the engaging portion (4a) that is engaged with (1) and holds the pushing posture is provided, it is possible to reliably prevent contact failure (contact failure, etc.) from occurring when the contactor (3) floats up during use, in addition,
Since the stopper (5) for restricting the insertion of the covered electric wire is provided in the center of the inside of the housing (1), the covered electric wire can be always inserted in an appropriate position.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of an electrical connector according to the present invention.

FIG. 2 is a cross-sectional view of the electric connector shown in FIG.

FIG. 3 is a first process of using the electric connector shown in FIG.
It is sectional drawing which shows a step.

FIG. 4 is a second process of using the electric connector shown in FIG.
It is sectional drawing which shows a step.

5 is a sectional view taken along line AA in FIG.

6 is a cross-sectional view showing a final stage of a process of using the electric connector shown in FIG.

FIG. 7 is a perspective view showing another embodiment of the electrical connector according to the present invention.

8 is a cross-sectional view of the electrical connector shown in FIG.

FIG. 9 is a perspective view showing another embodiment of the contact according to the present invention.

FIG. 10 is a plan view showing another embodiment of the electrical connector according to the present invention.

FIG. 11 is a plan view showing still another embodiment of the electric connector according to the present invention.

[Explanation of symbols]

 (1) Housing (1a) Insertion hole (1b) Cylindrical part (2) Coated wire (2a) Core of coated wire (3) Contact (3a) Connecting blade (3b) Groove (4) Cover body (4a ) Engagement part of cover body (5) Stopper (8) Inner cylinder for crimping

Claims (1)

[Scope of utility model registration request] 1. At least a pair of left and right covered electric wire insertion cylinders (1b) which are provided on the coaxial line with the covered electric wire insertion holes (1a), (1a) and whose openings are oriented in opposite directions. ),
Insulating housing (1) provided with (1b) and said housing (1) for electrically connecting covered wires (2), (2) respectively inserted into said tubular parts (1b), (1b) The contactor (3) held so that it can be pushed in, and an insulating cover (4) fixed to the upper surface of the contactor (3), the contactor (3) is a covered electric wire (2),
At least a pair of left and right connecting blades arranged in a direction orthogonal to (2) and having a groove (3b) that bites into the covered electric wire
(3a), (3a), when the connecting blade is pushed into the housing (1), the sheath of the coated electric wire is torn to electrically connect the core wire (2a) and the contact (3). Is configured as
Furthermore, the cylindrical portions (1b), (1b) of the housing (1) are formed to be deformable with respect to external pressure, and the insertion hole (1
A crimping inner cylinder (8) made of a plastically deformable metal material is provided on the inner surfaces of a) and (1a), and the insulating cover (4) is further provided.
An engaging portion (4a) is formed on the contact (3), which engages with the housing (1) when the contact (3) is pushed in and holds the pushing posture.
An electrical connector in which a stopper (5) for restricting the insertion of a covered electric wire is provided in the center of the inside of the housing (1).