JP3107121B2 - Lock structure for flat wires and connectors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock structure between a flat electric wire used for wiring of electronic equipment and a pluggable connector.

[0002]

2. Description of the Related Art In general, a so-called flat electric wire in which a plurality of conductors are arranged in parallel and formed into a tape shape with an insulator is used for wiring of electronic equipment. When this flat electric wire is connected to a pluggable connector used for connection to a printed circuit board or the like of an electronic device, the conductor of the flat electric wire is extremely thin and easily cut, as shown in FIGS. 7 and 8. A connection structure using a plastic plate for reinforcement has been considered.

In FIGS. 7 and 8, reference numeral 1 denotes a connector having an electric wire insertion hole 2 and has a built-in spring-like contact 3 connected to a printed circuit board or the like. Reference numeral 5 denotes a terminal portion of the flat electric wire 4 inserted into the electric wire insertion hole 2. The end portion of the electric wire 4 is stripped of the insulator to expose the conductor 6. A plastic plate 7 having a length is closely attached.

In the connector having such a structure, the insertion state is maintained only by the contact pressure of the spring-shaped contact 3, so that the terminal portion 5 of the flat electric wire 4 is easily removed from the connector 1. As shown in FIG. 9, a flat wire 4 having notches 8 provided at both edges of a terminal portion 5 'of the flat wire 4 to which a plastic plate 7 is adhered, or a terminal portion of the flat wire 4 also shown in FIG. A hole 9 is provided in the surface between the 5 ″ conductors 6 so that the terminal portions 5 ′ and 5 ″ of the flat wire are connected to the connector 1
A lock structure has been considered so that it cannot be easily removed from the device.

However, these terminal units 5 'or 5 "
In order to lock the connector in the connector, a pin or a protrusion which can be freely inserted and removed corresponding to the notch 8 or the hole 9 is required, and the structure of the terminal portions 5 ', 5 "and the connector is disadvantageously complicated and large. is there.

As shown in FIGS. 11 and 12,
A rectangular projection 10 and a concave groove 12 which are fitted to each other on a plastic plate 11 adhered to an inner wall surface on one side of the housing of the connector 1 and a terminal portion of the flat electric wire 4;
Protruding partition 13 is provided on the inner wall surface on the opposite side of the housing,
A structure has been proposed in which the flat wire 4 is locked so that it cannot be easily removed from the connector 1 (Japanese Patent Laid-Open No. 56-7 / 1981).
No. 9871).

However, in any of the above proposals, a reinforcing holder made of a plastic plate or the like needs to be adhered to the end of the flat electric wire, and the reinforcing holder is attached to the end of the flat electric wire. There are problems such as low productivity due to the complicated fixing step and poor workability of assembling to the connector.

[0008]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and it is easy to make a flat electric wire end without attaching a reinforcing holder to the flat electric wire end. It is an object of the present invention to provide a connection structure between a flat electric wire and a connector, wherein the connection portion can be connected to the connector and the connector can be securely locked.

[0009]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a connector having a connector housing for accommodating a terminal and a locking lid which can be opened and closed, and a flat plate having a locking hole at a terminal end. A lock projection is provided inside the locking lid, the locking lid is opened, and the conductor of the flat wire is placed on the conductor connection portion of the terminal in the connector housing. After the locking projection of the locking lid is inserted into the locking hole, the locking lid is closed, and the locking hole of the flat electric wire and the locking projection of the locking lid are brought into close contact with each other so that the connector and the flat electric wire can be connected to each other. Is configured to be locked.

It is preferable that the terminal accommodated in the connector housing has a conductor connecting portion provided with a hole.

[0011]

According to the present invention, the locking cover of the connector housing is opened to place the conductor at the terminal end of the flat wire on the conductor connecting portion of the terminal in the connector housing, and to engage with the lock hole of the flat wire. By closing the locking lid after inserting the locking projection of the stopper lid, the flat electric wire is appropriately moved as the leading edge of the locking projection gradually enters the locking hole, and the locking projection and the locking hole come into close contact with each other. Therefore, the flat electric wire is firmly locked to the connector. Therefore, reliable locking can be achieved without bringing a reinforcing plastic plate or the like into close contact with the end portion of the flat electric wire. Further, the conductor of the flat electric wire is pressed between the inside of the locking lid and the conductor connection portion of the terminal by the elastic pressure of the conductor connection portion of the terminal, and the electrical connection is strengthened.

Further, by providing a hole in the conductor connecting portion of the terminal built in the connector housing, the contact area with the conductor of the flat electric wire can be increased, and the reliability of the connecting portion can be improved.

[0013]

FIG. 1 shows a connector 1 according to an embodiment of the present invention.
FIG. 4 is a perspective view showing a flat wire 4 and a flat electric wire 15. The connector 14 has a plurality of terminal accommodating chambers 17 inside a box-shaped connector housing 16 and a locking lid 1 that can be opened and closed.
8 is provided. As shown in FIG. 2, a female terminal 19 having a conductor connecting portion 19a bent in a V-shape is accommodated in the terminal accommodating chamber 17, and the bottom wall 1 of the connector housing 16 is accommodated therein.
An electric wire mounting portion 16b is provided at the end of 6a.

The locking lid 18 has a locking projection 20 provided with an arrowhead-shaped locking hook 21 at the tip thereof on the inner side 18a thereof, and a thin flexible hinge portion with respect to the upper wall 16c of the connector housing 16. 18b is connected openably and closably.

In the bottom wall 16a of the connector housing 16, a locking hole 2 corresponding to the locking hook 21 of the locking projection 20 is formed.
2 are provided, and locking projections 23 are provided at both ends of the electric wire mounting portion 16b.
Is provided.

The flat electric wire 15 is peeled at the end of the insulating coating 24 to expose the conductor 25, and is provided on both edges of the insulating coating 24 in correspondence with the locking projections 23 of the electric wire mounting portion 16 b of the connector housing 16. A locking hole 27 is provided to penetrate the insulating cover 24 so as to insert the lock projection 20 and lock the connector housing 16 when the locking cover 18 of the connector housing 16 is closed. I have.

As shown in FIG. 3, the lock projection 20 is formed in a plate shape parallel to the insertion direction of the flat electric wire 15 inside the locking cover 18 so as to facilitate insertion into the lock hole 27 of the flat electric wire 15 and The width of the joint portion with the locking lid 18 is the widest so that the locking lid 18 is in close contact with the lock hole 27 with the locking lid 18 closed, and the width gradually decreases toward the locking hook 21 provided at the distal end. Curved leading edges 20a, 20a 'are provided.

In order to connect the flat wire 15 to the terminal 19 accommodated in the connector housing 16, first,
As shown in FIG. 2, the locking lid 1 of the connector housing 16
8, the conductor 25 of the flat electric wire 15 is placed on the conductor connecting portion 19a of the terminal 19, and the electric wire placing portion 16b
The flat wire 15 is temporarily locked by engaging the locking hole 26 of the flat wire 15 with the locking projection 23 of the flat wire 15.

Next, the locking cover 18 of the connector housing 16 is closed in the direction of the arrow, and the locking hook 21 provided at the distal end of the locking projection 20 is inserted into the locking hole 27 of the flat electric wire 15 as shown in FIG. . And as shown in FIG.
By completely closing the locking cover 18, the locking hook 21 of the locking projection 20 is inserted into the locking hole 22 of the connector housing 16.
To engage with the bottom wall 16a.

At this time, with the closing operation of the locking cover 18, the leading edge 2 of the lock projection 20 with respect to the lock hole 27 is formed.
0a, 20a ', the flat electric wire 15 slides on the electric wire mounting portion 16b in the direction of the arrow, and the lock projection 20a.
When the widest root portion of the lock projection 20 is inserted into the lock hole 27, the lock projection 20 comes into close contact with the periphery of the lock hole 27,
The flat electric wire 15 is securely locked to the connector housing 16.

On the other hand, the conductor 25 of the flat electric wire 15 is pressed between the conductor connection portion 19a and the inside 18a of the locking cover 18 by the elastic pressure of the conductor connection portion 19a of the terminal 19, so that the electrical connection is ensured. Done in

FIG. 6 shows a terminal 2 according to the second embodiment.
It is a perspective view which shows the conductor connection part of No. 8. Conductor connection part 2
9 has a hole 29a formed therein. When the conductor 25 of the flat electric wire 15 is connected to the terminal 28, the contact area between the conductor 25 and the conductor connection portion 29 is increased by inserting the conductor 25 into the hole 29a, so that the contact resistance is reduced. It is suitable for connection corresponding to a large current such as a power circuit.

Further, the oxide film formed on the surfaces of the conductor 25 and the conductor connection portion 29 is peeled off by the rubbing action when the conductor 25 is inserted into the hole 29a, which helps to improve the reliability of the electrical connection.

[0024]

According to the present invention, when the locking cover provided on the connector housing is closed, the lock projection provided on the locking cover and the lock hole formed on the flat wire are brought into close contact with each other, and the flat wire is connected to the connector. Since it is firmly locked to the housing, it can be securely locked without making a reinforcing plastic plate adhere to the end of the flat wire, and the processing of the flat wire end and connection to the connector are simplified. , Productivity and reliability are significantly improved. In addition, the conductor of the flat electric wire is pinched between the inside of the locking lid and the conductor connection portion of the terminal by the elastic pressure of the conductor connection portion of the terminal, and the electrical connection is strengthened.

Further, by providing a hole in the conductor connecting portion of the terminal built in the connector housing, the contact area with the conductor of the flat electric wire is increased, so that it is possible to cope with a large current circuit, and at the same time, it is possible to cope with a large current circuit. There are advantages such as improvement in reliability.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a connector and a flat electric wire according to an embodiment of the present invention.

FIG. 2 is a longitudinal sectional view showing a state where a flat electric wire is connected to the connector of FIG. 1;

FIG. 3 is an enlarged front view of a lock projection of FIG. 1;

FIG. 4 is an explanatory view of a step of connecting and locking a flat electric wire to the connector of FIG. 1;

FIG. 5 is an explanatory diagram showing a state in which locking between the connector and the flat electric wire in FIG. 4 is completed.

FIG. 6 is a perspective view of a conductor connecting portion of a terminal according to the second embodiment.

FIG. 7 is an explanatory view showing a conventional connection structure between a flat electric wire and a connector.

FIG. 8 is a perspective view showing a terminal portion of the flat electric wire of FIG. 7;

FIG. 9 is a perspective view showing a terminal portion of another conventional flat electric wire.

FIG. 10 is a perspective view showing a terminal portion of another conventional flat electric wire.

FIG. 11 is an explanatory view showing another connection structure between a conventional flat electric wire and a connector.

FIG. 12 is a perspective view of the flat electric wire of FIG. 11;

[Explanation of symbols]

 14 Connector 15 Flat wire 16 Connector housing 18 Locking lid 19 Terminal 19a Conductor connection part 20 Lock projection 27 Lock hole 28 Terminal 29 Conductor connection part 29a Drilled hole

Claims (2)

(57) [Claims] 1. A connector comprising a connector housing for accommodating a terminal and having a locking lid which can be opened and closed, and a flat electric wire having a locking hole at a terminal end, wherein a locking projection is provided inside the locking lid. Opening the locking lid, placing the conductor of the flat wire on the conductor connecting portion of the terminal in the connector housing, and inserting the lock projection of the locking lid into the lock hole of the flat wire, The flat wire and the connector, wherein the connector and the flat wire are locked by closing the locking cover and bringing the lock hole of the flat wire into close contact with the lock projection of the locking cover. Lock structure. 2. A terminal accommodated in a connector housing,
The flat wire and connector locking structure according to claim 1, further comprising a conductor connection portion provided with a hole.