JPH06168765A - Lock structure for flat cable and connector - Google Patents

Abstract

PURPOSE:To enable a flat cable to be easily attached to a connector, and ensure proper locked state without any need of holding a reinforcement holder close to the end of the cable, regarding a lock structure for a flat cable and a connector capable of being inserted and pulled out, respectively used for wiring electronic equipment. CONSTITUTION:A cable clamping piece 23 with a cable holding claw at one end and a bulge section at the other end, is provided in such a way as capable of freely turning on the inner wall 16b of a housing case 16 externally coupled to a connector housing 15. A flat cable 17 is inserted in the housing case 16 and connected to a terminal 19 in the connector housing 15. Furthermore, the cable holding claw of the cable clamping piece 23 and an engagement hole 26 for the flat cable 17 are coupled to each other and locked.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lock structure for a flat electric wire used for wiring an electronic device and a connector which can be inserted / removed.

[0002]

2. Description of the Related Art Generally, a so-called flat electric wire, in which a plurality of conductors are arranged in parallel and formed in a tape shape with an insulator, is used for wiring electronic devices. When connecting the flat electric wire to an insertable / removable connector used for connecting to a printed circuit board of an electronic device, the conductor of the flat electric wire is very easily cut, and therefore, as shown in FIG. 7 and FIG. 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, which incorporates a spring-shaped contactor 3 connected to a printed circuit board or the like. Reference numeral 5 denotes an end portion of the flat electric wire 4 to be inserted into the electric wire insertion hole 2, in which the conductor 6 is exposed by peeling off the insulator at the tip end of the electric wire 4 and the length of the exposed conductor 6 is equal to or larger than the exposed conductor 6. A plastic plate 7 having a length is closely attached.

In the connector having such a structure, since the inserted state is maintained only by the contact pressure of the spring contact 3, the end portion 5 of the flat electric wire 4 can be easily removed from the connector 1. As shown in FIG. 9, the flat wire 4 having the plastic plate 7 adhered thereto is provided with the cutouts 8 at both ends of the end portion 5 ', and as shown in FIG. A hole 9 is provided on the surface between the 5 ″ conductors 6 so that the end portions 5 ′ and 5 ″ of the flat electric wire are connected to the connector 1
A structure is considered to be locked so that it cannot be easily removed from the.

However, these terminal portions 5'or 5 "
In order to lock the connector in the connector, it is necessary to provide a pin or a protrusion that can freely move in and out in correspondence with the notch 8 or the hole 9, and there is a drawback that the structures of the terminal portions 5 ', 5 "and the connector are complicated and large. is there.

Further, as shown in FIGS. 11 and 12,
A rectangular protrusion 10 and a recessed groove 12 that are fitted to each other on a plastic plate 11 that is in close contact with the inner wall surface of one side of the housing of the connector 1 and the end portion of the flat electric wire 4.
Providing a protruding partition wall 13 on the inner wall surface on the opposite side of the housing,
A structure has been proposed in which the flat electric wire 4 is locked so that it cannot be easily pulled out from the connector 1 (JP-A-56-7).
9871).

However, in any of the above proposals, a reinforcing holder made of a plastic plate or the like needs to be closely attached to the end portion of the flat electric wire, and the reinforcing holder is attached to the end portion of the flat electric wire. Since the fixing process is complicated, the productivity is low, and the workability of assembling the connector is poor.

[0008]

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and the flat wire end can be easily formed without contacting a reinforcing holder with the flat wire end. An object of the present invention is to provide a connection structure between a flat electric wire and a connector that can connect the portion to the connector and can surely lock the connector.

[0009]

In order to achieve the above-mentioned object, the present invention provides a connector having a connector housing containing a terminal and a tubular housing case fitted therein, and a locking hole provided at a terminal end thereof. And a flat electric wire, the connector housing is provided with a locking claw, and the inner wall of the housing case is provided with a wire holding claw at one end and a bulged portion at the other end for rotatably holding a wire clamping piece. The flat wire is inserted into the housing case to engage the locking claw in the connector housing with the locking hole of the flat wire, and the housing case is externally inserted into the connector housing to hold the wire holding piece. It is configured such that the flat electric wire is pressed and locked by the electric wire holding claw.

Further, it is preferable that the terminal built in the connector housing is provided with a conductor connecting portion having a through hole (claim 2).

[0011]

According to the present invention, the flat electric wire is inserted into the housing case, and the engaging claw of the connector housing is engaged with the engaging hole of the flat electric wire, and then the conductor is connected to the conductor connecting portion of the terminal in the connector housing. By placing the conductor of the flat wire and inserting the housing case outside the connector housing, the bulging part of the wire holding piece provided in the housing case will be housed together with the conductor of the flat wire by the elastic force of the conductor connecting part of the terminal. The wire clamp is pressed toward the inner wall of the case, the wire clamp rotates about its support, and the wire holding claw of the wire clamp engages with the locking hole of the flat wire. It is firmly locked with the electric wire mounting portion formed on the wall.
Therefore, it is not necessary to adhere a reinforcing plastic plate or the like to the end portion of the flat electric wire. Further, the conductor of the flat electric wire is pressed between the bulging portion of the electric wire holding piece and the conductor connecting portion by the elastic force of the conductor connecting portion of the terminal, and is surely electrically connected.

Furthermore, by providing a through 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]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a connector 1 according to an embodiment of the present invention.
4 is a perspective view showing a connector housing 15, a housing case 16, and a flat electric wire 17 that form part 4 of FIG.

The connector housing 15 is a box-shaped outer casing 1.
A plurality of terminal accommodating chambers 18 are provided inside 5a, female terminals 19 having conductor connecting portions 19a bent in a V shape are accommodated in the terminal accommodating chambers 18, and electric wires are provided at the ends of the bottom wall 15b. The mounting portion 15c is provided, the locking claws 20 are provided at both ends of the electric wire mounting portion 15c, and the detents 2 are provided on the sides of the outer shell 15a.
1 is provided.

The housing case 16 is a flat wire 1.
7 is inserted into the connector housing 15 so as to be externally inserted into the connector housing 15. The side wall 16a is provided with a locking hole 22 that engages with the detent 21 of the connector housing 15. Then, as shown in FIG. 2, the inner wall 16b is formed with a support projection 16c to rotatably hold the wire holding piece 23.

The flat electric wire 17 has an insulating coating 2 at the end.
4 is peeled off to expose the conductor 25, and locking holes 26 corresponding to the locking claws 20 of the connector housing 15 are provided on both edges.

As shown in FIG. 3, the wire gripping piece 23 is provided with pins 23b and 23b 'as supporting portions at substantially the center of the side end portions 23a and 23a' on both sides, and has a wire holding claw 23c at one end and a flat wire 17. Of the pin 23 in the support hole (not shown) provided in the support protrusion 16c of the housing case 16.
By fitting b and 23b ', they are rotatably attached to the inner wall 16b of the housing case 16.

To connect the flat electric wire 17 to the terminal 19 housed in the connector housing 15, first,
As shown in FIG. 2, the flat electric wire 17 is inserted from the electric wire insertion opening 16d of the housing case 16 to
The exposed conductor 25 of 7 is moved in the arrow direction to move the terminal 19
It is placed on the conductor connecting portion 19a and the locking hole 26 is engaged with the locking claw 20 of the connector housing 15 to temporarily lock the flat electric wire 17.

Next, the housing case 16 is externally inserted into the connector housing 15, the detent 21 of the connector housing 15 is engaged with the locking hole 22 of the housing case 16, and as shown in FIG. 16 and 16 are locked. FIG. 5 is a side view showing a cross section of the inside of the housing case 16 in this state.

At this time, the bulging portion 23d of the wire holding piece 23 provided in the housing case 16 is urged by the conductor connecting portion 31 of the terminal 19 to relieve the conductor 25 of the flat electric wire 17.
At the same time, the wire holding piece 23 is pressed against the inner wall 16b of the housing case 16, the wire holding piece 23 rotates about the pins 23b and 23b ', and the wire holding claw 23c of the wire holding piece 23 is locked to the flat wire 17. Engage with the hole 26,
The flat electric wire 17 is securely locked between the flat electric wire 17 and the electric wire mounting portion 15c of the connector housing 15.

FIG. 6 shows a terminal 2 according to the embodiment of claim 2.
It is a perspective view which shows the conductor connection part 29 of FIG. Conductor connection part 2
The hole 9a is formed in the hole 9. When the conductor 25 of the flat electric wire 17 is connected to the terminal 28, by inserting the conductor 25 into the hole 29a, the contact area between the conductor 25 and the conductor connecting portion 29 is increased, so that the contact resistance is reduced. It is suitable for connections corresponding to large currents such as power circuits.

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

[0023]

According to the present invention, the flat wire is securely locked between the flat wire and the wire mounting portion formed on the bottom wall of the connector housing by the action of the wire gripping piece provided in the housing case, and Only by placing the conductor of the flat wire on the conductor connection part, it is possible to make an electrical connection reliably, so there is no need to closely attach a reinforcing plate holder such as a plastic plate to the end of the flat wire. Processing of the terminal portion and connection work between the flat electric wire and the connector are simplified, and productivity and reliability are significantly improved.

Further, since the contact area with the conductor of the flat electric wire is increased by providing 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, and the reliability of the connecting portion is improved. There are advantages such as improvement.

[Brief description of drawings]

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

FIG. 2 is a side view of FIG. 1, in which the housing case shows a vertical cross section.

FIG. 3 is a perspective view of the wire holding piece of FIG.

FIG. 4 is a perspective view showing a state in which a flat electric wire is connected to the connector of FIG. 1 and assembled.

5 is an explanatory diagram showing a vertical cross section of FIG. 4. FIG.

FIG. 6 is a perspective view of a conductor connecting portion of a terminal showing an embodiment of claim 2;

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.

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 conventional connection structure between a 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 Connector Housing 16 Housing Case 16b Inner Wall 17 Flat Wire 19 Terminal 20 Locking Claw 23 Wire Clamping Piece 23c Wire Holding Claw 23d Swelling 26 Locking Hole 28 Terminal 29 Conductor Connection 29a Hole

Claims (2)

[Claims] 1. A connector comprising a connector housing having a built-in terminal and a cylindrical housing case fitted therein, and a flat electric wire having a locking hole at a terminal end thereof, wherein a locking claw is provided on the connector housing. , An inner wall of the housing case is rotatably provided with an electric wire holding piece having an electric wire holding claw at one end and a bulging portion at the other end, and the flat electric wire is inserted into the housing case to insert the flat electric wire into the connector housing. The locking claw of the flat wire is engaged with the locking hole of the flat wire, and the housing case is externally inserted into the connector housing to press and lock the flat wire with the wire holding claw of the wire holding piece. The lock structure for the flat wire and connector, which is characterized in that 2. A terminal built in a connector housing,
The flat wire and connector locking structure according to claim 1, further comprising a conductor connecting portion provided with a hole.