JPH0969378A - Connector terminal assembly, connector assembly and multi-core connector using this connector terminal assembly - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connector assembly, in which connector terminals are arranged with a pitch at 1/2 of the pitch of a connecting tool for connecting plural connector terminals and plural wires together. SOLUTION: In this connector assembly, a molding resin body 4 is formed with recessed parts 8 having the same shape and projecting parts 7 having the same shape each other with a constant repeated pitch P, and each connector terminal 1 is fixed to a position of the projecting part 7. Consequently, two connector terminal assemblies are unified by fitting the projecting parts 7 of this side in the recessed parts 8 of the mated side, and as a result, arrangement of the connector terminal with a pitch at P/2 can be obtained, and the same effect with the wire connection of the connector terminals with a pitch at P/2 can be obtained by connecting the wires with each connecting device at a pitch P before the unifying, and thereafter, by unifying these two connector assemblies.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for increasing the density of a connector terminal of a multicore connector for a cable attached to the end of a multicore cable and a technique for connecting a cable and an electric wire thereto.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 7, a multi-core connector for a cable has a connector contact 1 at one end and an open barrel 3 for crimping an electric wire at the other end.
Are arrayed at equal intervals P in the direction orthogonal to the longitudinal direction, and a connector terminal assembly is produced by insertion molding or press fitting with a molding resin body 4 which is an insulator, and an open barrel 3 for wire crimping. It has been practiced to place the stripped electric wire conductor on the wire and sandwich it from above and below with a crimping tool as shown in FIG. 8 to apply pressure to crimp the electric wire to the open barrel 3.

The crimping tool of FIG. 8 has two parts, the anvil assembly 13 on the bottom and the crimper 12 on the top. The anvil assembly 13 is provided with a plurality of anvil portions 11 (four in FIG. 8) that project upward and that have an upper end portion that is a curved concave portion. The upper crimper 12 is formed with a concave portion upward so as to correspond to each anvil portion 11, and its shape becomes slightly narrower as it goes upward and becomes rounded inward at the upper part, so it is just a double peak. It has a shape. This is called the crimper section.

In crimping, the lower portion of the open barrel 3 on which the electric wire to be crimped is placed is placed on the anvil portion 11 and the crimper 12 is pushed down from above. As a result, the tip ends of the V-shaped blades of the open barrel 3 come together so as to be rounded according to the curve of the crimper portion 10, and as a result, the electric wires are wrapped and tightened as shown in the two right lines in FIG. 7. Thus 1
By performing the crimping operation once, the open barrel electric wires are crimped simultaneously for the number of pairs of the anvil portion and the crimper portion of the crimping tool. FIG. 9 is a perspective view showing a state in which five electric wires are crimped and connected to an open barrel for crimping.

[0005]

However, the following problems have arisen in the above-mentioned conventional techniques. In recent years, with the increase in the number of signal inputs and outputs in electronic devices, there is a tendency toward high density and multi-core in component mounting, especially in connectors, and the number of cores is increasing and the contact arrangement pitch is required to be smaller. . As a result, FIG.
The pitch of the anvil part 11 and the crimper part 10 of the crimping tool must be narrowed in accordance with the pitch between the contacts, but the crimper part 10 is necessary for the open barrel to enter there and be crimped and deformed. Since there is a need for a certain width, there is a limit to narrowing the interval.

Further, narrowing the pitch of the crimper portion 10 reduces the thickness of the partition wall between the adjacent crimper portion 10 and reduces the strength of the crimper itself, thus narrowing the interval of the crimper portion. Has a limit, and therefore there is a problem in that there is a restriction even if the arrangement pitch of the connector terminals in the connector terminal assembly is made small to achieve high density.

In view of the above-mentioned problems of the prior art, the object of the present invention is to achieve high density of the connector terminals even if there is the above-mentioned restriction in reducing the interval between the crimper portions of the crimping tool. (EN) Provided are a connector terminal assembly, a connector assembly using the same, and a multi-core connector.

[0008]

A connector terminal assembly of the present invention, a connector assembly using the same, and a multi-core connector have the following means and configurations in order to achieve the above object. First, the connector terminal assembly is an insulator in which convex portions and concave portions of the same shape are alternately formed in the connector terminal arrangement direction at a constant repetition interval P, and the two convex portions of the same insulator are faced to each other. The central part of each connector terminal penetrates through the center of the width in the arrangement direction of each convex part of the insulator, which can be integrated by fitting the convex parts of each other into the concave part of the other The open barrels of are oriented in the same direction orthogonal to the connector terminal arrangement direction.

Next, the connector assembly has an integral structure in which the two connector terminal assemblies to which the electric wires are connected are fitted in the recesses of the mating parts with each other.
The connector terminal interval is P / 2.

Next, the multi-core connector is characterized in that it can be easily obtained by putting a plurality of the connector assemblies together into a connector housing.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The embodiment of the present invention is carried out as a form of a multi-core connector which is attached to the tip of a multi-core cable regardless of whether the contact with the counterpart connector is a socket contact or a pin contact. It

[0012]

Embodiments of the present invention will be described below with reference to the drawings using embodiments. FIG. 1 is a perspective view of an embodiment of the connector terminal assembly of the present invention. Reference numeral 1 denotes a connector terminal, the tip of which is a connector contact 2 and the rear end of which is an open barrel 3 for electric wire connection, and an electric wire is crimped to form an electric wire connection portion 6. Becomes In Fig. 1, the left side shows the state where the electric wire is connected.
It is shown in the figure. Although FIG. 1 shows the case where the number of connector terminals 1 is 5, the number may be more.

Reference numeral 4 denotes a molded resin body, in which convex portions 7 and concave portions 8 having the same shape are alternately formed along the arrangement direction of the connector terminals 1, and the convex portions 7 and the concave portions 8 are formed so as to repeat at a repeating interval (pitch) P. There is. This shape has an integrated structure when the two are fitted with the concave and convex facing each other. A step 14 is provided on the contact surface of the convex portion of the concave portion to prevent it from coming off.

The central portion of the connector terminal 1 is provided with the respective convex portions 7
1. The open barrel 3 of each connector terminal 1 extends in the direction orthogonal to the connector terminal arrangement direction, that is, faces upward in FIG. The connector terminals can be fixed to the molded resin body 4 by a known technique such as insertion molding or press fitting. The arrangement pitch of the connector terminals 1 thus arranged is also P.

In the connector terminal assembly thus formed, each open barrel 3 is placed on the anvil portion 11 of the crimping tool shown in FIG. 8 and the stripped wire end portion is placed on each open barrel 3 and the crimper 12 is attached. By pressing down and applying pressure, a plurality of electric wires are crimped at once. That is, the electric wires are connected to all the open barrels 3 in FIG. 1 like the left end.

FIG. 2 is a perspective view of the same as FIG. 1 but turned upside down by turning it over. When the concave portion 8 and the convex portion 7 are fitted to each other by stacking the one shown in FIG. 2 on the one shown in FIG. 1, the molded resin bodies 4 are integrally joined and the arrangement pitch of the connector terminals 1 is just P / 2. This is because the mating connector terminals have just come into the middle of the connector terminals arranged at the pitch P.

In this case, the connector contact 2 is
It may not be a perfect horizontal straight line but may be staggered, but if that does not cause a problem, it can be used as it is.If it is necessary to arrange it in a horizontal straight line, crank it in advance at the center of all connector terminals. It is enough to bend to the axis position for displacement. Therefore, two pieces are prepared by crimping the electric wire with the crimping tool of FIG. 8 to all the open barrels 3 of the connector terminal assembly of FIG.
When they are fitted to each other, a connector assembly having a connector terminal arrangement pitch of P / 2 as shown in FIG. 3 is obtained.

That is, as a result, a connector assembly crimped and connected at a pitch of ½ of the pitch of the crimper portion 10 of the crimping tool shown in FIG. 8 is realized. Note that FIG. 4 shows the locked state of the step 14 for preventing slipping off when the convex and concave portions of the two connector terminal assemblies are fitted together.

Next, the case of connecting a ribbon-shaped multicore cable to the connector assembly of the present invention will be described. FIG. 5 is a diagram showing the procedure. (A) is a side view of the connector terminal assembly 20 and the ribbon cable 15,
First, remove the insulating coating from the tip of the ribbon cable 15,
Further, each piece is individually separated to a predetermined length, and the pieces are alternately flattened one by one and the pieces are bent upward. In (b), the tip of the flattened group is shown in Figure 1.
Place it on the open barrel 3 of the connector terminal assembly, and crimp it with the crimping tool shown in FIG.

In (c), the connector terminal assembly 20
With the ribbon cable attached, turn the entire ribbon cable 15 inside out,
This time, the crimped connector terminal assembly 20 is pushed and bent upward, and the portion which has been pushed and bent above the ribbon cable in (a) and (b) is flattened and another is prepared.
The connector terminal assembly 20 having the structure shown in FIG.

In (d), the connector terminal assembly 20 which has been pushed and bent upward is lowered and fitted into the connector terminal assembly 20 crimped in (c).
In (e), mating is completed and one connector assembly 1
It means that the ribbon cable 15 is crimp-connected to 6.
In this way, by accommodating a plurality of high-density connector assemblies to which multi-core cables are connected in the connector housing, a high-density multi-core connector can be formed.

FIG. 6A is a side sectional view when the connector assembly 16 formed in FIG. 3 or 5 is stacked in four stages and housed in the connector housing 17. The connector contacts 2 are inserted into the connector contact fixing holes 18 provided for each one, and are fixed securely. FIG. 6C shows the uppermost connector assembly 1 of FIG.
6 is a plan view seen from above in a state where 6 is also stored and a cable connecting portion protection case 19 (not shown) is covered, and FIG. This is a front view of mating with the connector.

In the example shown in FIG. 6, four connector assemblies each having ten connector terminals are stacked and housed. However, the connector assemblies can be freely arranged side by side or the number of steps can be increased or decreased depending on the shape of the connector housing. can do.

[0024]

As described above, in the connector terminal assembly of the present invention, the insulator has a constant repetition interval P.
Then, since the concave portions of the same shape are alternately formed in the connector terminal arranging direction and the connector terminals are fixed at the positions of the convex portions, the two connector terminal assemblies are placed in the concave portions of the mating portions. When they are engaged with each other, they are integrated, and as a result, a connector terminal array having P / 2 intervals is obtained. Therefore, the crimping of the electric wire is performed in the state of the individual connector terminal assemblies, and later, the two connector terminal assemblies to which the electric wire has been crimped are fitted to each other and integrated as if P /
The crimping of the electric wire to the connector terminals arranged at two intervals gives the same result as the crimping of the electric wire.

Therefore, in the prior art, the distance between the connector terminals can be narrowed only to the minimum limit of the distance between the crimper parts of the crimping tool, but in the present invention, the wire crimping of the connector having the half of the connector terminal distance can be performed. The advantage is that the same effect can be obtained, and the high density of the terminals of the connector can be realized without lowering the efficiency of the crimp connection method of crimping a plurality of terminals at the same time.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of a connector terminal assembly of the present invention.

FIG. 2 is a perspective view of the connector terminal assembly in the same state as when the connector terminal assembly of FIG.

FIG. 3 is a schematic diagram of a connector terminal assembly of FIG. 1 and a connector terminal assembly of FIG.
FIG. 3 is a perspective view of a connector assembly in which the thing of FIG. 2 is overlapped on the thing of FIG.

FIG. 4 is a cross-sectional view showing a locked state of the retainer when fitted as shown in FIG.

FIG. 5 illustrates a procedure for connecting a ribbon cable to a connector terminal of the present invention to form a connector assembly.

FIG. 6 is a structural diagram of a multi-core connector in which a plurality of connector assemblies of the present invention to which cables are connected are stacked and housed in a connector housing.

FIG. 7 is a perspective view of a conventional connector terminal assembly.

FIG. 8 is a cross-sectional view of a crimping tool for simultaneously crimping and connecting electric wires to the open barrels of the connector terminals arranged side by side in one row.

9 is a perspective view of the connector terminal assembly of FIG. 7 after an electric wire has been crimped and connected.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Connector terminal 2 Connector contact 3 Open barrel 4 Molded resin body 5 Electric wire 6 Electric wire connecting part 7 Convex part 8 Recessed part 9 Cavity 10 Crimper part 11 Anvil part 12 Crimper 13 Anvil assembly 14 Step 15 Ribbon cable 16 Connector assembly 17 Connector housing 18 Connector Contact fixing hole 19 Cable connection part protection case 20 Connector terminal assembly

Claims (3)

[Claims] 1. An insulator in which convex portions and concave portions of the same shape are alternately formed in a connector terminal array direction at a constant repeating interval P, and the two convex portions of the same insulator are faced to each other to face each other. It is possible to form an integral structure by fitting the convex part of one side to the concave part of the other side.The center part of each connector terminal penetrates through the center of the width in the arrangement direction of each convex part of the insulator to open the multiple connector terminals. A connector terminal assembly, wherein the barrels are oriented in the same direction orthogonal to the connector terminal arrangement direction. 2. A connector assembly having a connector terminal interval of P / 2, wherein the two connector terminal assemblies according to claim 1 to which an electric wire is connected are integrated with each other by fitting the protrusions into the recesses of the counterpart. 3. A multi-core connector in which a plurality of connector assemblies according to claim 2 are collectively housed in a connector housing.