JPH0620747A - Connector and manufacturing method thereof - Google Patents

Abstract

(57) [Abstract] [Purpose] When making contacts to be embedded in plug connectors, the number of molds and the number of parts are reduced to reduce costs, and the center contact and external contact are connected using the same crimping method. By improving the workability, reducing the man-hours, and simplifying the assembly work. [Structure] A center contact 1 and an outer contact 2 of a plug connector are press-molded in a state in which they are integrally connected by a same material through a connecting portion 3. These outer contact and inner contact are crimped and fixed to the outer conductor and the center conductor of the coaxial cable or shielded cable, respectively. The external contact and the central contact are separated and insulated by disconnecting the connecting portion 3 at a predetermined time. Install in this state in the insulator.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connector, and more specifically, it sends and receives an electric signal from a substrate or the like to take out to a shielded cable or a coaxial cable (or vice versa).
For the connector.

[0002]

2. Description of the Related Art Conventionally, when a connector of this type is manufactured and processed by using a mold, the center conductor and the outer conductor are processed by separate molds and assembled. As described above, in order to process the center conductor and the outer conductor by separate molds and then assemble them into a coaxial connector or the like, it is necessary to mechanically fix the conductors using an electrical insulator. Further, when soldering, an external force may be applied and the center conductor and the outer conductor may float. Therefore, it is necessary to fix them by some method.

Further, in the conventional connection between a connector and a cable, after connecting the center conductor and the contact, the outer conductor and the outer shell component are soldered or crimped.

[0004]

In the above-mentioned conventional connector, a large number of molds are required in order to process the center conductor and the outer conductor with separate molds and materials,
It has the disadvantage of high cost.

Further, in the conventional connection between the connector and the cable, after the center conductor and the contact are connected, the outer conductor and the outer shell component are soldered or crimped, so that the assembling workability is extremely poor. The time required for assembly was also great.

Further, in the conventional connector, the workability of the braiding process, which is an outer conductor, is poor, and special skill is required by a skilled person to achieve uniform dimensional finishing.

Therefore, an object of the present invention is to reduce the number of molds and the number of parts to reduce the cost.

Further, by adopting the same crimping method as the wiring method, the workability is improved and the man-hour is reduced, and
The purpose is to simplify the assembling work by facilitating the crimping work.

[0009]

According to the present invention, a center contact and an outer contact formed of the same material are included, and the center contact is a center conductor fixing portion connected and fixed to a center conductor of a cable. A center for connecting and fixing the inner cover fixing portion for fixing the inner cover of the cable and a contact portion for contacting the contact member of the mating connector, wherein the outer contact is connected and fixed to the center conductor of the cable. A connector is obtained which integrally has a conductor fixing portion, an inner casing fixing portion for fixing the inner casing of the cable, and a contact portion which comes into contact with a contact member of a mating connector.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

1 (a) and 1 (b) show a contact used in a plug connector as an embodiment of the connector of the present invention, which includes a central contact forming portion (hereinafter referred to as "central contact") 1 and an external portion. The contact forming portion (hereinafter referred to as “external contact”) 2 and a connecting portion 3 that integrally connects these portions.

FIG. 2 shows a target coaxial cable (or shielded cable) to be connected to the contacts, which is composed of a central conductor 50, an inner sheath (inner insulator) 51, an outer conductor 53 and an outer sheath 55. It Although the outer conductor 53 is shown in a broken state so as to be exposed in the drawing,
When the contact is attached, it is carried out with the outer cover 55 being covered. In the following description, a coaxial cable will be described for convenience, but a shielded cable may be used.

3 (a) and 3 (b) show an insulator 6 for accommodating the contact mounting portion of the coaxial cable.
And has a center contact accommodating portion 61 and an outer contact accommodating portion 63 having a diameter larger than that of the center contact portion. Reference numeral 65 denotes a recessed locking window for locking a part of the external contact.

As shown in FIG. 1, the central contact 1 is composed of a central conductor fixing portion 11 and an inner fixed portion. Also,
The outer contact 2 includes an outer conductor fixing portion 21 and an outer sheath fixing portion 2.
3 and 3. The external fixing portion 23 is formed with a knife-shaped press-fitting portion 25 that pierces the outer cover 55 of the coaxial cable and contacts the outer conductor.

The center contact and the outer contact 2 are formed in a state where they are integrally connected in the longitudinal direction by a connecting portion 3. That is, the center contact 1, the outer contact 2, and the connecting portion 3 are all made of the same substrate material and are integrally press-molded using a mold.

Next, the step of attaching the contact to the coaxial cable will be described.

As shown in FIG. 4A, the coaxial cable 5
The center conductor fixing part 1 of the center contact 1 is attached to the center conductor 50
The inner cover 51 corresponds to the inner cover fixing part 12, and the outer cover corresponds to the outer conductor fixing part 21 of the outer contact 2 and the outer cover fixing part 23. That is, the C portion, which is the end surface portion of the outer conductor 53 (sheath 55) of the coaxial cable of FIG. 2, is aligned with the C portion of the outer contact 2.

Then, as shown in FIG. 4 (b), when it is pressed by the cable mounting jig J of the crimping tool, the press-fitting portion 25 of the outer conductor fixing portion 21 penetrates through the outer cover,
The outer contact 2 and the outer conductor are connected. At this time or thereafter, as shown in FIG. 5, the crimping portion 1 of the central conductor fixing portion 11 of the central contact 1 is crimped by a crimping jig (not shown).
1a and the crimping portion 12a of the inner fixed portion 12, the crimping portion 21a of the outer conductor fixing portion 21 of the outer contact 2, and the crimping portion 23a of the outer fixed portion 23 are crimped. Then, during or after this crimping, the connecting portion 3 is cut to insulate the center contact 1 from the outer contact 2. As a result, the contact and the coaxial cable are mechanically fixed, and the connection between the coaxial cable and each of the contacts 1 and 2 is completed.

After this work is completed, it is assembled in the insulator 6 shown in FIG. 3 from the direction of the arrow in FIG. At the time of this assembling, the engaging portion 2b of the outer conductor fixing portion 21 is engaged with the engaging window 65 of the insulator shown in FIG. Then, as shown in FIGS. 6A and 6B, the coaxial cable 5 to which the contacts are attached is held and accommodated in the insulator 6 to form a plug connector. At this time, the center contact 1 is exposed in the notch portion 68 formed on the lower end side of the insulator 6. The external contact 2 is also exposed in the notch 69 formed on the upper side of the insulator 6. These notches 68 and 69 serve as guide grooves when inserting a plug connector, which will be described later, into the receptacle connector.

FIG. 7 shows a receptacle connector for connecting the plug connector formed as described above. The insulator 7 has a space 71 for accommodating a central contact 1 portion of the plug connector and an external contact 2 portion in the axial direction. And a space 73 for accommodating the are formed. The insulator 7 is provided with contact plate pieces 81 and 83 that come into contact with the central contact 1 and the external contact 2 of the plug connector when the plug connector is inserted and fitted. The contact plate pieces 81 and 83 are fixed holding portions 81a and 83.
b is fixedly held by the insulator 7. The contact plate pieces 81 and 83 are provided at positions facing each other, and the tips thereof are bent in a curved shape so as to project into the spaces 71 and 73.

Reference numeral 75 in the drawing denotes a hold-down (fixed end) for mounting the receptacle connector on the substrate 9 as shown in FIG.

Next, FIG. 9 shows a state in which the plug connector is inserted and fitted in the receptacle connector.

The curved contact portion of the contact plate piece 81 is in contact with the outer periphery of the center contact 1 exposed by the notch portion 68 formed in the insulator 6 of the plug connector. Similarly, the contact plate piece 8 is formed on the outer periphery of the external contact 2 exposed by the notch 69 of the insulator 6.
3 is in pressure contact. These contact plate pieces 81, 83 are in contact with each other while being pressed against the outer circumference of the contacts 1, 2 due to the relationship between the fixed holding portions 81a, 83a and the curved tip contact portions.

Incidentally, reference numerals 78 and 79 in the drawing are guide keys for guiding when the plug connector is fitted, and they are fitted into notches 68 and 69 formed in the insulator 6 of the plug connector when the plug connector is fitted. That is, the notches 68 and 69 and the guide keys 78 and 79 prevent mismates (misfitting) when the connectors are fitted.

At the time of connecting the plug connector and the receptacle connector, an insulator of the plug connector exists between the contact plate pieces 81 and 83, and both connectors are connected by a structure similar to the coaxial transmission system, and the external connector is connected from the outside. Less susceptible to noise.

FIG. 10 shows an application example of the connector of the present invention. (A) is a 1-core angle type, (b) is a 1-core straight type, (c) is a 5-core angle type,
(D) is an external perspective view showing a 5-core straight type.

FIG. 11 shows an example of an application of the plug connector of the present invention, showing a simple 5-core coaxial plug.

FIG. 12 shows an example of application of the receptacle connector of the present invention, and is a detailed explanatory view of the 5-core angle type.

FIG. 13 shows an example of application of the receptacle connector of the present invention, and is a detailed explanatory view of the 5-core straight type.

[0030]

As described above, according to the present invention,
The center contact and outer contact of the plug connector that is connected to the coaxial cable or shielded cable are integrally molded by press working, which makes it possible to unify the materials and reduce the number of parts, and if you also prepare one mold Good and cost can be reduced.

Further, since the connection of the contact to the cable is performed by crimping, it is not necessary to use solder, and the number of working steps is reduced and the cable is not burned by the heat of solder. Further, since the soldering work requires skill, not requiring the soldering work not only greatly contributes to simplification of the working process, but also does not deteriorate the quality of the product.

Also, the fact that the wire can be connected by crimping allows the wire connection portion to be processed to a degree slightly larger than the outer diameter of the outer jacket of the cable, which can greatly contribute to the reduction in size and weight.

Further, since the center contact and the outer contact are pressed at the same time, it is not necessary to sub-assemble (temporarily assemble) the insulator in advance, which contributes to simplification of the manufacturing process.

Since the center contact and the outer contact are integrally molded, they are extremely easy to handle when they are attached to a cable.

Further, the connector of the present invention has a coaxial transmission structure, that is, a simple coaxial connector, so that it is difficult for noise from entering from the outside, so that a high frequency signal can be transmitted. It is suitable for transmission.

[Brief description of drawings]

FIG. 1 is an explanatory view showing an embodiment of a connector of the present invention, which is press-molded in a state where a center contact and an external contact used for a plug connector are integrally connected, (a) is a front view, b) is a side view.

FIG. 2 is a partially cutaway side view showing a coaxial cable (or a shielded cable) which is a connection target of a plug connector.

3A and 3B are explanatory views showing an example of the shape of the insulator of the plug connector of the connector of the present invention, in which FIG. 3A is a front view and FIG. 3B is a side sectional view.

FIG. 4 is an explanatory view showing a state in which a cable is attached to the contacts of the plug connector of the present invention, (a) is a side view and (b) is a front view.

FIG. 5 is an explanatory view showing a state in which the contacts of the plug connector of the present invention are attached to a cable, (a) is a side view, and (b) is a sectional view taken along line BB of FIG. 5 (a).

6A and 6B are explanatory views showing a completed state of assembling the plug connector of the present invention, in which FIG. 6A is a front view and FIG. 6B is a side sectional view.

FIG. 7 is a side sectional view of the receptacle connector of the present invention.

FIG. 8 is an explanatory view showing an example of a state in which the receptacle connector of the present invention is attached to a substrate.

FIG. 9 is a side sectional view showing a fitting connection state of the connector of the present invention.

10A and 10B are explanatory views showing an application example of the connector of the present invention, FIG. 10A is a perspective view showing a one-core angle type, and FIG. 10B is a perspective view showing a one-core straight type; (C) is a perspective view showing a 5-core angle type, and (d) is a perspective view showing a 5-core straight type.

FIG. 11 is an explanatory view showing an application example of the plug connector of the connector of the present invention, (a) is a front view, (b) is a side sectional view, and (c) is a plan view.

FIG. 12 is an explanatory view showing an application example of the receptacle connector of the connector of the present invention, (a) is a front view,
(B) is a side sectional view and (c) is a plan view.

FIG. 13 is an explanatory view showing another application example of the receptacle connector of the connector of the present invention, (a) is a front view,
(B) is a side sectional view and (c) is a plan view.

[Explanation of symbols]

 1 Center Contact 2 External Contact 3 Connection Part 5 Coaxial Cable 6 Insulator 7 Insulator 11 Central Conductor Fixed Part 12 Inner Fixed Part 21 External Conductor Fixed Part 23 Outer Cover Fixed Part

Claims (4)

[Claims] 1. A center contact formed of the same material and an outer contact, wherein the center contact is a center conductor fixing portion connected and fixed to a center conductor of the cable, and an inner cover fixing the inner jacket of the cable. A fixed portion and a contact portion that comes into contact with a contact member of a mating connector are integrally provided, and the external contact includes a central conductor fixing portion that is connected and fixed to a central conductor of the cable, and an inner sheath of the cable. A connector characterized by integrally having an inner fixed portion for fixing a contact and a contact portion for contacting a contact member of a mating connector. 2. An insulator for accommodating and holding the center contact and the outer contact, wherein the insulator exposes a portion corresponding to a contact portion of the center contact and a portion corresponding to a contact portion of the outer contact. The connector according to claim 1, which has a notch. 3. A plug connector comprising the connector according to claim 2, and a receptacle connector connected to the plug connector, wherein the receptacle connector contacts the contact portion of the external contact and the contact portion of the center contact, respectively. To do 2
A connector comprising one contact plate piece and an insulator for accommodating and holding the two contact plate pieces in an insulated state. 4. The method for manufacturing a connector according to claim 2, wherein the external contact and the internal contact of the plug connector are integrally press-molded in the same material, and the external contact and the internal contact are formed by press molding. A method for manufacturing a connector, comprising crimping and fixing to an outer conductor and a center conductor of a coaxial cable or a shielded cable, respectively, separating and insulating the outer contact and the center contact at a predetermined time, and assembling the insulator in this state.