JP4486909B2 - Electrical connector - Google Patents

Description

The present invention relates to an improvement in an electrical connector for cable connection for electrically connecting a cable and a cable, or a cable and a printed wiring board.

    Conventionally, various types of electrical connectors for connecting cables and cables, or cables and printed wiring boards, etc., have been used. Particularly, conventional electrical connectors for connecting a plurality of coaxial cables are described below. Is used.

FIG. 7 is a conceptual perspective view illustrating a procedure for connecting a plurality of coaxial cables to an electrical connector described later.

First, a plurality of coaxial cables 1 having one end exposed in the order of the center conductor 1a, the nonconductor 1b, the outer conductor 1c, and the outer sheath 1d are prepared, and each outer conductor 1c of the coaxial cable 1 is connected to a pair of upper and lower connecting members ( A pair of conductive plates) 2 and 3 are juxtaposed at a predetermined pitch. Thereafter, the pair of connecting members 2 and 3 and the outer conductor 1c of each coaxial cable 1 are connected by soldering.

  Next, as shown in the perspective view of FIG. 8, a pair of connecting members 2 and 3 are arranged in a positioning recess 6 formed on the upper surface of the housing 5 of the electrical connector 4 functioning as a plug connector. The central conductor 1a of the cable 1 is placed on the connection terminals of the corresponding contacts 7 arranged in the housing 5 at a predetermined pitch. Thereafter, the center conductor 1a of each coaxial cable 1 and the connection terminal of the corresponding contact 7 are fixed by fixing means such as caulking or soldering.

Next, as shown in the perspective view of FIG. 9, the housing 5 is covered with a metal shell 8 as shown by an arrow to be fitted and supported. As a result, as shown in the perspective view of FIG. 10, the connecting member 3 (FIG. 9). The upper surface of the coaxial cable 1 is pressed by the tongue piece 8a of the metal shell 8 to be fixed in the housing 5, and the outer conductor 1c (FIG. 7) of each coaxial cable 1 and the metal shell are connected via the tongue piece 8a pressed against the connecting member 3 on the upper surface. 8 is electrically connected, thereby completing the electrical connector 4 to which a plurality of coaxial cables 1 are connected.

The connection between the pair of connecting members 2 and 3 and the metal shell 8 described above may be connected by soldering in addition to the above-described press-contact connection by the tongue piece 8a.

The contacts 7 of the electrical connector 4 described above are connected to corresponding contacts of a receptacle connector mounted on a printed wiring board (not shown), and the metal shell 8 is also connected to the metal shell of the receptacle connector. And connected to a ground terminal of a printed wiring board (not shown).

  By the way, the above-described conventional electrical connector has a structure in which the outer conductor 1c of the coaxial cable 1 and the pair of connecting members (a pair of conductive plates) 2 and 3 are connected by soldering. At the time of attachment, the melted solder impregnates the outer conductor 1c of the coaxial cable 1, so that when the solder is cooled and solidified, the outer conductor 1c of the coaxial cable 1 is cured and the flexibility of the portion is significantly reduced.

As described above, when the outer conductor 1c of the coaxial cable 1 is hardened and its flexibility is remarkably lowered, the manageability of the entire coaxial cable 1 is lost. For example, in a narrow housing such as a mobile phone or a small computer. When assembling the electrical connector, there is a problem that the workability is remarkably lowered.

Further, in the conventional electrical connector 4, the outer conductor 1c of the coaxial cable 1 and the connecting members 2 and 3 are connected through a soldering process, so that the number of assembling processes is large, and this causes an increase in cost when manufacturing the electrical connector. It was.

  In view of the circumstances described above, an object of the present invention is to provide an electrical connector that improves the manageability of a cable to be connected and reduces the manufacturing cost.

In order to solve the above-described problem, in the present invention, at least a housing provided with a contact connected to the central conductor of the coaxial cable, and a metal shell that is fitted to the housing and connected to the outer conductor of the coaxial cable are provided. Yes, and the an electrical connector to connect directly caulked via the coupling crimping means outer conductor and with said metallic shell of the coaxial cable, the coupling crimping means consists of a metal plate member and the plate member having conductivity And a caulking protrusion for positioning and supporting the outer conductor of the coaxial cable, and an insertion hole for inserting the caulking protrusion is formed in the metal shell. that by caulking the caulking projections projecting from the hole and so as to connect the coaxial cable outer conductor and said metal shell electrically And butterflies.

According to the electrical connector of the present invention described above, the outer conductor of the coaxial cable and the metal shell are connected by caulking directly through the connecting caulking means, and the connecting caulking means includes a conductive metal plate and The metal shell includes a caulking protrusion that is erected in a comb-like shape and positions and supports the outer conductor of the coaxial cable. The metal shell is formed with an insertion insertion hole for inserting the caulking protrusion. Since the outer conductor of the coaxial cable and the metal shell are electrically connected by caulking the caulking protrusion protruding from the hole , solder is not used for the connection between the outer conductor and the metal shell. For this reason, the outer conductor of the coaxial cable is not impregnated with solder, and the flexibility thereof is not impaired. When performing assembly work of the electrical connector of the type computer narrow enclosure of the like, the workability can be significantly improved. In addition, since there is no soldering process in the connection between the outer conductor of the coaxial cable and the metal shell, the number of assembly processes is reduced, thereby significantly reducing the manufacturing cost of the electrical connector and providing an inexpensive electrical connector.

  Hereinafter, an embodiment of the electrical connector according to the present invention will be described in detail.

  FIG. 1 is a fragmentary sectional view showing an electrical connector 10 according to the present invention, and the same parts as those in FIG.

The electrical connector 10 of this embodiment is a plug-type connector that is fitted into a receptacle (not shown) positioned below to electrically connect a cable.

  The electrical connector 10 also includes an insulating housing 11 made of a synthetic resin such as plastic as in the prior art, and a plurality of electrical connectors 10 arranged at a predetermined pitch along the width direction (vertical direction in the drawing) of the housing 11. The outer conductor 1c of the coaxial cable 1 and the metal shell 13 are directly connected via a connecting caulking means 20 to the contact 12 and the metal shell 13 formed of a conductor such as a metal covering the housing 11. It is crimped and electrically connected.

  Next, a procedure for arranging a plurality of coaxial cables 1 in the electrical connector 10 according to the present application described above will be described, and the configuration will be described in more detail.

  FIG. 2 is a conceptual perspective view showing the connecting caulking means 20 described above.

  The connecting caulking means 20 includes a conductive metal plate 21, and a caulking member 23 including a pair of caulking protrusions 22 is provided in a comb-teeth shape at positions facing each other on the plate 21. A plurality of the caulking members 23 are arranged in parallel along the longitudinal direction of the plate body 21 at a predetermined pitch (specifically, a pitch slightly smaller than the diameter of the external conductor 1c).

  Then, in order to position the plurality of coaxial cables 1 in the connecting caulking means 20, as shown in FIG. 2, the outer conductor 1c of the coaxial cable 1 is fitted between a pair of caulking members 23 formed by a pair of caulking protrusions 22. To wear. As described above, when the outer conductor 1c of each coaxial cable 1 is fitted between the pair of caulking members 23, the plurality of coaxial cables 1 are provided at a predetermined pitch along the longitudinal direction of the connecting caulking means 20. Further, each outer conductor 1c is electrically connected to the metal plate 21 having conductivity.

  Next, the connecting caulking means 20 in which a plurality of coaxial cables 1 are provided on the plate body 21 at a predetermined pitch is arranged in the positioning recess 11a formed on the upper surface of the housing 11 shown in FIG. Position. At that time, as shown in FIG. 1, the respective central conductors 1a of the respective coaxial cables 1 are positioned on the connection terminals 12a of the corresponding contacts 12 arranged in the housing 11 at a predetermined pitch, and thereafter, the respective coaxial cables 1 are arranged. One central conductor 1a and the corresponding connection terminal 12a of the contact 12 are electrically connected by fixing means such as caulking or soldering.

  In this way, after the connecting caulking means 20 in which a plurality of coaxial cables 1 are provided at a predetermined pitch is positioned in the positioning recess 11a formed on the upper surface of the housing 11, as shown in FIG. The metal shell 13 is fitted into the housing 11.

A concave portion 13a is formed in the metal shell 13 at a position facing the connecting crimping means 20 in advance by machining such as pressing on the upper surface of the metal shell 13, and further on both sides of the bottom of the concave portion 13a. A pair of insertion holes 13b into which the caulking protrusions 22 are inserted are formed at positions facing the caulking protrusions 22.

Therefore, as shown in FIG. 4, when the metal shell 13 is fitted into the housing 11 from above, as shown in FIG. 5, the caulking projections 22 are inserted into the fitting insertion holes 13b in the recesses 13a of the metal shell 13, respectively. It will protrude in the recessed part 13a.

  Then, as shown in FIG. 6, when each crimping protrusion 22 protruding from the fitting hole 13b formed in the recess 13a of the metal shell 13 is crimped so as to hold the recess 13a of the metal shell 13, it is shown in FIG. Thus, each outer conductor 1c of each coaxial cable 1 and the metal shell 13 are caulked directly via the coupling caulking means 20, and are mechanically and electrically connected.

Therefore, according to the electrical connector 10 according to the present invention described above, each outer conductor 1c of the plurality of coaxial cables 1 and the metal shell 13 are directly crimped and electrically connected via the coupling crimping means 20, Compared to the case where solder is used for the connection between the outer conductor and the metal shell as in the prior art, the flexibility of the outer conductor is not impaired, so that the handling property of the entire coaxial cable 1 is improved. Or, when performing the assembly work of the electrical connector 10 in a narrow housing such as a small computer, the workability can be remarkably improved. In addition, since there is no soldering process in the connection between the outer conductor 1c of the coaxial cable 1 and the metal shell 13, the number of assembly processes is reduced, thereby significantly reducing the manufacturing cost of the electrical connector 10 and providing an inexpensive electrical connector. It will be possible to do.

    As described above, the present invention is suitable for an electrical connector that improves the manageability of a cable to be connected and reduces the manufacturing cost.

FIG. 1 is a sectional view of an essential part of an electrical connector according to the present invention. FIG. 2 is a conceptual perspective view of the connecting caulking means. FIG. 3 is a conceptual perspective view showing a state in which the connecting caulking means is disposed in the housing. FIG. 4 is a conceptual perspective view of a metal shell. FIG. 5 is a conceptual perspective view showing a state in which a metal shell covering the metal shell is fitted to the housing. FIG. 6 is a conceptual perspective view showing a completed state of the electrical connector according to the present invention. FIG. 7 is a conceptual perspective view showing a procedure for assembling a conventional electrical connector. FIG. 8 is a conceptual perspective view showing a procedure for assembling a conventional electrical connector. FIG. 9 is a conceptual perspective view showing a procedure for assembling a conventional electrical connector. FIG. 10 is a conceptual perspective view showing a completed state of a conventional electrical connector.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Coaxial cable 1a ... Center conductor 11 ... Housing 12 ... Contact 13 ... Metal shell 13b ... Insertion hole 20 ... Connection crimping means 21 ... Plate body 22 ... Caulking protrusion

Claims (1)

A housing in which the contact is arranged to be connected to the center conductor of the coaxial cable, at least have a metal shell which is fitted to the housing to connect the outer conductor of the coaxial cable,
An electrical connector for directly caulking and electrically connecting the outer conductor of the coaxial cable and the metal shell via a coupling caulking means ,
The connection caulking means includes a conductive metal plate body and a caulking protrusion that is erected in a comb-tooth shape from the plate body and positions and supports the outer conductor of the coaxial cable. An insertion hole for inserting the caulking protrusion is formed, and the outer conductor of the coaxial cable is electrically connected to the metal shell by caulking the caulking protrusion protruding from the insertion hole of the metal shell. An electrical connector characterized by that.

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