Electrical connectors – With stress relieving means for conductor to terminal joint – Conductor gripped by or entirely within connector housing
Patent
1996-01-16
1997-03-04
Paumen, Gary F.
Electrical connectors
With stress relieving means for conductor to terminal joint
Conductor gripped by or entirely within connector housing
439499, 439606, 439942, 29865, 29867, H01R 1358
Patent
active
056073216
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The present invention relates to a process for fitting a cable provided with a number of single wires, preferably a round cable, with a multi-way, preferably flat, plug, and a cable connector employed in such a process.
In a known process of this type, the single wires exposed outside the cable sheath have their free ends stripped of insulation and are then connected to contacts supplied on a roll. If the contacts are provided with crimp connectors, the stripped ends of the single wires are placed on the crimp connectors and attached with the aid of a device (a crimping machine). The contacts are separated from each other at the same time. The individual cores are then inserted into a plug.
If the plug and thus the contacts become smaller, as is the case with PCMCIA cable plugs, the processing is very difficult. Moreover, the risk of damage to the contacts is greater when the parts become smaller. Often, the contacts can then only be fitted under the microscope, which is very costly. Furthermore, a high cost is incurred in ensuring the quality of the product. Since the exposed end regions of the cable are cut to the same length prior to insertion in the plug, stowage space must be available in the plug for the inner single wires, which in turn runs counter to desired miniaturisation.
The object of the present invention is therefore to create a process for fitting a cable with a plug of the type referred to above, which can be implemented in a more cost-effective manner and in which the risk of damaging the small contacts is greatly reduced. Moreover, a correspondingly very compact cable connector is to be provided.
SUMMARY OF THE INVENTION
In accordance with one embodiment of the invention, contacts are automatically pre-assembled in a cost-effective manner. Also, the cable preparation for connection to the individual contacts can be carried out more rapidly and more securely; the same applies to the connections of cable ends and contacts made possible with the aid of a machine. The risk of damage to the small contacts is minimized by their preassembly and their machine-made connection to the ends of the single wires. Furthermore, quality assurance is simplified so that a cable connector can be provided that is simple to manufacture and fit, which, among other things, is very compact because the cable end stowage space is unnecessary.
Cable preparation is simplified. A cover plate also covers the contact-making area and thus provides simultaneous protection.
The electrical contact between the stripped single wire elements and the connection elements of the contacts can, for example, be effected in one operation by means of soldering. The crimping can also be carried out in an advantageous way in one operation for all single wires simultaneously with the aid of a single tool.
The risk of a broken wire is considerably reduced. The above steps also ensure that the single wires are not flushed away by the high injection pressure during encapsulation.
Further particulars of the invention are disclosed in the following description in which the invention is described in further detail and explained with the aid of the exemplary embodiment illustrated in the drawing, where:
DESCRIPTION OF THE DRAWINGS
FIG. 1A is a partial plan view of an unassembled cable connector of the present invention, without the contact carrier.
FIG. 1B is a plan view of a contact carrier of a cable connector, which can be assembled with the cable connector of FIG. 1A.
FIG. 2 is a partially cut-away plan view of the cable connector of FIG. 1A.
FIG. 3 is a plan view of the cable connector of FIG. 2 in the completed, plastic encapsulation state.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The cable connector 10 illustrated in a preferred exemplary embodiment is provided in particular as a PCMCIA cable connector in which it is constructed with a number of poles and in a very compact form.
As FIG. 2 shows, the cable connector 10 has a wire holder 11 that is manufactured in one piece from plastic and whose upper
REFERENCES:
patent: 3252644 (1966-05-01), Brent
patent: 4090656 (1978-05-01), Sato et al.
patent: 5203717 (1993-04-01), Beck et al.
patent: 5244397 (1993-09-01), Anhalt
patent: 5244407 (1993-09-01), Volk et al.
Frommer Juergen
Illg Manfred
Pfitzenreiter Werner
Schock Manfred
ITT Corporation
Paumen Gary F.
Peterson Thomas L.
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