Patent Application
20050227515
1. Field of the Invention
The present invention relates to an electrical cable connector, and in particular to a electrical cable for holding a plurality of terminals to increase grounding area of the electrical cable and to efficiently prevent electromagnetic interruption (EMI) so that the electrical cable is more flexible and has larger tensile strength. The electrical cable is not prone to breakage and has a higher production line yield.
2. Description of Related Art
Conventionally, an electrical cable as shown in U.S. Pat. No. 6,444,902 B1 includes a pair of signal transmission groups. Each group has a pair of signal conductors wrapped by insulated layers respectively and a metal shielding wrapped on the pair of signal conductors. A pair of first non-insulated drain wires are disposed between the pair of signal conductors, and a pair of second non-insulated drain wires are disposed outside of the pair of signal conductors. The first and second non-insulated drain wires are in electrical connect with an outer surface of the metal shielding to provide a proper grounding.
However, although the conventional electrical cable provides a proper grounding and the width of the electrical cable is reduced, the first and second non-insulated drain wires are merely conductors with single core, grounding area is significantly insufficient. Even worse, the conductor with single core is engaged with the connector so that the conductor is prone to be broken because of stiffer strength of the conductor with single core and its less flexibility. It fails to provide tensile strength and to improve production line yield.
Furthermore, the electrical cable is connected with a terminal of the connector when the electrical cable is in use. However, the conductor is typically connected with the terminal by welding. The volume of the electrical cable and the terminal is small, so it is troublesome and time-consuming to weld the electrical cable and the terminal. Further, the welding zone is in the proximity of the housing of the connector, so the housing of the electrical components is prone to be melted because of high temperature. Thus, there is need to development of an electrical cable.
It is an object of the present invention to provide an electrical cable for holding a plurality of terminals.
It is another object of the present invention to efficiently prevent electromagnetic interruption (EMI) and increase grounding area of the electrical cable by multiple twisted electrical wires. The electrical cable has a desired flexibility and enhanced tensile strength, and the electrical cable is not prone to be broken and has a high production line yield after assembly.
In order to accomplish the object of the present invention, the present invention includes a plurality of terminal insulating bodies and a transmission cable connected with a plurality of terminals. Each of a plurality of terminals has a holding portion at its one end, and a corresponding tooth-liked snap piece is provided at one end of the terminals. A contact portion is provided at the other end of each of a plurality of terminals, and a holding segment is provided between the contact portion and the holding portion. Two interference portions are respectively provided at the side portion of the holding segment. The transmission cable has an insulating cover layer and two electrical cable groups formed within the insulating cover layer. The electrical cable groups are wrapped by a metal shielding, and a first ground cable consists of a plurality of twisted pair wires. A second ground cable is provided outside of the electrical cable groups, and the two electrical cable groups and the first and the second ground cables are respectively connected to the holding portions of a plurality of terminals. With a plurality of terminals for holding the electrical cable, grounding area of the electrical cable is increased to prevent electromagnetic interruption (EMI). Thus, the electrical cable is more flexible and has a higher tensile strength and is not prone to be broken so that yield is higher.
The present invention can be fully understood from the following detailed description and preferred embodiment with reference to the accompanying drawings in which:
The following detailed description is of the best presently contemplated modes of carrying out the invention. This description is not to be taken in a limiting sense, but is made merely for the purpose of illustrating general principles of embodiments of the invention. The scope of the invention is best defined by the appended claims.
Referring to
A plurality of terminals 11 are positioned within the insulating body 1, and a holding portion 111 is provided at one end of the terminals 11. The holding portion 111 is a U-shaped groove, and a corresponding tooth-liked snap piece 112 is provided at one end of the terminals 111. A contact portion 113 is provided at the other end of each of a plurality of terminals 11, and a holding segment 114 is provided between the contact portion 113 and the holding portion 111. Two interference portions 115 are respectively provided at the side portions of the holding segment 114.
The transmission cable 2 has an insulating cover layer 21 and two electrical cable groups 22 formed within the insulating cover layer 21. The electrical cable group 22 is wrapped by a metal shielding 23, and a first ground cable 24 consists of a plurality of twisted pair wires 241. A second ground cable 25 is provided outside of the electrical cable groups 22, and the two electrical cable groups 22 and the first and the second ground cables 24 and 25 are respectively connected to the holding portions 111 of a plurality of terminals 11.
Referring to
Referring to
As mentioned above, the tooth-liked snap piece of the holding portion is easy to hold the electrical cable and two ground cables. Besides, the ground cables have a plurality of twisted pair wires and grounding area of the electrical cable is increased to prevent electromagnetic interruption (EMI). Thus, the electrical cable is more flexible and has a higher tensile strength and is not prone to be broken so that yield is higher.
While the invention has been described with reference to the preferred embodiments, the description is not intended to be construed in a limiting sense. It is therefore contemplated that the appended claims will cover any such modifications or embodiments as may fall within the scope of the invention defined by the following claims and their equivalents.
