Radio frequency cable connector

Details Radio frequency cable connector Radio frequency cable connector

2002-03-29

2003-11-18

Ta, Tho D. (Department: 2833)

Electrical connectors

Including or for use with coaxial cable

Adapted to secure cables perpendicular to one another or a...

C439S387000, C439S578000, C439S585000

Reexamination Certificate

active

06648684

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a radio frequency (RF) cable connector, and more particularly to an RF cable connector connecting to a coaxial cable which serves as or feeds an antenna for transmitting and receiving signals in the wireless communication field.
2. Related Art
With reference to
FIG. 1
, a prior art RF cable connector
4
is disclosed for connecting to a coaxial cable
400
. The coaxial cable
400
has a central conductor
410
surrounded by an insulative layer
420
, which in turn is surrounded by a braiding layer
430
, which is covered by a cable sheath (not labeled).
The prior art connector
4
includes a conductive housing
40
enclosing a contact
401
therein. In assembly, an inner metallic sleeve
42
of the connector encloses the central conductor
410
and insulative layer
420
of the cable
400
, and the inner metallic sleeve attaches to the housing
40
, with the central conductor
410
electrically connecting to the contact
401
of the connector. A middle metallic sleeve
43
of the connector
4
engages with the inner metallic sleeve
42
, fixing the braiding layer
430
therebetween. Furthermore, an outer metallic sleeve
44
is mounted over the middle sleeve
43
and encircles the middle sleeve
43
and the cable
400
. Through engagements between an insulative sleeve
45
, a tail sleeve
46
, the inner sleeve, the middle sleeve and the outer sleeve
44
, the cable is fixed to the connector.
However, the process of assembling the cable
400
to the connector
4
is complicated, and the connector is unnecessarily complicated and has too many parts. Thus, productive efficiency is decreased and the cost of manufacture is increased.
An improved RF cable connector including fewer parts is desired.
BRIEF SUMMARY OF THE INVENTION
It is an object of the present invention to provide a radio frequency cable connector having a simpler structure and requiring fewer parts for connecting with a coaxial cable which serves as or is attached to an antenna.
A radio frequency cable connector in accordance with the invention comprises a first element and a second element. The first element includes a housing, an insulator, a central contact fixed in the insulator, an annular nut, a protective lid and a rear cover to enclose a rear portion of the housing. The second element includes a metallic sleeve defining a central bore therethrough, an insulative sleeve, and a tail sleeve. The metallic sleeve engages with the housing of the first element, the insulative sleeve accepts a lower portion of the metallic sleeve therein, and the tail sleeve accepts a lower portion of the insulative sleeve. A coaxial cable is received within these three sleeves, its central conductor connecting to the central contact of the first element, and its braiding being wedged between the metallic and the insulative sleeves. With this arrangement, only the metallic and insulative sleeves are required to fix the cable to the housing of the first element, without the aid of the middle and outer sleeves of the prior art.
Further objects and advantages of the present invention will become more apparent from a consideration of the drawings and the following detailed description.


REFERENCES:
patent: 2952823 (1960-09-01), Robinson
patent: 6331123 (2001-12-01), Rodrigues
patent: 6468100 (2002-10-01), Meyer et al.

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