Electrical connectors – Including or for use with coaxial cable – Adapted to secure cables perpendicular to one another or a...
Reexamination Certificate
2000-07-31
2003-01-21
Sircus, Brian (Department: 2839)
Electrical connectors
Including or for use with coaxial cable
Adapted to secure cables perpendicular to one another or a...
Reexamination Certificate
active
06508668
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to L-shaped coaxial connectors and terminals for the same.
2. Description of the Related Art
FIG. 3
shows a conventional connector of this type. A coaxial cable C has a jacket C
1
, a shield wire C
2
, a dielectric member C
3
, and a central conductor C
4
, which is soldered to a terminal
51
of the connector
50
. The terminal
51
has a connection section
52
made by bending a metal piece and a contact section
53
. The connection section
52
has a projected portion
52
A toward one end and an erected wall
52
B at the other end. A slit
52
C is provided in the erected wall
52
B to position the central conductor C
4
in place. The projected portion
52
A positions the front end of the central conductor C
3
. Both the projected portion
52
A and the erected wall
52
B prevent solder from flowing out of the connection section
52
. The contact section
53
consists of a pair of parallel plates extending downwardly from the projected portion
52
A.
An insulation block
54
for supporting the terminal
51
has a cylindrical body section
55
and an inner cover section
56
. The body section
55
has a central cavity
55
A, a flat top face
55
B such that the contact section
53
of the terminal
51
is accommodated in the central cavity
55
A while the connection section
52
rests on the top face
55
B. A shoulder section
57
extends radially from the top of the body section
55
to support the dielectric member
3
C of the cable C. The inner cover section
56
and the shoulder section
57
cover the terminal
52
.
An outer conductor
58
is made from a metal sheet so as to have a cylindrical section
59
and an outer cover section
60
. The cylindrical section
59
accommodates the body section
55
to form an annular space
61
between them. The outer cover section
60
extends laterally from the cylindrical section
59
so as to press down the inner cover section
56
and has a front end crimped around the cable C.
A mating connector
70
has a terminal
71
, a dielectric block
72
, and an outer conductor
73
. The terminal
71
is partially drawn to form a contact projection
71
A and has a connection plate
71
B. The outer conductor
73
has a cylindrical section
73
A, which is inserted into the annular space
61
of the connector
50
to make contact with the cylindrical section
59
while the terminal
71
is fitted into the terminal
53
.
However, there has been a demand for a coaxial connector having a small height. The height of the connector in
FIG. 3
is equal to the sum of the height of the dielectric body section
55
, the diameter of a cable (dielectric member C
3
), and the thickness of the inner and outer cover sections
56
and
60
. The thickness and position of the shoulder section
57
must be considered to reduce the height of the body section
5
S. The height of the annular space is limited to the height of the outer conductor which
25
is required for stable plugging operation. Since the connection section
52
of the terminal
51
extends up to the shoulder section
57
, it is impossible to reduce the length of the connector beyond this point.
SUMMARY OF THE INVENTION
Accordingly, it is an object of the invention to provide a coaxial connector having small height and length and a terminal for the connector.
According to the invention there is provided an L-shaped coaxial connector comprising a terminal having a connection section to which a central conductor of a cable is connected and a contact section extending at right angles from the connection section for contact with a contact section of a mating connector; a dielectric block for supporting the terminal and having a body section with a central cavity for accommodating the contact section and an inner cover section for pressing the connection section of the terminal placed on a top face of the body section; an outer conductor having a cylindrical section for accommodating the body section and an outer cover section for pressing down the inner cover section.
According to the invention, the inner cover section has a length no more than a diameter of the cylindrical section, and the connection section has a height no more than a diameter of dielectric member of the cable placed on the dielectric block. Since the inner cover section falls within the range of the diameter of the cylindrical section, by lowering the top face of the body section it is possible to reduce the height of the connector. In addition, the cylindrical section does not prevent the inner cover section from compressing the dielectric member of a cable, further reducing the height of the connector.
The dielectric block comprises a shoulder section extending radially from the body section and having a support face for supporting the cable. Since the shoulder section is situated at a position different from that of the inner cover section, the cable is deflected and compressed owing to its flexibility and elasticity so that the shoulder section does not increase the connector height. It is preferred that the top face of the dielectric block is lower than the support face of the shoulder section. It is preferred that the dielectric block comprises a gap between the body section and the shoulder section to facilitate deformation of the cable.
The connection section of the terminal has a U-shaped cross-section with a flat portion to which the central conductor of the cable is soldered and a pair of opposed erected walls, one of which has a slit for receiving the central conductor while the other one is opposed to a front end of the central conductor to not only simplify the manufacture of the terminal but also prevent the solder from adhering undesired parts of the terminal.
REFERENCES:
patent: 4590337 (1986-05-01), Englemore
patent: 5263877 (1993-11-01), Mitani
patent: 5772470 (1998-06-01), Togashi
patent: 311740 (1993-06-01), None
patent: 0739059 (1996-10-01), None
patent: 5-152037 (1993-06-01), None
Duverne J. F.
Hirose Electric Co. Ltd.
Sircus Brian
LandOfFree
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