U.S. patent number 3,639,889 [Application Number 04/848,576] was granted by the patent office on 1972-02-01 for electrical connector.
Invention is credited to George Komadina.
United States Patent |
3,639,889 |
Komadina |
February 1, 1972 |
ELECTRICAL CONNECTOR
Abstract
An electrical connector structure adapted for quick connection
while yet maintaining the impedance characteristics of a
transmission means, such as a transmission line. The connector may
be arranged for use with coaxial electrical coupling elements
permitting a plurality of simultaneous connections to be made as
between components of an apparatus. The connector structure
includes a tubular member providing releasable retained association
of the electrical coupling elements for facilitated connection and
disconnection.
Inventors: |
Komadina; George (De Kalb,
IL) |
Family
ID: |
25303686 |
Appl.
No.: |
04/848,576 |
Filed: |
August 8, 1969 |
Current U.S.
Class: |
439/357;
439/675 |
Current CPC
Class: |
H01R
24/44 (20130101); H01R 2103/00 (20130101) |
Current International
Class: |
H01R
13/00 (20060101); H01R 13/646 (20060101); H01r
013/54 (); H01r 017/06 () |
Field of
Search: |
;339/89C,177,143,258A,60,9C,91P,94C,126J,75R,75M,89C |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Champion; Marvin A.
Assistant Examiner: Staab; Lawrence J.
Claims
I claim:
1. An electrical connector structure comprising:
a first electrical coupling element having a base portion;
a second electrical coupling element having a tubular
projection;
a retainer member having first and second opposite ends;
first frictional engagement means for developing frictional forces
to fixedly secure said first end of the retainer member to the base
portion; and
second frictional engagement means for developing frictional forces
less than the frictional forces developed by said first frictional
engagement means to releasably secure said second end of the
retaining member to the tubular projection upon engagement of the
coupling elements to releasably maintain said elements in
electrically connected association.
2. The electrical connector structure of claim 1 wherein said first
frictional engagement means includes a shoulder means carried by
said base portion for mechanically interlocking the first end of
the retainer member therewith.
3. The electrical connector structure of claim 1 wherein said base
portion of the first electrical coupling element is cylindrical and
has a radially outwardly opening coaxial groove, said first end of
the retainer member overlying said groove.
4. The electrical connector structure of claim 1 wherein said first
end of the retainer member is press fitted onto said base portion
of the first electrical coupling element.
5. The electrical connector structure of claim 1 wherein said
retainer member first end is annular and said second opposite end
comprises a plurality of spring fingers.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to electrical connector structures and in
particular to constant impedance connector structures.
2. Description of the Prior Art
Electrical connectors are well known for providing electrical
and/or mechanical connections between elements such as cables and
components of apparatus. Such connectors include plugs, jacks,
receptacles, etc. Where relatively high frequencies are to be
conducted, special provisions are made to maintain desired
impedance and preclude noise, leaks, shorts, etc., in the
connections. Such high-frequency connectors are utilized
illustratively in connection with microphones, chassis, cables,
etc. In the conventional high-frequency connectors means are
provided for maintaining the impedance characteristics of the
elements being connected. Thus, such connectors may be referred to
as constant impedance connectors. Illustratively, such a connector
may be utilized to connect two portions of a 50 ohm coaxial cable
without affecting the impedance characteristics thereof.
The known connectors providing such constant impedance
characteristics are provided with threaded means for effecting the
desired mechanical junction between the elements being connected.
Such mechanical connecting means have been found to provide a
serious limitation in the usefulness of such connectors in that it
is difficult at times to provide sufficient space to permit
facilitated connection and disconnection. Further, a substantial
amount of time is necessary to effect such mechanical connections
and, where a large number of such connections are to be made, this
presents a serious cost and time problem.
SUMMARY OF THE INVENTION
The present invention comprehends an improved electrical connector
structure wherein a constant impedance-type electrical connection
is provided in combination with mechanical junction means affording
a quick-connect type of connection. In the present invention, a
tubular element is provided on one of the electrical coupling
elements and includes friction retaining means for releasably
retaining in mechanically held association the other of the
electrical coupling elements. The electrical coupling elements may
comprise coaxial coupling elements and the tubular member defines
positive push on-type quick-connect mechanical securing means with
the coupling elements disposed coaxially within the tubular
member.
The tubular member is extremely simple and economical of
construction while yet providing in the electrical connector
structure the highly desirable quick-connect functioning discussed
above. The tubular member may be provided with spring fingers for
effecting the desired releasable holding action.
BRIEF DESCRIPTION OF THE DRAWING
Other features and advantages of the invention will be apparent
from the following description taken in connection with the
accompanying drawing wherein:
FIG. 1 is an exploded side elevation of a connector embodying the
invention;
FIG. 2 is an end elevation of one of the coupling elements
thereof;
FIG. 3 is an exploded side elevation of another form of connector
embodying the invention; and
FIG. 4 is an exploded side elevation of still another form of
connector embodying the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In the exemplary embodiment of the invention as disclosed in FIGS.
1 and 2 of the drawing, a connector generally designated 10 is
shown to comprise a first electrical coupling element 11, a second
electrical coupling element 12, and a tubular retaining member
13.
The first coupling element 11 is provided with a coaxially
annularly grooved cylindrical base portion 14 adapted to receive a
first end portion 15 of the tubular member 13. The second coupling
element 12 is provided with a tubular projection 16 adapted to
receive in frictional engagement the opposite end 17 of the tubular
member 13 defined by a plurality of spring fingers 18. The tubular
member end 15 is fixedly secured to the base 14 as by being press
fitted thereto. Coupling element 11 is provided with a conventional
electrical connecting means, such as male coaxial connector portion
19, and second coupling element 12 may be provided with a
complementary female coaxial connector portion 20.
In making an electrical connection, the male-coupling element 11
may be brought to the female-coupling element 12 so as to
electrically connect the coaxial elements 19 and 20. The spring
fingers 18 frictionally engage the outer surface of the tubular
projection 16 to releasably lock the coupling elements in
electrical connected association. As shown in FIGS. 1 and 2, the
female coupling element 12 may comprise a panel mounted element
having a plate portion 21 provided with suitable openings as for
extension of screws or rivets therethrough to secure the plate to a
mounting panel (not shown) as desired. In illustrating the
connector 10, the male coupling element 11 is shown as a
right-angle adapter arranged to have quick connection with the
chassis-type coupling element 12.
Referring now to FIG. 3, the invention is illustrated in connection
with coupling elements of modified form. Thus, the female-coupling
element 112 may comprise a locknut-type receptacle and the
male-coupling element 111 may comprise a conventional straight
plug.
As shown in FIG. 4, the male-coupling element 211 may comprise a
conventional cable plug and the female-coupling element 212 may
comprise a conventional female cable plug. As will be obvious to
those skilled in the art, other forms of connector elements may be
employed utilizing the quick-connect means of tubular member 13,
base 14 and tubular projection 16 within the scope of the
invention. Further, as will be obvious to those skilled in the art,
not only coaxial connections may be utilized, but all conventional
forms of electrical coupling means may be utilized to provide the
desired quick-connect type of constant impedance connection. The
tubular member 13 may formed of a suitable material such as spring
bronze.
While the invention has been illustrated in connection with a
tubular member fixedly secured to the male element, as will be
further obvious to those skilled in the art, the tubular member may
be reversely fixedly secured to the female element for releasable
engagement with the male element as desired. Thus, the invention
comprehends broadly the provision of such an electrical connector
structure wherein a slip on-type quick-connect connection is made
in conjunction with a constant impedance-type electrical coupling
to provide facilitated connection between portions of electrical
apparatus of all types.
As the retaining member 13 may engage the tubular projection 16 in
any angular position about the axis of the tubular projection, the
electrical connection is facilitated. Thus, for example, where the
first coupling element comprises an elbow-type element, such as
element 11 of FIG. 1, the distal portion 23 may extend in any
desired direction radially from the axis of the connecting portion
19. Where the first coupling element comprises a rectilinear
element, the ability to make the connection with the first coupling
element disposed in any angular position about the axis of the
coupling permits the coupling to be made without twisting the
cables, etc., to which the coupling elements are connected.
The foregoing disclosure of specific embodiments is illustrative of
the broad inventive concepts comprehended by the invention.
* * * * *