U.S. patent number 3,676,833 [Application Number 05/085,361] was granted by the patent office on 1972-07-11 for hermaphorodite electrical connector.
This patent grant is currently assigned to International Telephone and Telegraph Corporation. Invention is credited to George S. Johnson.
United States Patent |
3,676,833 |
Johnson |
July 11, 1972 |
HERMAPHORODITE ELECTRICAL CONNECTOR
Abstract
An electrical connector formed of an insulating member having a
plurality of contact passageways. The passageways have an enlarged
slotted section which divide each passageway into a first portion
and a second portion. A contact terminal inserted in the passageway
contains a pair of folded sections whose width is less than the
width of the first portion but greater than the width of the second
portion. A mounting flange portion which is formed adjacent a
mating surface section of one of the folded sections of the contact
terminal is insertable in the slotted section and one folded
section is positioned in the first portion of the passageway. The
insulator member is matable with a second identical insulator
member utilizing identical contacts. The contacts are removably
mounted in the housing.
Inventors: |
Johnson; George S. (Canoga
Park, CA) |
Assignee: |
International Telephone and
Telegraph Corporation (New York, NY)
|
Family
ID: |
22191107 |
Appl.
No.: |
05/085,361 |
Filed: |
October 30, 1970 |
Current U.S.
Class: |
439/295; 439/746;
439/733.1 |
Current CPC
Class: |
H01R
13/28 (20130101) |
Current International
Class: |
H01R
13/02 (20060101); H01R 13/28 (20060101); H01r
025/00 () |
Field of
Search: |
;339/47,48,49,176,210,217R,217S,258,256,198,65,66 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Champion; Marvin A.
Assistant Examiner: Lewis; Terrell P.
Claims
What is claimed is:
1. An electrical connector comprising:
an insulator member having a plurality of contact receiving
passageways therethrough, each of said passageways having an
enlarged slotted section extending from one end of said housing and
terminating within the housing and dividing said passageway into a
first portion and a second portion, the first portion being of
greater width than the second portion;
a contact terminal in said passageway comprising a front end and a
pair of folded sections extending rearwardly from said front end,
one of said sections terminating in a leaf spring portion and the
other section extending rearwardly and forming a mating surface
section, an enlarged width mounting flange portion rearward of said
mating surface section whose width is smaller than said enlarged
slotted section but greater than either of said first and second
passageway portions, the width of said first portion of said
passageway being wider than the width of said folded sections, a
portion of the width of said second portion being less than the
width of said folded sections said mounting flange portion being
positioned in said slotted section and said folded section
terminating in said leaf spring portion being positioned in said
first portion of said passageway.
2. An electrical connector in accordance with claim 1 wherein said
enlarged slotted section is champhered at said end of said housing
for facilitating insertion of said contact terminal in said
insulator member.
Description
The invention relates in general to hermaphrodite electrical
connectors and, more particularly, to a pair of electrical
connectors formed of a single block of insulating material and a
plurality of contacts mounted therein, of single piece
construction.
BACKGROUND OF THE INVENTION
With the advent of pre-fabricated housing construction it has been
found that certain economies can be achieved by having room
partitions pre-wired. Thus, adjacent partitions can be
interconnected by pre-wired paneling, minimizing the need for an
electrician during construction of the housing. Conventional prior
art electrical power connectors previously have either been too
complex and, thus, raising the cost of the housing construction, or
did not provide the reliability necessary in housing construction
which was required. A typical prior art electrical connector having
identical male and female portions is depicted in U.S. Pat. No.
3,072,340. These connectors contained a plurality of modules which
are identical for the male and female mating members. However, the
structure of the insulator housing is relatively complex, requiring
a high degree of molding skill. Moreover, the contact utilized in
this housing was not sufficiently supported in the connector
housing to provide the desired degree of mating reliability. The
contact surfaces of the mating contact were both free standing and,
thus, it was uncertain as to whether or not desired mating of the
contacts would occur.
In order to overcome the attendant disadvantages of prior art
hermaphrodite construction in electrical connectors, the present
invention utilizes relatively simple insulator construction which
can be easily molded at a very low cost. Moreover, the contacts
utilized in the connector are of relatively simple construction and
may be easily stamped out of conventional conductive material. The
contact is mounted and supported in the housing so as to readily
provide the desired contact reliability by the mating of the
contacts. Moreover, the contacts can be removed from the housing so
that conductors can be secured to the contacts externally of the
connector housing.
The advantages of this invention, both as to its construction and
mode of operation will be readily appreciated as the same becomes
better understood by reference to the following detailed
description when considered in connection with the accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 depicts a perspective view showing a pair of the
hermaphrodite connector members in axially aligned, opposed
relationship, ready to be engaged with each other;
FIG. 2 illustrates a perspective view of a preferred contact
terminal employed in the present invention before attachment of a
conductor thereto, as by crimping;
FIG. 3 shows a rear elevation of one of the connector members of
FIG. 1;
FIG. 4 is a vertical section of the connector housing taken along
the line 4--4 of FIG. 3;
FIG. 5 illustrates a fragmentary vertical section illustrating a
pair of opposed axially aligned insulator members with the contact
terminals operatively positioned therein; and,
FIG. 6 shows a sectional view similar to FIG. 5 with the insulator
connector members and connector terminals operatively
interengaged.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring now to FIG. 1, there is shown a pair of connector housing
members 12 adapted to be mated with each other. Each of the members
12 are identical and are illustrated in FIG. 1 with their front
ends adjacent to each other, but rotated 180.degree. with respect
to each other. Each of the connector members 12 are depicted as
having a generally square outer housing portion 14 for positioning
contact terminals 15 of the type as shown in FIG. 2. It should be
understood, of course, that while the housing member 14 is square,
other configurations, of course, are possible should it be desired
to mount six contact members in the housing the shape could vary
and the housing would be rectangular. The housing members are made
of thermoplastic material or other non-conductive or insulating
type materials, which can be easily molded.
The front top half of the housing shown on the left side of FIG. 1
is removed so as to leave a generally U-shaped front portion 16 of
the housing having a pair of side walls 18, 20 and a bottom wall
21. Of course, when the member 12 is rotated 180 degrees as shown
on the right side of FIG. 1, the front bottom half of the connector
would appear to be removed. The side walls 18, 20 terminate at a
rearwardly extending surface 22, 24, the surface extending back to
a shoulder surface 26, which defines the end of the housing that
has been removed.
The top wall 28 of the housing has a projection 32 which extends
from approximately the center of the top wall 28 flush to the rear
end 34 of the housing. The bottom surface of the housing contains a
cavity 36 which is formed in the bottom wall 38 of the housing and
extends from approximately the center of the bottom wall rearwardly
to the end surface 34 of the member. As can be readily seen, the
projection 32 can be inserted into the cavity 36 so that a
plurality of connector members 12 can be ganged together. Moreover,
it should be noted that similar type projections and cavities could
be formed on the side walls 42 of the housing, but these
projections and cavities have not been illustrated for reasons of
clarity.
Each of the connector members 12 are shown containing a plurality
of axially aligned passageways 44 into which the contacts 15 are
mounted. Each of the passageways are of generally square shape and
contain a top wall 46, a bottom wall 48, and a pair of side walls
52, 54. At approximately the center of the side walls, enlarged
slot portions 56 are provided for insertion of the contact into the
housing. The slot portions may be champhered at the rear end 34 as
at 58 so as to facilitate insertion of the contact members. The top
wall 46 extends into the housing until it reaches a rearward facing
shoulder 62. The bottom wall 48 extends into the housing a slightly
greater distance than the surface 46 and terminates at a rearward
facing shoulder 64. The bottom wall then extends forwardly as at
66. The top wall then extends forwardly from the shoulder 62 as at
68 until it reaches a forward facing shoulder 72.
Each of the slots 56 extend into the connector housing until
approximately the forward facing shoulder 72, at which point they
terminate in a rearward facing shoulder 74. The U-shaped portion of
the housing 18, 20, 21 terminates at a forward facing inner surface
76. In the two cavities defined by the U-shaped housing portion 18,
20, 21 a surface 78 extends between the forward facing shoulder 72
and the surface 76. Where the housing portion has been removed, the
cavity walls are extended to the front surface of the housing by
means of a pair of generally square shaped housing portions having
a top wall 82, a bottom 84, and common central wall 86 and a pair
of side walls 88, 92. The inner surface 94 of the top wall 82
terminates at the forward facing shoulder 98 formed in a plane
parallel to the surface 76.
One corner of the passageways 44, shown in FIGS. 1 and 3 for
illustration purposes as being the junction of bottom wall 48 and
side wall 54 contains an angular portion 199 which prevents the
contact 16 from being inserted in the incorrect orientation by
reducing the width of a portion of the passageway 44.
The contact 16, shown in greater detail in FIG. 2, is normally
stamped from a high strength copper alloy. Further, the contact is
formed of a generally flat metal portion having an enlarged width
mounting flange 102 which is connected at its rear to a terminal
barrel 104 by means of a transition portion 106. Typically, a
conductor 108 has its wires 112 bared and inserted into the
terminal barrel 104. Extending forwardly from the mounting flange
is a reduced width body portion 114 having a mating surface 116.
The front end of the contact is generally V-shaped, as defined by a
pair of folds 118, 122. The portion 118 is connected to the body
portion 114 by a slightly angular interlocking portion 124. The
front tip 126 of the contact is generally a smooth, curved surface
and defines the front ends of the two folds 118, 122. The rear end
of the fold 122 defines a spring leaf portion 128 which is bent at
a slight angle with respect to the fold 122. Each of the contacts
15 are inserted from the rear of the housing with the ends of
mounting flange 102 seated in the slots 56. The fold 122 is of
sufficient width that it will only seat in the side walls 52, 54 of
the cavity which are not reduced by the angular portion 199.
The contact 15 is inserted in the passageway 44 until the front
surface of the mounting flange 102 abuts the rearward facing
shoulder 74. At this point, the end of the leaf spring abuts the
forward facing shoulder 72 as shown in FIG. 5. Then, the two
connector housings are mated together as shown in FIG. 6. The
surfaces of the fold 118 abut each other until they are firmly
positioned so that each of the surfaces of the fold abut the mating
surface 116 of the body portion. In this position, as shown in FIG.
6, the angular interlocking portions 124 prevent the contacts from
being separated unless a sufficient separation force is imparted to
the connector housings.
To remove the contact it is only necessary to depress spring leaf
portion 128 with a simple tool inserted in the front end of the
housing. Then, the contact can be removed from the rear of the
housing.
* * * * *