U.S. patent number 3,573,716 [Application Number 04/786,954] was granted by the patent office on 1971-04-06 for connector housing having means for mounting in a panel opening.
This patent grant is currently assigned to AMP Incorporated. Invention is credited to William Joseph Garver.
United States Patent |
3,573,716 |
Garver |
April 6, 1971 |
CONNECTOR HOUSING HAVING MEANS FOR MOUNTING IN A PANEL OPENING
Abstract
Electrical connector housing has improved means for mounting in
a panel opening comprising a pair of trusslike structures on
opposite sides of the housing. Each trusslike structure comprises
diagonally extending beams and a ridge piece which extends between
the beams and is integral with their ends. Mounting of the housing
in a panel is achieved by inserting the housing though the opening
until the surface portions of the panel which are adjacent to the
opening engage the beams thereby to resiliently deform the
trusslike structures until the ridge pieces of the structures are
coplanar with the plane of the panel at which time the resiliently
deformed beams urge the ridge pieces against the edges of the panel
opening and maintain the housing in position.
Inventors: |
Garver; William Joseph
(Harrisburg, PA) |
Assignee: |
AMP Incorporated (Harrisburg,
PA)
|
Family
ID: |
25140043 |
Appl.
No.: |
04/786,954 |
Filed: |
December 26, 1968 |
Current U.S.
Class: |
439/557;
439/353 |
Current CPC
Class: |
H01R
13/743 (20130101); H01R 13/6273 (20130101) |
Current International
Class: |
H01R
13/74 (20060101); H02b 001/02 () |
Field of
Search: |
;339/91,126 (R)/
;339/128 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Purser; Ernest R.
Claims
I claim:
1. An electrical connector housing comprising a block of insulating
material having contact-receiving cavity means extending
therethrough parallel to the axis thereof, said housing having
mounting means on at least one side of said housing to mount said
housing in a panel opening, said mounting means comprising:
a trusslike structure comprising diagonal beams and a ridge piece,
said beams extending diagonally from said housing and being
integral with said ridge piece, said beams being offset with
respect to each other on opposite sides of said ridge piece and
holding said ridge piece in spaced relationship to said side of
said housing, said beams being axially flexible towards said
housing whereby,
upon insertion of said housing into a panel opening until surface
portions of said panel engage said mounting means, said beams are
flexed to permit location of said ridge piece is substantially
coplanar relationship with said panel, and said beams resiliently
urge said ridge piece against edge portions of said opening thereby
latching said housing to said panel.
2. A connector housing as set forth in claim 1 including opposed,
spaced-apart shoulder means on opposite sides of said ridge piece,
said shoulder means being adapted to bear against opposite sides of
said panel.
3. A connector housing as set forth in claim 1 wherein said housing
has two mounting means on diametrically opposite sides thereof.
4. An electrical connector housing comprising a block of insulating
material having contact-receiving cavity means extending
therethrough parallel to the axis thereof, said housing having
mounting means on two opposite sides thereof for mounting said
housing in a panel opening, each of said mounting means
comprising:
a truss structure comprising diagonal beams and a ridge piece, said
beams extending diagonally from said housing and being integral
with said ridge piece, said beams being offset, with respect to
each other, on opposite sides of said ridge piece, said truss
structure being resiliently deformable to permit relative movement
of said ridge piece towards said housing; and
opposed, spaced-apart shoulders on opposite sides of said ridge
piece, said shoulders being spaced apart by a distance greater than
the thickness of the panel in which said housing is to be mounted;
and
said ridge pieces having oppositely facing surfaces which are
spaced apart by a distance greater than a transverse dimension of
the panel opening in which said housing is to be mounted
whereby,
upon insertion of said housing into said panel opening, said truss
structures are resiliently deformed until said oppositely facing
surfaces bear against edge portions of said panel opening, said
truss structures urging said surfaces against said edge portions to
restrain said housing against lateral movement and said shoulders
restraining said housing against axial movement relative to said
panel.
Description
BACKGROUND OF THE INVENTION
Multicontact electrical connectors of the type used in the
automotive, business machine, appliance, television and in similar
industries frequently comprise a unitary molding of suitable
plastic, such as nylon, having a plurality of contact-receiving
cavities extending therethrough for the reception of electrical
contact terminals. It is frequently necessary or desirable to mount
one of the parts of the connector assembly, either the plug or the
receptacle, in a panel such as the firewall of an automobile or an
internal panel of a business machine and it is common practice to
provide integral mounting means on one or both of the connector
parts to achieve such mounting. The instant invention is directed
to the achievement of an improved panel-mounting means for a
connector housing which is rugged and durable, which can be
provided on the connector-housing part as an integral part thereof
during the molding process, which will maintain the housing part in
the panel with a high degree of rigidity and firmness, and which
provides other advantages apparent from the description of the
preferred embodiment presented hereinbelow.
It is accordingly an object of the invention to provide an improved
multicontact electrical connector assembly. A further object is to
provide a connector housing having improved mounting means thereon
for mounting the housing in a panel opening. A still further object
is to provide a mounting means for a connector housing which
permits mounting of the housing in the panel opening from either
side of the panel. A still further object is to provide a mounting
means which permits mounting of the housing in panels of varying
thickness. A further object is to provide a connector-mounting
means which is rugged and durable and which is resistant to
overstressing.
These and other objects of the invention are achieved in a
preferred embodiment thereof comprising a molded connector housing
having a pair of trusslike structures on opposite sides thereof
which comprise the mounting means for the housing. The trusslike
structures each have a plurality of diagonally extending beams and
a transversely extending strap or ridge piece to which the ends of
the diagonal beams are attached. When the housing is to be mounted
in a panel opening, it is inserted into the opening until the edge
portions of the opening engage the sides of the beams and deform
the trusslike structures to permit passage of the housing
therethrough until the ridge piece lies in the plane of the panel.
The beams then urge the ridge piece against the edge of the panel
opening and maintain the housing in position. By virtue of the fact
that the beams are held in a resiliently deformed condition, they
function as springs biasing the ridge piece against the edge of the
panel opening thus providing a firm, vibration resistant, mounting
for the housing. In the preferred embodiment, oppositely directed
shoulders are provided on each side of the ridge piece which are
adapted to bear against portions of the panel surface immediately
adjacent to the opening in which the housing is mounted. These
shoulders provide a high degree of resistance to removal when the
housing is subjected to an axial force such as is imposed when the
mounted housing part is engaged with the free hanging housing
part.
In the drawings:
FIG. 1 is a perspective view of a connector assembly in accordance
with the invention.
FIG. 2 is a side view of a connector assembly in accordance with
the invention.
FIG. 3 is a top plan view taken along the lines 3-3 of FIG. 2
looking down on the mounting means by which retains the housing in
the panel opening.
FIG. 4 is an enlarged fragmentary perspective view of a mounting
means in accordance with the invention illustrating the manner in
which the core pins are arranged when the housing part is
molded.
Referring to FIGS. 1--3, a preferred form of connector assembly in
accordance with the invention comprises a plug part 4, and a
receptacle part 2, the plug part being mounted in an opening 38 of
a panel 36. The plug 4 comprises a block 6 of insulating material,
such as nylon, having a mating face 8 and a rearward face 10. A
plurality of contact receiving cavities 12 extend axially through
the block from the rearward face to the mating face and are adapted
to receive contact terminals which are crimped onto wires 16. The
plug 4 contains contact sockets 14 which are adapted to receive the
projecting ends of contact pins 14' contained in the receptacle
part 2 of the connector assembly.
Block 6 has upper and lower sides 15, 17, on which the mounting
means are provided, and sides 18, 20 on which latch arms 22 are
provided. The latch arms 22 are generally flat platelike members
connected to the sides of the housing by spaced-apart hinges 19,
the location and thickness of these hinges being such that when the
rearward ends 21 of the arms 22 are depressed, the forward ends
will be moved away from the side of the housing. The undersides of
the latch arms 22 are provided with longitudinally extending
grooves 23 which define rearwardly facing shoulders 25. These
shoulders are adapted to cooperate with the barbed ends 52 of latch
arms 48 which are mounted on the corresponding sides of the
receptacle 2 as will be described below.
Mounting means 24 are provided on each of the sides 15, 17 of the
housing adjacent to the rearward face 10, each of these mounting
means being in the form of a trusslike structure comprising
diagonally extending beams 26, 28, 30, (which are analogous to the
rafters of a roof truss) and a transversely extending strap or
ridge piece 32. The beams 26, 28 of the plug part 4 are disposed
approximately midway between the faces 6, 8 and are spaced apart
transversely on the upper and lower sides of the block, the beams
30 being adjacent to the rearward face 10 and being opposite to the
gap between the beams 26, 28. This arrangement, of offsetting the
beams relative to the ridge piece 32, facilitates flexure of the
entire mounting structure when the housing part is inserted through
the panel opening. It will be understood, however, that this offset
arrangement is not essential to the practice of the invention and
that sufficient flexure in the beams can be achieved by reducing
their width or thickness.
The ends of the beams which are integral with the ridge piece 32
are formed to define oppositely directed shoulders 34, two such
shoulders being provided on the beams 26, 28 and a centrally
disposed shoulder being provided on the beam 30. These shoulders
are spaced apart by a distance substantially equal to, and slightly
greater than, the thickness of the thickest panel in which it is
intended to mount the housing.
The opening 38 in the panel 36, which is adapted to receive either
the plug part 4 or the receptacle part 2, is generally rectangular
but has recesses 40 on two opposite sides for the accommodation of
the latch arms 22, in the case of the plug 4, or the latch arms 48
of the receptacle 2. The edges 42 of the remaining sides of the
opening 38 are spaced apart by a distance slightly less than the
distance separating the oppositely directed surfaces 44 of the
ridge pieces 32 of the mounting structures.
It will thus be apparent that when it is desired to mount the plug
4 in the opening 38, it is merely necessary to align the plug with
the opening and move it against the edges 42 until these edges snap
into the space between the shoulders 34. The inclined surfaces of
the beams 26--30 facilitate the elastic deformation of the mounting
trusses as the block moves progressively through the opening and
the beams will be flexed towards the surfaces 15, 17 during such
movement to permit the ends of the beams to move through the
opening until the parts achieve the position of FIGS. 2 and 3.
By virtue of the fact that the edges 42 of the panel opening are
spaced apart by a distance which is less than the distance between
the surfaces 44 of the mounting trusses, some residual elastic
deformation will remain in the mounting trusses and the beams will
function to urge the surfaces 44 against the edges 42 of the
opening thereby to retain the housing firmly in position. The
spacing between the edges 42 of the panel opening is not
dimensionally critical since the mounting trusses can be
elastically deformed to varying degrees for openings of different
sizes. It should also be noted that the thickness of the panel is
not critical since the thickest panel in which the housing 4 can be
mounted should have a thickness slightly less than the distance
between the shoulders 34, in other words, the width of the ridge
piece 32. However, housings in accordance with the invention can be
mounted in panels having a thickness substantially less than the
distance separating these shoulders.
The receptacle part 2 of the connector assembly is similar in many
respects to the plug and need not be described in detail.
Corresponding structural parts of the receptacle are therefore
identified by the same reference numerals (differentiated by prime
marks) as those used in the foregoing description of the plug part
4. The receptacle part 2 differs from the plug part 4 in that it
has an integral hood 44 extending from the mating face 8', this
hood surrounding the projecting ends of the contact pins 14'
mounted in the cavities 12'. The latching means, for latching the
two parts together, on the receptacle 2 comprises relatively thin
arms 48 integral with the sides 18, 20 as shown at 50. The width of
these arms 48 is such that they will pass between the supporting
columns 21 of the plug part until their barbed ends 52 lodge behind
the previously-described shoulders 25 of the latch arms 22. It will
thus be apparent that when the receptacle is moved relatively
towards the plug, the latching means will engage and hold the parts
in assembled relationship to each other.
The mounting truss structures 24' of the receptacle 2 are
substantially identical to the structures previously described and
again need not be described in detail. Since the disclosed
embodiment has mounting trusses on both the plug and the
receptacle, either part can be mounted in the panel 36 and can be
assembled to the panel from either side thereof. Under some
circumstances, mounting trusses may be provided on only one of the
connector parts.
A mounting means in accordance with the invention has several
distinct advantages, only some of which are noted above. One
advantage is that the housing part on which the mounting truss
means are provided can be mounted in, or removed from, the panel
from either side thereof. This is a distinct advantage from a
manufacturing standpoint in that it reduces the number of types of
housings which must be stocked for a machine or apparatus being
assembled with predetermined manufacturing steps. Additionally,
when servicing is necessary, the technician can remove the housing
from the panel from the most convenient and accessible side
thereof.
Mounting trusses in accordance with the invention can be
dimensioned, as to the width of the beams and the thickness of
these members, to provide any desired amount of rigidity; if it is
desired to discourage removal of the housing from a panel without
the aid of special tools, these beams can be made relatively thick
and wide and can be positioned in alignment with each other to form
a relatively rigid truss member which is deformable only to the
extent necessary to permit mounting of the housing in the panel
opening. Alternatively, if it is desired to have the housing
readily removable from the panel, the beams can be relatively thin
and/or narrow.
Mounting means in accordance with the invention are particularly
advantageous in that the panel-mounted connector part is very
firmly secured in the panel against axial forces. Referring to FIG.
2, it will be apparent that when the receptacle is mated with the
mounted plug by rightward movement of the receptacle from the
position shown, the plug will be subjected to axial forces on its
mating face tending to push it rightwardly from the panel opening.
As these forces are applied during the mating operation, the plug 4
may move rightwardly, within the limits permitted by the panel
thickness and the distance separating the shoulders 34, until the
left-hand shoulders on the beams 26, 30 bear against surface
portions of the panel immediately adjacent to the opening. Upon
imposition of still higher forces, as the contact pins in the
receptacle enter the contact sockets in the plug, compressive
stresses will be developed in the left-hand beams 26, 28 but the
compressive loading of these left-hand beams does not constitute
the only reaction force developed in the housing resisting the
tendency toward removal. By virtue of the presence of the ridge
piece or strap 32, the right-hand beam 30 will be placed in tension
so that the entire truss structure is stressed and all its parts
resist removal.
It should also be pointed out that the imposition of repeated axial
forces on the mounted connector part (as when the parts are mated
or disengaged) does not result in any change to the truss
structures which would detract from their ability to retain the
part in the panel opening firmly and without allowing vertical
movement or "rattling." In other words, the truss structures cannot
be overstressed in a manner which would result in a loose mounting
of the connector part in the panel. Unconnected mounting ears, as
known to the prior art, can be overstressed by the application of
axial forces to the mounted connector part resulting in a loose
mounting which permits lateral movement of the portion in the panel
opening.
A further advantage, which is highly significant from a
manufacturing standpoint, is that a mounting truss in accordance
with the invention can be formed integrally with the housing 6 by a
relatively simple molding operation. Referring to FIG. 4, it can be
seen that the injection mold cavity in which the housing 4 would be
formed, can be provided with core pins lying in the general areas
indicated by the arrows. Thus one core pin could be provided
between the beams 26, 28 and would extend beneath the beam 30. Two
core pins would be provided on the opposite side of the mold on
each side of the beam 30 and extending beneath the beams 26, 28.
These core pins would extend parallel to the core pins which form
the contact cavities 12 in a mold and would extend normally of the
parting line of the mold. Simple, straight-action, molding
processes of this type permit extremely low manufacturing costs and
thereby reduce the overall cost of a connector in accordance with
the invention.
Changes in construction will occur to those skilled in the art and
various apparently different modifications and embodiments may be
made without departing from the scope of the invention. The matter
set forth in the foregoing description and accompanying drawings is
offered by way of illustration only.
* * * * *