U.S. patent number 3,869,191 [Application Number 05/405,450] was granted by the patent office on 1975-03-04 for connector means having shorting clip.
This patent grant is currently assigned to General Motors Corporation. Invention is credited to Emil J. Tolnar, Jr., Arthur H. Winyard.
United States Patent |
3,869,191 |
Tolnar, Jr. , et
al. |
March 4, 1975 |
CONNECTOR MEANS HAVING SHORTING CLIP
Abstract
In a preferred form, this disclosure relates to an electrical
connector means comprising a pair of mating connector assemblies
and in which one of the connector assemblies has a shorting clip
which is biased into engagement with its associated metal terminals
to provide a short thereacross when the connector assemblies are
disconnected and is automatically disengaged from its associated
metal terminals when the mating connector assemblies are connected
together. The shorting clip is in the form of a one-piece spring
clip which is self-biased toward a position in which it engages its
associated terminals so that a short across the terminals is
automatically provided when the connector assemblies are disengaged
from each other and the other connector assembly includes a cam
means for lifting the spring biased shorting clip out of engagement
with its associated terminals subsequent to the mating terminals of
the connector assemblies engaging one another when the connector
assemblies are connected together.
Inventors: |
Tolnar, Jr.; Emil J. (Warren,
OH), Winyard; Arthur H. (Cortland, OH) |
Assignee: |
General Motors Corporation
(Detroit, MI)
|
Family
ID: |
23603747 |
Appl.
No.: |
05/405,450 |
Filed: |
October 11, 1973 |
Current U.S.
Class: |
439/186; 439/188;
439/345; 439/660 |
Current CPC
Class: |
H01R
29/00 (20130101); H01R 13/64 (20130101) |
Current International
Class: |
H01R
29/00 (20060101); H01R 13/64 (20060101); H01r
013/12 () |
Field of
Search: |
;339/19,182,111,91,147
;200/51.1 |
References Cited
[Referenced By]
U.S. Patent Documents
Primary Examiner: Moore; Richard E.
Attorney, Agent or Firm: Schuetz; W. A.
Claims
It is claimed:
1. An electrical connector means comprising: a first insulator
housing having a plurality of first spaced apart cavities therein,
a first plurality of metal terminals housed in said first cavities
and having exposed forward end portions, a second cavity in said
first insulator housing, a spring clip housed within said second
cavity, said spring clip having a bridge portion extending
transversely of the cavity and a plurality of spaced resilient
fingers extending transversely of the bridge portion and overlying
the respective ones of the first terminals, said fingers each
having a depending portion which is engaged with one of the first
plurality of terminals to provide a shorting path between the first
plurality of terminals, said spring clip when disposed in the
second cavity being self-biased toward a position in which their
depending portions engage the respective first plurality of
terminals, a second insulator housing which is matable with the
first insulator housing, said second insulator housing having a
plurality of spaced cavities therein, a second plurality of metal
terminals housed in said cavities of said second insulator housing
which are adapted to mate with the first plurality of terminals in
the first insulator housing, said second insulator housing having a
cam means intermediate its ends, said insulator housings when being
connected together first causing said first and second plurality of
terminals to matingly engage each other and then causing said cam
means on said second insulator housing to engage the spring fingers
of the spring clip to move the spring fingers in opposition to
their self-biasing forces to disengage the spring clip from the
first plurality of terminals.
2. An electrical connector means comprising: a first insulator
housing having a plurality of first spaced apart cavities therein,
a first plurality of metal terminals housed in said cavities and
having exposed forward ends, said insulator housing having a
plurality of transverse through slots in communication with said
cavities, a second cavity in said first insulator housing, a spring
clip housed within said second cavity, said spring clip having a
bridge portion extending transversely of the second cavity and a
plurality of spaced resilient fingers extending transversely of the
bridge portion and overlying the first cavities in the first
insulator housing, said fingers being bent to form a ramp surface
adjacent their forward ends remote from the bridge portion and
which forms an acute included angle with the adjacent insulator
housing, said fingers each having a depending portion which is
adapted to extend through one of the slots in the first insulator
housing to engage the respective first plurality of terminals
rearwardly of their forward ends to provide a shorting path between
the first plurality of terminals, said spring clip when disposed in
the second cavity being self-biased toward a position in which
their depending portions engage the respective first plurality of
terminals, said first terminals having their forward ends extending
forwardly of the ramp surfaces of said fingers, a second insulator
housing having a forward portion and a rearward portion, said
forward portion having a longitudinally extending opening for
receiving the first insulator housing and said rearward portion
having a plurality of spaced cavities therein in communication with
said opening in the forward portion, a second plurality of metal
terminals housed in said cavities of said rearward portion of said
second insulator housing which are adapted to mate with the first
plurality of terminals in the first insulator housing, said second
insulator housing having a plurality of tapered cam surface
intermediate its ends, said first insulator housing being
connectable to the second insulator housing by inserting the first
insulator housing into the opening of the forward portion of the
second insulator housing, said insulator housings when being
connected together first causing said first and second plurality of
terminals to matingly engage each other and then causing said
tapered cam surfaces on said second insulator housing to engage the
ramp surfaces of the spring clip to move the spring fingers in
opposition to their self-biasing forces to disengage the spring
clip from the first plurality of terminals.
3. An electrical connector means comprising: a first insulator
housing having a main body portion and a projecting end portion of
a lesser height than the main portion, said first insulator housing
having a plurality of first spaced apart cavities therein, a first
plurality of metal terminals housed in said first cavities and
extending within the projecting end portion thereof, said insulator
housing having a plurality of transverse through slots in
communication with said first cavities, a second cavity in said
first insulator housing, a spring clip housed within said second
cavity, said spring clip having a bridge portion extending
transversely of the cavity and a plurality of spaced resilient
fingers extending transversely of the bridge portion and overlying
the first cavities in the projecting end portion of the first
insulator housing, said fingers being bent to form a ramp surface
adjacent their forward ends remote from the bridge portion and
which forms an acute included angle with the adjacent projecting
end portion of the first insulator housing, said fingers each
having a depending ear which is adapted to extend through one of
the slots in the first insulator housing to engage the respective
first plurality of terminals to provide a shorting path between the
first plurality of terminals, said spring clip when disposed in the
second cavity being self-biased toward a position in which their
ear engages the respective first plurality of terminals, said first
terminals having forward ends which extend forwardly of the ramp
surfaces of said fingers, a second insulator housing having a
forward portion and a rearward portion, said forward portion having
a longitudinally extending opening for receiving the projecting end
portion of the first insulator housing and said rearward portion
having a plurality of spaced cavities therein in communication with
said opening in the forward portion, a second plurality of metal
terminals housed in said cavities of said rearward portion of said
second insulator housing which are adapted to mate with the first
plurality of terminals in the first insulator housing, said second
insulator housing having a plurality of tapered cam surfaces
intermediate its ends, said first insulator housing being
connectable to the second insulator housing by inserting the
projecting portion of the first insulator housing into the opening
of the forward portion of the second insulator housing, said
insulator housings when being connected together first causing said
first and second plurality of terminals to matingly engage each
other and then causing said tapered cam surfaces on said second
insulator housing to engage the ramp surfaces of the resilient
fingers of the spring clip to move the spring fingers in opposition
to their self-biasing forces to disengage the spring clip from the
first plurality of terminals, and cooperable latching means on said
first and second insulator housings for latching the housings
together when connected.
Description
The present invention relates to an electrical connector means, and
in particular to an electrical connector means comprising a pair of
mating connector assemblies, and in which a shorting clip is
automatically disengaged from its associated metal terminals in one
of the connector assemblies when the mating connector assemblies
are connected together and automatically re-engages with its
associated metal terminals when the connector assemblies are
disconnected.
In the handling of electrically energizable charges or explosives,
it is common practice to provide a short across the wires or leads
connected to the charge prior to usage thereof. The short
eliminates the possibility of static electricity or RF interference
from generating a current flow or voltage drop across the leads
which could produce premature or accidental actuation of the
charge. It is also known to employ an electrical connector means
comprising mating connector assemblies in the electrical control
circuitry for the charge. One of the connector assemblies would be
operatively connected to the charge and include a shorting means
for bussing its associated terminals or leads when the connector
assemblies are disconnected from each other. The other of the
connector assemblies would be operatively connected with an
electrical control means of circuitry and include a means for
disengaging the shorting means from its associated terminals or
leads when the connector assemblies are connected together or
mated. For example, see U.S. Pat. Nos. 3,036,169; 3,275,765, and
3,491,326.
The present invention provides a new and improved electrical
connector means of the above noted general type. Although the
electrical connector means of the present invention could be used
in various applications wherein it is desired to automatically
provide for a bussing of terminals of a connector assembly
connected to an electrically energizable device when the two mating
connector assemblies are disconnected, it is particularly
susceptible for use with an air cushion restraint system having a
squib for igniting a charge to burst a diaphragm for controlling
communication between a pressure vessel and an inflatable bag
and/or having electrical igniter means for energizing gas
generators located within the pressure vessel.
The novel connector means of the present invention, when used in an
air cushion restraint system, has one connector assembly provided
with a shorting means for bussing its associated terminals. This
connector assembly is adapted to be electrically connected via
conductors to the squib for the charge and/or the electrical
energizing means for the gas generator or generators. The other
connector assembly would be connected in circuit with the control
means including sensor switches for actuating the restraint system
when predetermined conditions are present. The provision of the
shorting means for bussing the various terminals of its associated
connector assembly enables the various components of the air
cushion restraint system to be assembled in an automotive vehicle
without any premature or accidental actuation of the system due to
static electricity, RF interference etc. Also, when the mating
connector assemblies are connected together, the respective
terminals in the connector assemblies are first engaged with each
other prior to the other connector assembly disengaging the
shorting means from its associated terminals of the one connector
assembly.
Accordingly, an important object of the present invention is to
provide a new and improved electrical connector means of the above
noted type and in which the shorting means carried by one of the
connector assemblies is in the form of a spring clip which is
self-biased toward a position in which it engages its associated
terminals so as to automatically provide bussing across the
terminals when the connector assemblies are disconnected and in
which the other connector assembly includes cam means which engage
the spring biased shorting clip to automatically disengage the
shorting clip from its associated terminals subsequent to the
mating terminals of the connector assemblies engaging each
other.
A more specific object of the present invention is to provide a new
and improved electrical connector means comprising a pair of mating
connector assemblies each having an insulator housing and a
plurality of spaced metal terminals therein which are adapted to
mate with each other when the connector assemblies are connected
together, and in which one of the connector assemblies includes a
spring clip which cooperates with the insulator housing so that it
is self-biased toward a position in which it engages its associated
metal terminals when the connector assemblies are disconnected to
provide a short thereacross to prevent premature or accidental
actuation of an electrically actuated means operatively connected
with the terminals, and in which the other of the connector
assemblies includes cam surfaces on its insulator housing which
functions to move the spring clip in opposition to its self-biasing
force to disengage it from its associated terminals subsequent to
the mating terminals of the connector assemblies engaging one
another.
Advantages of the novel electrical connector means of the present
invention are that it is of a relatively economical and simple
construction, that the connector assemblies can be readily
connected and that the connector assemblies are securely locked
together when connected.
The present invention further resides in various novel
constructions and arrangement of parts, and further objects, novel
characteristics and advantages of the present invention will be
apparent to those skilled in the art to which it relates and from
the following detailed description of the illustrated embodiments
thereof made with reference to the accompanying drawings forming a
part of this specification and in which similar reference numerals
or characters are employed to designate corresponding parts
throughout the several views, and in which:
FIG. 1 is an enlarged top plan view of the novel electrical
connector means of the present invention and showing the respective
connector assemblies being disengaged from one another;
FIG. 2 is a cross-sectional view of one of the electrical connector
assemblies shown in FIG. 1 and taken approximately along line 2--2
thereof;
FIG. 3 is a side elevational view of one of the electrical
connector assemblies shown in FIG. 1 and looking in the direction
of the arrows thereof 3--3;
FIG. 4 is an end elevational view of one of the electrical
connector assemblies shown in FIG. 1 and looking in the direction
of the arrows 4--4 thereof;
FIG. 5 is an enlarged top plan view of a shorting clip comprising
part of the electrical connector means of the present invention and
showing the same after it is blanked from strip stock;
FIG. 6 is a perspective view of the shorting clip of FIG. 5 and
showing the same bent to its final free state configuration;
FIG. 7 is an end elevational view of the other connector assembly
shown in FIG. 1 and looking in the direction of the arrow 7--7
thereof;
FIG. 8 is a cross-sectional view of the connector assembly shown in
FIG. 7 and taken approximately along line 8--8 thereof;
FIG. 9 is a cross-sectional view of the connector assembly shown in
FIG. 7 and taken approximately along line 9--9 thereof;
FIG. 10 is a top plan view of an electrical connector means of the
present invention and showing the respective connector assemblies
connected together;
FIG. 11 is a cross-sectional view of the electrical connector means
shown in FIG. 10 and taken approximately along line 11--11
thereof;
FIG. 12 is a top plan view of an alternative and preferred form of
shorting clip for the novel electrical connector means of the
present invention; and
FIG. 13 is a side elevation view of the shorting clip shown in FIG.
12 and showing the same located within its associated connector
housing.
The novel electrical connector means 10 of the present invention
broadly comprises a pair of mating connector assemblies 12 and 14.
The connector assembly 12 comprises a male insulator housing 16
which carries a plurality of spaced male blade terminals 18
therein. The connector assembly 14 comprises a female insulator
housing 20 for carrying a plurality of spaced female terminals 22
therein. The male connector assembly 12 also carries a shorting
spring clip 24 which is self-biased toward a position in which it
engages the respective male terminals 18 to provide a short
thereacross when the connector assemblies 12 and 14 are
disconnected from one another and the female connector assembly 14
has cam means 26 which function to engage the spring clip 24 to
disengage it from its respective male terminals 18 subsequent to
the female terminals 22 engaging the male terminals 18 when the
connector assemblies 12 and 14 are connected together. The
connector assemblies 12 and 14 are retained in their engaged
position by a cooperable latching means 30.
Referring to FIGS. 1 through 4, the male insulator housing or body
16 of the connector assembly 12 is made from a suitable dielectric
material, preferably plastic, and is of a generally rectangular
shape. The insulator housing 16 comprises a rearward or main body
portion 32 and a forward or projecting portion 34 of a lesser
height, as viewed in FIG. 2, than the main body portion 32. The
insulator housing 16 also includes a pair of integral annular
bushings 38 at its opposite sides which are provided with central
through apertures 40. The apertures 40 in the bushings 38 enable
the insulator housing 16 to be suitably mounted to a printed
circuit board (not shown) via suitable fasteners (not shown) which
extend through the apertures 40 and are secured to the circuit
board.
The male insulator housing 16 includes a plurality of spaced apart
longitudinally extending through cavities or openings 44
therethrough for receiving the male blade terminals 18. The
adjacent cavities 44 are separated by housing wall portions 45 and
the cavities 44 include a pair of aligned rectangularly shaped
grooves 46 formed in the housing wall portions 45 on the opposite
lateral sides of the cavities 44. The grooves 46 of each cavity 44
slidably receive a male blade terminal 18 along its opposite
lateral sides. The forward or projecting portion 34 of the housing
includes laterally spaced apart forwardly extending sections 48
integral at their rearward end with the wall portions 45 of the
main housing portion 32. The sections 48 have aligned rectangularly
shaped grooves 49 extending along their entire length and which are
aligned with the grooves 46. The grooves 49 are of a lesser height
than the grooves 46 and at their juncture, the grooves 46 and 49
define abutments 49a. The adjacent fingers 48 define a guide and
support means for the male blade terminals 18 and with a portion of
the male blade terminals 18 located between the sections 48 being
exposed on their upper and lower sides.
The male blade terminals 18 could be of any suitable or
conventional construction, but are preferably of the type shown and
described in U.S. Pat. No. 3,555,496, issued Jan. 12, 1971, and
assigned to the same assignee as the present invention, and to
which resort may be had for a complete description of the terminals
18. Suffice it for present purposes to say that each male blade
terminal 18 includes a forward portion 50 which is adapted to
engage the female terminal 22, a more rigid intermediate wrapped
portion 52 which is thicker than the forward portion 50 and a
rearward portion 54 which is adapted to be secured or soldered to a
contact on a printed circuit board (not shown). The terminals 18
are connected to the housing 16 by inserting the terminals 18
forward end first into the cavities from left to right, as viewed
in FIG. 2. The opposite lateral sides of the terminals are received
within the grooves 46 and 49 and the terminals 18 are inserted
until the intermediate portion of the male blade terminal 52 abuts
the abutment 49a in the connector housing 16. This prevents over
insertion of the male blade terminals 18. Each male blade terminal
18 also includes a deflectable locking tang 58 adjacent its
intermediate portion 52 which is adapted to ride over and lock
behind an inwardly extending abutment 60 on the connector housing
16 to lock the male blade terminal 18 in place within the connector
housing 16 and to prevent any rearward movement thereof, and in a
manner well known to those skilled in the art.
The insulator housing 16 adjacent its upper side, as viewed in
FIGS. 1 and 2, is provided with a second cavity means 64 which
receives the shorting spring clip 24. The cavity 64 is defined by a
pair of side walls 66, a bottom wall 68 which also forms the top
wall for the respective cavities 44, and a top side 70. The top
side 70 includes a pair of top wall portions 72 integral with the
side walls 66 and a generally U-shaped catch member 78 of the
cooperable latching means 30. As further shown in FIG. 2, the
cavity 64 is further defined by a rearward upwardly extending wall
portion 79 at the rearward end of the housing 16.
As best shown in FIGS. 5 and 6, the spring clip 24 is of a
one-piece construction and is made from a suitable resilient or
deflectable spring metal material. The spring clip is initially
stamped from sheet stock to the configuration shown in FIG. 5 by a
suitable punch and die apparatus and is thereafter bent to the
configuration shown in FIG. 6 by a suitable press and die
apparatus. The shorting clip 24 has a transversely extending flat
bridge portion 80, a first plurality of elongated spaced apart
spring fingers 82 integrally connected at their rearward ends with
the bridge portion 80, and a second plurality of spaced spring
fingers 84 which are shorter than the spring fingers 82 and which
are integrally connected at one end with the bridge portion 80. As
best shown in FIGS. 2 and 6, the spring fingers 82 are slightly
tapered proceeding from their rearward end portion toward their
forward free end portion 86 and are bent upwardly adjacent their
forward end portion 86 to define linear ramp surfaces. The spring
fingers 82 adjacent their forward end portion 86 include downwardly
extending ears 88 which extend transversely of the spring fingers
82. The spring fingers 84 are bent so as to overlie the spring
fingers 82 and define at their juncture with the bridge portion 80
and the spring fingers 82 a rounded bight portion 92. The maximum
transverse distance between the spring fingers 82 and 84 when in
their free state position is greater than the height of the cavity
64, as viewed in FIG. 2.
The shorting clip 24 is adapted to be connected to the insulator
housing 16 by inserting the same bridge end first into the cavity
64 from right to left, as viewed in FIG. 2. As the clip 24 is
inserted into the cavity 64, the fingers 84 engage a downwardly
extending projection 100 integral with the top wall portions 72 and
are deflected toward the fingers 82. The downwardly extending
projection 100 has a tapered entry surface 100a to facilitate entry
of the shorting clip into the cavity 64. When the fingers 84 clear
the projecting portion 100, the self-biasing forces of the spring
clip 24 will cause the fingers 84 to spring back toward their
normal free state position and engage the underside of the top
portions 72 of the housing 16 behind the projections 100. This
prevents movement of the spring clip 24 toward the right, as viewed
in FIG. 2. Movement of the spring clip 24 toward the left is
prevented as a result of the engagement between the bridge portion
80 and a pair of abutments 93 integral with the U-shaped catch
member 78 at its leftward end, as viewed in FIG. 1.
When the spring clip 24 is positioned within the cavity 64 of the
housing 16, the fingers 82 are also deflected upwardly from their
normal free state position due to the engagement between the
depending ears 88 and the male blade terminal 18. The forwardly
projecting portion 34 of the housing 16 is provided with transverse
through slots 94 through which the ears 88 extend so as to enable
them to engage the male blade terminals 18. From the foregoing, it
should be apparent that the self-biasing forces of the spring clip
24 cause the ears 88 to be biased into engagement with the adjacent
male blade terminals 18 such that a bussing or short across the
male blade terminals 18 is established when the male connector
assembly 12 is disconnected from the female connector assembly
14.
As noted hereinbefore, the male blade terminals 18 would be
operatively connected with a squib for an explosively actuated
diaphragm and/or electrical energizable means for a gas generator
or generators of an air cushion restraint system. The provision of
the shorting clip 24 enables these components to be assembled
within an automotive vehicle during assembly while preventing any
premature or accidental actuation of these components due to static
electricity, RF interference, etc.
The female connector assembly 14 comprises the insulated connector
housing 20 which is made from a suitable dielectric material, such
as plastic, and is of a generally rectangular shape complementary
with the male connector assembly 12. The female connector housing
20 has a main or rearward body portion 110, an intermediate body
portion 112, and a forward end portion 114. The rearward portion
110 has a plurality of spaced cavities or longitudinally extending
through openings 116 therethrough for receiving the female
terminals 22. The cavities 116 include upper and lower aligned
longitudinally extending recesses or grooves 116a and 116b formed
in the top and bottom sides 117 and 118 of the housing 20 for
receiving portions of the terminals, as will be hereinafter more
fully described. The individual cavities are separated by
transversely extending wall portions 119.
The female terminals 22 could be of any suitable or conventional
type capable of mating with a male blade terminal 18, but
preferably are of the type shown in U.S. Pat. No. 3,310,772, issued
Mar. 21, 1967, and assigned to the same assignee as the present
invention, and to which resort may be had for a complete and full
description of the terminals 22. Suffice it for present purposes to
say that each female terminal 22 has a rearward portion which
includes a pair of spaced crimped flanges 120 and 122 which are
adapted to be crimped onto the bare end and the insulator portion
of an electrical lead L. The female terminal 22 further includes an
intermediate flat vertically extending body portion 126 and a pair
of fingers or tongues 128 extending perpendicular to the flat
bottom portion 126. The fingers 128 have free end portions 129
which are reversely bent, as indicated at 130, and which are
self-biased into engagement with each other. The male blade
terminals 18 are adapted to be electrically connected to the female
terminals 22 by inserting the forward portion 50 of the male
terminals 18 between the reversely bent finger portions 129 and
with the portion 129 of the fingers 128 biasingly engaging the
opposite sides of the male blade terminals 18.
The female terminals 22 are connected to the insulator housing 16
by inserting the same from right to left into the cavities 116, as
viewed in FIG. 8. Each female terminal has an upwardly extending
tang 140 which is adapted to be received within the upper groove
116a and a deflectable locking tang 142 which is adapted to be
received within the lower groove 116b. When each female terminal 22
is inserted within its associated cavity 116, the deflectable
locking tang 142 will engage a transversely inwardly extending
abutment 148 and be deflected toward the terminal 22 and then
return toward its normal free state position to lock behind the
abutment 148 and thereafter the tang 140 will abuttingly engage a
transversely extending abutment 150 in the housing 16.
The tangs 140, 142 and the abutments 148, 150 lock the terminals 22
in place within the cavities 116 of the housing 20. The
intermediate portion 112 of the connector housing 20 defines a
rectangularly shaped slot 154 which is in communication with the
cavities 116 and which receives the fingers 128 of the female
terminals 22. The rectangularly shaped slot 154 is of a size such
that it slidably receives the main portion 34 of the male housing
16 and with the wall portions 119 of the housing 20 at their front
ends forming abutment surfaces against which the forwardly
extending sections 48 of the male housing 16 can abut.
The forwardly extending portion 114 of the connector housing 20
comprises forwardly extending bottom walls 114a and 114b and a side
wall 114c. The forwardly extending end portion 114 serves as a
slide and support means for guiding the male connector assembly
into the female connector assembly 14.
The male and female connector assemblies 12 and 14 are adapted to
be connected to each other by inserting the forward end of the male
connector assembly 12 into the forward end of the female connector
assembly 14. As the male connector assembly 12 is inserted into the
female connector assembly 14, the forwardly projecting end portion
34 of the male connector assembly 12 will be received within the
rectangular opening 154 in the female connector assembly 14, and
the male blade terminal 18 will be received between and engage the
reversely bent finger portions 129 on the female terminals 22 and
with the finger portions 129 biasingly engaging the male blade
terminals 18.
Further insertion of the male connector assembly 12 into the female
connector assembly 14, causes the forward end of the main portion
34 of the male housing 16 to be received within the slot 154 and
causes the cam means 26 on the female housing 20 to engage the ramp
portions 86 of the fingers 82 of the shorting clip 24 and cam the
fingers 82 upwardly and out of engagement with the male blade
terminals 18. The cam means 26 comprise linearly tapered cam
surfaces located at the forward end of the upper side of the
intermediate portion 112 of the female connector housing 16. The
female connector housing 16 also includes a plurality of spaced
apart longitudinally extending slots 157 extending through its
upper side for receiving the downwardly extending ears 88 of the
shorting clip as the cam surfaces 26 cam the shorting clip 24 out
of engagement with the male blade terminals 18.
From the foregoing, it should be apparent that when the connector
assemblies 12 and 14 are connected together, an electrical
connection is established between the respective male terminals 18
of the male connector assembly 12 and the female terminals 22 of
the female connector 14 prior to the insulator housing 20 camming
the spring fingers 82 of the shorting clip 24 out of engagement
with its associated male blade terminals 18.
When the connector assemblies 12 and 14 are connected together,
they are adapted to be latched in place by the cooperable latching
means 30. To this end, the male connector housing includes a pair
of catch members 78 on its lower end upper sides. The catch members
are of a U-shaped configuration and comprise a pair of legs 160 and
161 which are integral at their forward ends with a bridge portion
162 and which are integral at their rearward ends with the
insulator housing 16. The bridge portions 162 have tapered
projections 163 at their side adjacent the housing 16. The catch
members 78 define transversely extending openings 165 therethrough.
The housing 16 is preferably made from a plastic material which is
somewhat resilient so as to enable the catch members 78 to be
deflected to and from the adjacent sides of the insulator housing
16.
The connector assembly 14 includes at its upper and lower sides
rigid or substantially rigid transversely extending latch members
170. The latch members 170 are bevelled at their forward sides, as
indicated by reference numeral 171. When the connector assemblies
14 and 16 are connected together, the latch member 170 will engage
the catch members 78 along the projections 163 of the bridge
portions 162 and cause the catch members 78 to be deflected
outwardly from the adjacent sides of the connector housing 16. As
the two connector assemblies are connected together, the bridge
portion 162 of the catch members 78 will clear the latch members
170, and due to the self-biasing forces of the catch members 78,
will move toward the connector housing 16 and latch behind the
latch members 170. This securely retains the two connector housings
16 and 20 connected together.
The insulator housing 20 also includes a rear cover 200. The cover
is of a generally curved configuration and is integrally connected
with the top side of the connector housing 20 via a integral hinge
202. The cover includes L-shaped side portions 204 which define
side openings 206. These L-shaped side portions 204 define catch
members which are adapted to be latched to latch members 210
extending outwardly on the main housing portion 110 of the housing
20. The latch members 210 comprise a pair of integral somewhat
resilient fingers 211 having beveled headed ends 212.
After the female terminals 22 and leads L are connected in the
connector housing 16, the cover 200 can be moved from its normal
free state position, as shown in FIG. 8, in which it is disposed
upwardly and out of the way from the rearward end of the housing 20
to a closed position, as shown in FIG. 9, in which it covers the
rearward end of the connector housing 20. As the cover 200 is moved
to its closed position, the catch members 204 will engage the
bevelled headed ends 212 of the fingers 211 and cause the fingers
211 to be deflected toward each other until the catch members 204
clear the headed end 212 of the fingers 211 whereupon the fingers,
due to their self-biasing forces, will move outwardly relatively to
each other and into the opening 206 toward their normal free state
position to latch behind the catch members 204. The cover 200
serves to orient the leads L in a given direction and also serves
to substantially cover the rearward portion of the connector
housing 20.
It will of course be understood that the number of cavities and
terminals contained in the connector assembly 12 as well as the
number of spring fingers 82 employed in the shorting clip 24 will
vary in accordance with the number of electrically operated devices
it is to be connected with. Likewise, the number of cavities and
number of terminals and leads for the female connector housing 14
will be determined by the number of electrical components that are
to be connected therewith. It is contemplated that by using
multiple cavity connector housings 16 and 20 and variable numbers
of terminals, the same electrical connector housings can be used in
a wide range of air cushion restraint systems. That is, in some
cases, as in the illustrated case in the drawings, various ones of
the cavities would remain empty.
Various ones of the terminals 22 of the female connector assembly
14 would be connected to a power source, such as the battery of a
vehicle, through sensor switches in series therewith, while others
would be connected to ground, to various indicators, etc.
FIGS. 12 and 13 show an alternate and preferred embodiment of a
shorting spring clip 220 and insulator housing 222 which could be
used in place of the shorting clip 24 and insulator housing 16. The
insulator housing 222 is identical to the insulator housing 16
except that a different cavity 224 is provided to receive the
shorting clip 220. The cavity 224 is of a lesser height than the
cavity 64 of the insulator housing 16 and has a pair of spaced
posts 226 extending between its top and bottom sides 227 and 228
for retaining the clip 220 in place, and in a manner to be
hereinafter more fully described. The parts of the insulator
housing 222 which are identical to that of the insulator housing 16
will be given the same reference numerals.
The spring clip 220 is made from sheet metal and comprises a main
body or bridge portion 230 and a plurality of elongated spaced
apart resilient fingers 232 extending parallel to each other and
transversely of the bridge portion 230. The fingers adjacent their
forward end portions are bent upwardly to define ramp surfaces 236
and each have a transversely extending ear 238 which is adapted to
be received through the slots 94 in the housing 16 and engage the
upper side of the male blade terminals 18, as shown in FIG. 13. The
fingers 232 and bridge portion 230 define an obtuse included angle
therebetween when in their free state position. The bridge portion
230 at its rearward end has a pair of spaced apart slots 240 and
barbed tangs 242 which define one side of the slots 240. The bridge
portion 230 is also rounded at its rearward end, as indicated by
reference numeral 244, and has a pair of spaced upwardly extending
flanges 246 adjacent its forward end.
The spring clip 220 is connected to the housing 222 by inserting
the same rearward end first into the cavity 224 from right to left,
as viewed in FIG. 13. To this end, a suitable tool engaging the
flanges 246 can be used for inserting the clip 220 into the cavity
224. As the clip 220 is being inserted into the cavity the bridge
portion 230 and fingers 232 will be deflected to increase the
obtuse included angle therebetween, since the ears 238 are in
engagement with the terminals 18, until the flanges 246 clear the
inwardly extending projection 100 on the housing 222 whereupon the
self-biasing forces of the clip 220 cause the obtuse included angle
between the bridge portion 230 and fingers 232 to decrease and lock
the flanges 246 behind the projection 100. In other words, the
rearward portion of the fingers 232 and the forward end of the
bridge portion 230 spring upwardly when the flanges 246 clear the
projection 100 until the rearward portion of the fingers 232 engage
the projection 100. Also, the obtuse included angle between the
fingers 232 and the bridge portion 230 when the clip 220 is
connected to the housing 222 is greater than the obtuse included
angle therebetween when in the free state position whereby the ears
238 are biased into engagement with the terminals 18.
The clip 220 is retained within the connector housing 222 by the
barbed tangs which bite into the posts 226 on the housing 222 as
the posts are received within the slots 240 when the clip 220 is
connected to the housing 222. The shorting clip 220 is adapted to
be disengaged from its associated terminals 18 in the same manner
as previously described in connection with the shorting clip
24.
From the foregoing, it should be apparent that a novel electrical
connector means having a spring shorting clip which is
automatically operative to bridge the terminals of a connector
assembly when the connector assemblies are disconnected and which
is automatically cammed out of position when the connector
assemblies are connected together has been provided. The structure
of providing a spring clip in one of the connector assemblies and
the simple cam means in the other connector assembly makes the
electrical connector means of a relative simple and economical
construction.
Although the illustrated embodiment hereof has been described in
great detail, it should be apparent that certain modifications,
changes and adaptations may be made in the illustrated embodiment,
and that it is intended to cover all such modifications, changes
and adaptations which come within the spirit of the present
invention.
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