U.S. patent number 3,697,928 [Application Number 05/015,167] was granted by the patent office on 1972-10-10 for electrical connector.
This patent grant is currently assigned to AMP Incorporated. Invention is credited to Kemper Martel Hammell.
United States Patent |
3,697,928 |
Hammell |
October 10, 1972 |
ELECTRICAL CONNECTOR
Abstract
The disclosure relates to an electrical connector which
comprises mateable housing parts having latching means to latch the
housing parts together when they are mated together in a polarized
manner. The latching means is provided with means to maintain the
latching means in a positively latched position to maintain housing
part latched and a loaded spring to disengage the members when
unlatched. Integral contact retention means are provided in the
housing parts to retain the electrical contacts within the housing
parts.
Inventors: |
Hammell; Kemper Martel
(Harrisburg, PA) |
Assignee: |
AMP Incorporated (Harrisburg,
PA)
|
Family
ID: |
21769880 |
Appl.
No.: |
05/015,167 |
Filed: |
February 27, 1970 |
Current U.S.
Class: |
439/157; 285/88;
403/DIG.4; 285/320 |
Current CPC
Class: |
H01R
13/627 (20130101); H01R 13/453 (20130101); H01R
13/4226 (20130101); Y10S 403/04 (20130101) |
Current International
Class: |
H01R
13/627 (20060101); H01R 13/44 (20060101); H01R
13/422 (20060101); H01R 13/453 (20060101); H01r
013/54 (); H01r 013/62 () |
Field of
Search: |
;339/45,75,91
;24/23AM,23AK,23AV,23A ;287/119,DIG.9,DIG.13
;285/81,82,87,88,305,320,89-91 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
|
|
|
|
|
|
|
99,574 |
|
Apr 1925 |
|
DD |
|
1,448,070 |
|
Jun 1966 |
|
FR |
|
Primary Examiner: Champion; Marvin A.
Assistant Examiner: Lears; Terrell P.
Claims
What is claimed is:
1. In an electrical connector having a pair of mating housing
members with mateable electrical terminals in said housing member,
the improvement comprising: a latching finger on one of said
housing members, a latching member on the other of said housing
members including a pivotally mounted and generally U-shaped
member, resilient spring means engaging said U-shaped member, said
latching finger being engageable with one end portion of said
U-shaped member, said U-shaped member being pivotally actuable upon
said engagement by said latching finger and pivotally actuable
against the resilient action of said resilient spring means,
thereby allowing said latching finger to be properly positioned for
latching engagement with said resilient spring means, said U-shaped
member being resiliently actuable by said resilient spring means
into latching engagement with said latch finger, the other end
portion of said U-shaped member having a manually pressible portion
actuable against the resilient action of said resilient spring
means to unlatch said U-shaped member from said latching finger,
and safety lock means engageable with said other end portion of
said U-shaped member and preventing actuation of said U-shaped
member in response to pressure against said pressible portion.
2. The structure as recited in claim 1, and further including,
detent means on said other end portion of said U-shaped member for
removably retaining said safety lock means.
3. The structure as recited in claim 1, and further including,
groove means in said latch member for slidably receiving said
safety lock means.
4. The structure as recited in claim 2, and further including:
groove means in said latch member for receiving said lock means,
with said detent means positioned adjacent to said groove means.
Description
This invention relates to light weight rugged plug and receptacle
having a quick connect snap latching and quick lease device.
General purpose pop out type connectors have been known in the art.
However, connectors of this type have been relatively expensive to
produce and have displayed problems in that the latching devices
for maintaining the housing parts together often became unlocked,
allowing the connector to become disassembled and thereby provide a
break in the electrical circuits.
In accordance with the present invention, there is provided an
electrical connector of the above type having a locking means for
locking together the housing parts and maintaining the parts in the
locked position without damaging the locking mechanism upon
assembly of the parts. Briefly, the above is provided by the use of
a multiple latching member which is rotated upon entry thereinto of
a notched member from the mating housing, the latching member
rotating back to its original position upon entry of the notch
completely thereinto.
It is therefore an object of this invention to provide a light
weight rugged plug and receptacle circular connector for blind
assembly with a quick connect snap latching and quick release
means.
It is a further object of this invention to provide a safety means
integral with a guarded latch system whereby the release latch can
be locked against release in either the assembled or disassembled
position without damaging the latching mechanism upon assembly of
the locked release latch.
It is a yet further object of this invention to provide molded
contact retention means in the receptacle and the plug portions of
the connector whereby both pin and receptacle contacts can be
inserted into and released from their respective means by a simple
commercially available tool inserted into the rear openings of the
receptacle and plug.
It is a still further object of this invention to provide an
elastic conical strain relief which is designed to be snap retained
on the rear of the plug and compression retained on the
interconnecting cable by means of a self-contained heat shrinkable
plastic band at the rear of the strain relief, means being provided
whereby the heat shrinkable band can be easily removed in case of
complete cable repair.
It is a yet further object of this invention to provide means for
easily environmentally shielding and RFI shielding the connector at
very low additional cost.
It is a still further object of this invention to provide an
electrical connector having the above features in a relatively
small size and configuration at relatively low cost relative to
prior art connectors of type.
The above objects and still further objects will immediately become
apparent to those skilled in the art after consideration of the
following preferred embodiment thereof which is provided by way of
example and not by way of limitation wherein:
FIG. 1 is a perspective view of an electrical connector in
accordance with the present invention;
FIG. 2 is an exploded view of the electrical connector in
accordance with the present invention;
FIG. 3 is a cross sectional view of the electrical connector of
FIGS. 1 and 2 after mating thereof;
FIG. 4 is a cross sectional view of the latch-device of FIG. 3
prior to mating of the housing members;
FIG. 5 is a view the same as FIG. 4 but with the housing members
partially mated;
FIG. 6 is a view same as FIGS. 4 and 5 with the housing members
fully mated;
FIG. 7 is a cross sectional view of the contact assembly of a
connector of the present invention prior to insertion;
FIG. 8 is a cross sectional view the same as FIG. 7 with the
contact member partially inserted;
FIG. 9 is a cross sectional view the same as FIGS. 7 and 8 with the
contact member fully inserted; and
FIG. 10 is a view taken along the lines 10--10 of FIG. 9.
Referring first to FIG. 1, there is shown an electrical connector
in accordance with the present invention having male connector
portion 1 and female portion 3. The male connector portion includes
guiding and polarizing keys 5, there being one such polarizing key
positioned on the male portion 1. The male portion 1 also may
include an 0-ring 7 which provides an environmental seal when
mating with the female portion 3. The portion 1 also includes an
elastic strain relief member 9 which provides protection for the
cables terminating in the connector and may provide RFI shielding
and which is easily removable for repair of the cables therein. A
heat shrinkable cable retention band 11 is positioned at the
portion of the elastic strain relief member 9 remote from the
connector portion 1, the band 11 locking the collapsible strain
relief member thereunder and over the incoming cable 13 thereto.
The male portion 1 also includes a guarded release latch 15 and a
safety lock 17 which forms a portion of the latch 15, the latch
being mateable with a portion 16 of the female connector member 3
to provide a locking or latching between the two connector members
1 and 3.
The connector receptacle portion 3 includes a spring loaded pin
guard disc 19 having apertures 20 therein behind which are
connector elements which may comprise pins or special sockets for
receiving the pins or sockets from the connector portion 1. The
connector receptacle portion 3 also includes a flanged pin housing
21 having apertures 23 therein for securing the member 3 to a panel
board or the like. The latch finger 16 is positioned on the top
surface between guard rails of the connector portion 3 for mating
with the latch 15 to provide the locking action as will be
explained in detail hereinbelow. The member 3 also includes a stop
member 27 for preventing the spring loaded pin guard disc 19 from
being biased outwardly by the springs therebeyond, the spaces 25
providing desired polarization in cooperation with plug guide and
polarizing keys 5.
Referring now to FIG. 2, there is shown an exploded view of the
connector in accordance with the present invention. Male portion 1
of the connector includes the terminal housing 31 having the
release latch 15 and the safety lock 17 thereon and the polarizing
and guiding portions 5. The cable receiving end of the connector
portion 1 includes female or special male contact retention
subassemblies 33 for receiving the individual wires 13 there being
a terminal on each of said wires which mates with the sub-assembly
33. A sealing grommet 37 is positioned over the sub-assembly 33 in
locking relation with the terminal housing 31 and within the
aperture 39 thereof. The strain relief boot 9 is positioned over
the rearward end of the terminal housing 31 and extends over the
flange 41 which surrounds the recess 39, the heat shrinkable cable
retention band 11 fitting over the portion 43 of the strain relief
boot 9 and being shrunk thereon and over the cable 13 (FIG. 1) to
provide a seal between the wires 13 and the interior of the
terminal housing 31.
The receptacle portion 3 of the connector includes the flanged pin
housing 21 with apertures 23 thereon for mounting on a panel board
or the like. The portion 3 includes a receptacle housing 45 which
includes the stop members 27 with associated polarizing spaces 25.
Positioned rearwardly of the stop members 27 is the spring loaded
pin guard disc 19 having an ear 49 thereon for proper orientation
thereof within a keyway 47 (FIG. 3) in the mounting housing 45. The
disc 19 abuts the rearward surfaces of the stop members 27 and
includes a spring member 51 positioned therebehind to bias said
member 19 against the stop members 27. A contact terminal housing
53 fits within an 0-ring 55, the far end of the spring 51 resting
against the flange 54 of the terminal housing 53 and the 0-ring 55
being positioned over the terminal housing 53 as will be explained
in greater detail hereinbelow. The rear portion of the receptacle
housing 45 includes a sealing grommet 57 which is secured within
the terminal housing 53 and includes apertures 59 therein which
aline with the apertures 61 of the terminal housing 20 and of the
disc member 19 to allow the insertion therein of male or special
contact pin elements.
Referring now to FIG. 3, there is shown a connector in accordance
with the present invention in mated relation. The connector portion
3 is shown mounted in a panel 65, the spring 51 being in retracted
condition. The latch finger 16 is secured within the latching
member 15 and against a finger portion 64 of the latch 15, the
finger portion 64 being retained in locking relation with latch 16
by means of the locking pin 67 of the latch 15 which rides along an
L-shaped guide track 68 in the latch housing 69. The latch housing
69 is secured to the body portion 31 by means of screw member 70
(FIGS. 3 to 6) to which access can be gained by means of holes 71
(FIG. 2) in the latch member 15. U-shaped member 72, of which the
finger 64 is a part, is pivoted in a housing 69 on a pivot 73, the
pivot 73 being secured in the housing 69, as shown in FIGS. 2 and 4
through 6. The member 72 is normally biased in a counterclockwise
direction as viewed in FIG. 4, by the spring wire 74 which is
secured in the housing 69. When the housing members 1 and 3 are
mated, latch finger 16 will enter into latch member 15 as shown in
FIG. 5, the latch member 16 causing the U-shaped member 72 to
rotate in a clockwise direction against the bias of spring member
74, due to the interfacing of latch 16 with the finger 64 as shown
in FIG. 5. Upon complete entry of the latch 16 into the latch 15,
U-shaped member 72 will again rotate in a counterclockwise
direction due to the bias from the spring 74 as shown in FIG. 6,
thereby engaging the latch portions 16 and 64 to provide the
locking action between the housing members 1 and 3.
The housing members 1 and 3 can be locked by moving the safety lock
67 along the L-shaped groove, as shown in FIG. 6 and beyond the
detent dimple 75 in the member 72 to prevent clockwise motion of
U-shaped member 72. The latch 16 is formed from resilient material
so that, even if the safety lock 67 is in the locked position as
shown in FIG. 6, interfacing between the latch 16 and finger 64
will still cause the latch 16 to move upwardly and allow locking of
the two housings in the manner above described.
If it is desired to release the connector portions 1 and 3, the
safety latch 67 is placed in the position shown in FIGS. 4 and 5,
thereby allowing the arms 72 to be rotated in a clockwise direction
by thumb or finger pressure which is applied thereto. This thumb or
finger pressure which is applied thereto will rotate the arm 72 in
the manner shown in FIG. 5 and allow removal of the latch member 16
therefrom. The clockwise movement of the U-shaped arm 72 will allow
the latch member 16 to automatically pop out of the latch member 15
due to the bias applied by spring 51 against the spring loaded pin
guard disc 19, as will be explained in more detail hereinbelow.
With reference now to FIGS. 2 and 3, in particular, it will be
noted that when the connector member 1 is mated with the connector
member 3, the polarizing and guiding keys 5 pass through spaces 25
and against the pin guard 19, thereby forcing the pin guard
rearwardly in the receptacle housing 45 and compressing the spring
51, the spring 51 being shown in the compressed state in FIG. 3.
Upon release of the latch as explained in detail hereinbelow, force
applied by spring 51 against the pin guard disc 19 forces the
connector member 1 out of the connector member 3, thereby
completely breaking the electrical connections made and separating
the two connector portions 1 and 3.
Terminal housing 53 and assembly 33 contain both male and female
connector retention elements therein as shown in FIG. 3 and in
greater detail in FIGS. 7 to 10. Since both the elements 33 and 53
will contain the same type of terminal retention means, a
description will be made reference to only one of them, it being
understood that the description applies to the other as well. The
housing 53, as shown in FIG. 3, includes a bonded plate 80 on its
leftward end having apertures 81 therein of slightly smaller
dimension than the apertures 61 of the terminal housing 53. In this
manner, with reference to FIGS. 7 to 10 in particular, a pin member
82 having a peripheral flange 83 thereon, will be forced through
sealing grommet 57 (FIG. 3) and into the aperture 61 of the
terminal housing 53. The pin 82 will continue to be advanced
forward until the smaller diameter front end thereof passes through
aperture 81 of the plate 80, the flange 83 coming to rest against
the plate 80. The rear portion of the pin 82 includes an enlarged
portion 84 which passes a plurality of latching fingers 85 and
rests therewithin when the flange 83 abuts or substantially abuts
plate 80, as shown in FIG. 9. At this point, the pin 82 is locked
into the connector.
Though the invention has been described with respect to a specific
preferred embodiment thereof, many variations and modifications
thereof will immediately become apparent to those skilled in the
art. It is therefore the intention that the appended claims be
interpreted as broadly as possible in view of the prior art to
include all such variations and modifications.
* * * * *