U.S. patent number 3,926,497 [Application Number 05/451,081] was granted by the patent office on 1975-12-16 for connector shroud and assembly.
This patent grant is currently assigned to E. I. Du Pont de Nemours & Company. Invention is credited to George Thomas Eigenbrode.
United States Patent |
3,926,497 |
Eigenbrode |
December 16, 1975 |
Connector shroud and assembly
Abstract
A shroud is provided for an electrical connector assembly
comprising a housing having a generally rectangular cavity, a pair
of opposing sides of the cavity having recesses therein, and
elongated members extending from the sides longitudinally in each
recess, each elongated member having a latch surface on the free
end thereof directed inwardly in the recess; and the members being
flexible axially within each recess to receive a pair of flange
members on opposite sides of a connector block inserted in the
shroud and to engage the latch surface on each member with a mating
latch surface on each flange member to releasibly secure the
connector block in the shroud.
Inventors: |
Eigenbrode; George Thomas
(Mechanicsburg, PA) |
Assignee: |
E. I. Du Pont de Nemours &
Company (Wilmington, DE)
|
Family
ID: |
23790733 |
Appl.
No.: |
05/451,081 |
Filed: |
March 12, 1974 |
Current U.S.
Class: |
439/353 |
Current CPC
Class: |
H01R
13/6273 (20130101) |
Current International
Class: |
H01R
13/627 (20060101); H01R 013/54 () |
Field of
Search: |
;339/45M,49R,61M,75M,75MP,91R,176M,176MP,184M |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Lake; Roy
Assistant Examiner: Abrams; Neil
Claims
I claim:
1. A shroud for an electrical connector assembly comprising a
unitary housing having a generally rectangular cavity, a pair of
opposing side walls of said cavity having recessed openings
therein, and an elongated member extending from each side wall
longitudinally in each recessed opening, each elongated member
having a latch surface on the free end thereof, each latch surface
extending from the member toward a side of the recessed opening,
and each member being flexible in axial alignment with each
recessed opening and toward a side of said recessed opening to
receive a flange member on each side of a connector block inserted
in the shroud and to engage the latch surface on each elongated
member with a mating latch surface on a trailing end of each flange
member and releasably secure the connector block in the shroud.
2. A shroud, as recited in claim 1, said latch surface on each
elongated member being inwardly directed in axial alignment with
said recessed opening.
3. A shroud, as recited in claim 1, including a longitudinal edge
of each recessed opening in said opposing sides being spaced from
each member to provide a stop for the axial flexing of each
elongated member.
4. A shroud, as recited in claim 2, each elongated member
additionally including a cam surface disposed on the free end
thereof, opposite said latch surface, outwardly directly from each
recessed opening for engaging each flange member on the opposite
side of the connector block and flexing each elongated member in
axial alignment with said recessed opening.
5. A shroud, as recited in claim 1, each elongated member and side
wall of said housing being of substantially uniform thickness
material.
6. A shroud, as recited in claim 1, wherein said shroud is
integrally formed with a header block having a plurality of
electrical connectors disposed therein.
7. A shroud, as recited in claim 6, wherein said electrical
connectors are male terminals.
8. A shroud for an electrical connector assembly comprising a
unitary housing having a generally rectangular cavity, a pair of
opposing side walls of said cavity having recessed openings
therein, and an elongated member extending from each side wall
longitudinally in each recessed opening, each elongated member
having a latch surface on the free end thereof, and each member
being flexible in axial alignment with each recessed opening to
receive a flange member on each side of a first connector lock
inserted in the shroud and to engage the latch surface on each
elongated member with a mating latch surface on a trailing end of
each flange member and releasable secure the first connector block
in the shroud, a slotted opening in each opposing side wall of said
housing at the end opposite said recessed opening for receiving a
flange member on each side of a second like connector block, and a
pair of latch arms mounted on opposite sides of said housing, each
latch arm having a latch surface on the free end thereof for
releasable securing said second connector block in said connector
assembly.
9. A shroud, as recited in claim 8, said latch surface on each
elongated member being inwardly directed in axial alignment with
said recessed opening.
10. A shroud, as recited in claim 8, wherein a longitudinal edge of
each recessed opening in said opposing sides is spaced from each
member to provide a stop for the axial flexing of each elongated
member.
11. A shroud, as recited in claim 8, wherein each latch arm
additionally comprises a pivotal release lever for disengaging each
latch surface and removing said second connector block.
12. A polarized electrical connector assembly comprising a shroud
and a pair of like elctrical connector blocks having a plurality of
mating electrical connectors mounted therein, each connector block
comprising a generally rectangular body having a plurality of
terminal receiving cavities therein for electrical connectors, and
a pair of flange members disposed on opposite sides of the body,
each flange member having a surface coplanar with a surface of the
body and a latch surface; said shroud comprising a unitary housing
having a generally rectangular cavity, a pair of opposing side
walls of said cavity having recessed openings therein, an elongated
member extending from each side wall longitudinally in each
recessed opening, each elongated member having a latch surface on
the free end thereof, inwardly directed in axial alignment with
said recessed opening, said member being flexible in axial
alignment with each recessed opening to receive each flange member
on opposite sides of the first connector block inserted in the
shroud and to engage the latch surface on each elongated member
with a mating latch surface on each flange member and releasably
secure the first connector block in the shroud, a slotted opening
in each opposing side wall of said housing at each end opposite
said recessed opening for receiving each flange member on opposite
sides of a second like connector block inserted in the shroud, and
a air of latch arms disposed on opposite sides of said housing,
each latch arm having a latch surface on the free end thereof for
releasably securing the second connector block in said connector
assembly.
13. A connector assembly, a recited in claim 1, wherein said
electrical connectors in said first connector block are male
terminals and said mating electrical connectors in said second
connector block are female terminals.
14. A polarized electrical connector assembly comprising a header
block having a plurality of electrical connectors disposed therein,
a shroud integrally formed with said header block, an electrical
connector block having a plurality of mating electrical connectors
mounted therein, said connector block comprising a generally
rectangular body having a plurality of terminal-receiving cavities
therein for electrical connectors, a pair of flange members
disposed on opposite sides of the body, each flange member having a
surface coplanar with a surface of the body and a latch surface;
said shroud comprising a unitary housing having a generally
rectangular cavity, a pair of opposing side walls of said cavity
having recessed openings therein, and an elongated member extending
from each side wall longitudinally in each recessed opening, each
elongated member having a latch surface on the free end thereof,
each latch surface extending from the member toward a side of said
recess opening, each member being flexible in axial alignment with
said recessed opening and toward a side of the recessed opening to
receive each flange member on opposite sides of said connector
block inserted in the shroud and to engage the latch surface on
each elongated member with the latch surface on each flange member
and releasably secure the connector block in the connector
assembly.
15. A connector assembly, as recited in claim 1, wherein the
electrical connectors in said header block are male terminals and
the mating electrical connectors in said connector block are female
terminals.
Description
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to electrical connector assemblies,
and particularly relates to housing assemblies for releasibly
latching a connector block and a plurality of electrical connectors
therein with a plurality of mating electrical connectors.
2. Description of the Prior Art
Electrical connector blocks, housing and assemblies are well-known
in the prior art. An electrical connector block suitable for use
with the shroud of the present invention, with minor modifications,
is described in U.S. Pat. No. 3,781,760. An electrical connector
housing having a hood or shroud integrally formed with a connector
block for receiving another connector block having a plurality of
mating electrical connectors therein is described in U.S. Pat. No.
3,366,729. A three piece separable electrical connector housing
assembly, wherein the intermediate housing has a plurality of
cavities therein in alignment with a plurality of mating connectors
in a pair of connector blocks, is described in U.S. Pat. No.
3,434,098. A housing member for electrical connectors comprising
identical parts is described in U.S. Pat. No. 3,497,942.
The shroud and connector block assembly of the present invention is
readily distinguished from the prior art assemblies by the
elongated members longitudinally disposed in recesses provided in
opposing sides of the shroud cavity and the latching surface on the
free end of each elongated member.
SUMMARY OF THE INVENTION
According to the present invention a shroud is provided for an
electrical connector assembly comprising a housing having a
generally rectangular cavity, a pair of opposing sides of the
cavity having recesses therein, and elongated members extending
from the sides longitudinally in each recess, each elongated member
having a latch surface on the free end thereof, and the members
being axially flexible within each recess to receive a pair of
flange members on opposite sides of a connector block inserted in
the shroud and to engage the latch surface on the free end of each
elongated member with a mating latch surface on each flange member
and releasibly secure the connector block in the shroud.
In the preferred embodiment of the shroud of the present invention
an edge of each recess in the opposing sides of the cavity is
inclined with respect to the elongated member and spaced therefrom
to provide a stop for the axial flexing of the elongated member
during insertion of a connector block in the shroud. The stop edge
of the recess prevents over-flexing the elongated member and
damaging it.
Preferrably, a cam surface is provided on the free end of each
member opposite the latching surface and directed outwardly from
the recess to engage each flange member on opposing sides of the
connector block and facilitate flexing the member axially within
the recess when the connector block is inserted in the shroud.
A preferred connector block for use with the shroud of the present
invention comprises a generally rectangular body having a plurality
of terminal receiving cavities therein for electrical connectors,
and a pair of flange members disposed on opposite sides of the
body, each flange member having a surface coplanar with a common
surface of the body and a latch surface at one end of the flange
member. Prefer- ably, each flange member has a cam surface on a
leading edge of the member for engaging the free end of each
elongated member of the shroud and flexing each elongated member
axially within the recess to receive the connector block, and a
latch surface on a trailing end of the flange member for engagement
by the latch surface on each elongated member.
According to the present invention there is also provided a
polarized electrical connector assembly comprising a shroud and a
pair of like connector blocks, having a plurality of mating
electrical connectors mounted therein. In a preferred connector
assembly of the invention, the opposing sides of the cavity
additionally have slots for receiving a pair of flanges on opposing
side of a like connector block, and a pair of latch arms mounted
exteriorly on opposite sides of the housing and inclined with
respect to the housing, each latch arm having a latch surface on
the free end thereof for releasibly securing the like connector
block in the connector assembly. Preferably, each latch arm in
integrally formed with a pivotal release lever and a fulcrum
integrally connected to the opposite sides of the housing.
Additionally, there is provided a polarized electrical connector
assembly comprising a shroud integrally formed with a header block
having a plurality of electrical connectors mounted therein and a
connector block having a plurality of mating electric
connectors.
The shroud and connector assembly of the present invention provide
for accurate alignment of a plurality of electrical connectors with
a plurality of mating electrical connectors, polarization of the
mating electrical connectors and releasible latching of the
connector blocks in the assembly. Additionally, in the preferred
embodiment of the shroud and connector assembly, the shroud
provides for protection of male electrical connectors in a
connector block. Further, the shroud provides a polarized
interconnection of mating electrical connectors using like
connector blocks.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a perspective drawing of a preferred embodiment of a
shroud and connector assembly of the present invention.
FIG. 2 is an elevation drawing in section taken along line 2--2 of
the shroud and connector assembly of FIG. 1.
FIG. 3 is a plan view of the shroud and connector assembly of FIG.
1.
FIG. 4 is an elevation drawing illustrating a header-block
including a shroud and connector assembly in accordance with the
present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
A preferred embodiment of the shroud and connector assembly of the
present invention is described with reference to the attached
drawings wherein the same numerals are used throughout to identify
the same elements.
With the particular reference to FIGS. 1, 2 and 3, a connector
assembly comprising a shroud 10 and connector blocks 12 and 13
housing, respectively, a plurality of mating female and male
electrical connectors, is illustrated.
In a preferred embodiment a hollow rectangular cavity 11 is formed
of molded plastic, having a top 16, bottom 18 and sides 20. The
sides 20 have integrally formed therein recesses 22 and elongated
members 24, which are flexible axially within each recess 22 for
receiving flanges 14 on opposite sides of connector block 13. A
latch surface 28 is provided on the free end of each elongated
member 24. Each latch surface 28 is inwardly directed in each
recess 22 for receiving the flanges 14 on the connector block 13
and engaging mating latch surfaces 17 on the trailing ends of
flanges 14 on block 13. Cam surfaces 30 are integrally formed on
the free ends of the flexible members, opposite each latch surface
28, and flex the members axially within each recess 22 upward when
engaged by cam surfaces 15 on the leading ends of each flange 14 on
inserting of connector block 13 in the shroud. Edge surface 27 of
each recess 22 is preferably spaced from and inclined with respect
to each elongated member 24 to stop the axial flexing of each
member 24 in each recess 22 during insertion of the connector block
13 to prevent overflexing and possible damage to members 24.
When the connector block 13 is fully inserted in shroud 10, the
elongated members 24 engage latch surface 28 with the mating latch
surfaces 17 on the trailing ends of flange members 14 to lock the
block 13 in shroud 10. The flexible elongated members 24 may be
readily disengaged by manually flexing them upward to disengage
latch surfaces 28 and 17 and the connector block 13 may be
withdrawn from the shroud 10.
Slots 32 are provided in the sides 20 of the cavity 11 on the ends
opposite recesses 22 for receiving flanges 14 on connector block
12. Quick release latch arms 34 are integrally formed with release
levers 40 and integrally connected to exterior sides of the shroud
10 by fulcrum 44. Arms 34 are inclined with respect to sides 20 and
have latch surfaces 36 on the free ends thereof and cam surfaces 38
opposite the latch surfaces 36. On insertion of the connector block
12, preferably housing a plurality of female connectors, the cam
surfaces 38 engage each flange 14 on the block 12 and flex the
latch arms 34 outward about fulcrum 44. Slots 32 receive flanges 14
on the sides of block 12 and provide for polarized mating of the
male electrical connectors in block 13 and female connectors in
block 12. When connector block 12 is fully inserted the latch arms
flex to engage each latch surface 17 of each flange 14 on the
connector block 12 and lock the connector block 12 in shroud 10.
The latch surfaces 36 secure the block in the shroud 10, and
mechanically secure the mating electrical connectors in blocks 12
and 13. Block 12 may be readily disengaged the withdrawn from the
shroud assembly by manually pinching the release levers 40 to flex
the quick release latch arms 34 about fulcrum 44 and disengage each
latch surface 36 from each latch surface 17 on flanges 14 of
connector block 12. Stops 42 provides on levers 40 prevent over
flexing of arms 34 and damage to fulcrum 44.
Suitable like connector blocks 12 and 13, are similar to connector
blocks described in U.S. Pat. No. 3,781,760 and comprise an
insulation housing 52 formed of suitable dielectric material such
as a moldable plastic. A number of terminal receiving cavities 54
are formed in the body and extend between the sides 56 and 58.
Cavity terminal entrances 60 are formed in the sides 56 and contact
entrances 62 are formed in sides 58. Each cavity 54 has a bottom
wall 64, a top wall 66, and a pair of spaced sides walls 68.
Flanged members 14 are integrally formed with or otherwise suitably
attached to sides 53 of the housing 52, and are coplanar with a
surface of the blocks.
An alternate embodiment of the shroud and connector assembly of the
present invention is illustrated in FIG. 4 of the drawings. In this
embodiment the shroud 70 is integrally formed with a right angle
header block 72 having a plurality of electrical connectors mounted
therein. The shroud 70 comprises a top 76 and sides 78 having
recesses 80 with elongated members 82 extending from each side 78
longitudinally in each recess. Each elongated member 82 flexes
axially within each recess 80 and a base member 86 for receiving
flanged members 94 of the connector block 92. A latch surface 88 is
integrally formed on the free end of each elongated member 82, and
is inwardly directed in each recess 80. A cam surface 90 is
provided opposite latch surface 88 for engaging cam surface 95 on
flange 94 of the connector block 92 and axially flexing members 82
within each recess 80 when the block is inserted in the shroud 70.
Each elongated member 82 engages latch surfaces 88 with the mating
latch surfaces 97 on the trailing ends of flanges 94 when block 92
is fully inserted to secure the block in the shroud 70, and
mechanically secure the electrical connectors in blocks 92 with the
mating connectors in the header block 72. Although this embodiment
is illustrated with reference to a right angle header block 72, it
is readily apparent shroud 70 is equally useful with a straight
through header block. Such header blocks may be readily mounted on
a circuit board, as illustrated, or otherwise conventionally
mounted to interconnect electrical circuit subassemblies.
While the above description and attached drawings illustrate the
preferred embodiments of the shroud and connector assembly of the
present invention, it is apparent that other embodiments and
modifications are equivalent and will be obvious to one skilled in
the art, and the invention is not to be limited except by the
appended claims.
* * * * *