Note: Descriptions are shown in the official language in which they were submitted.
1 I
Kiwi No. I~9172A
( BUD 06 I)
ION It FORCE CIRCA
WRAP KEYNOTE ASSUME
BA~ÇROT~F TOE INVENTION
The invention herein relates to a circuit
10 board connector system. It it particularly suite for
use in computer systems wherein a series of daughter
boards are connected to a other boar. The connector
system of this insrention enable the daughter Byrd to
be inserted into the connector system readily by the
15 computer user.
It it krlown to make connections between
daughter and mother board by using pin kinkier
which are soldered to the re~pect~Y board.
Al~ernat~vely~ the pow; may be elect Rockwell
2 I
interconnected by a writeup connection. It it alto
- known in a general ennui to make high den fly
connections between the daughter and mother board.
There are alto a number of schemes why ah are
5 known to provide zero or low insertion forte
connectiorls. Typical low insertion forte c~nnector6
are illustrated in U.S. Patent N~ber~ 3r553~630 to
Shingled et at; 4,179,177 to Lapraik; yo-yo to
Yore; 3~899,234 to Meager et at; 3,130,351 to (isle;
3,022,481 to Stop; and 3,683,317 to Walk up.
Similar device are also disclosed in US Patent
Applicatiolls aye o Outtake and AYE to
I,eathe r O
In the various; prior art patents and patent
15 application noted above, the connector ambles
include opposing rows of spring-itype connects the low
or zero insertion force mechanisms vary to Rome degree
but generally include Rome mechanism err deflecting the
spring contact to space them apart to allow easy
20 in~ertiorl of Al printed wiring board to the connector.
Jo Thereafter, the contacts ore put into engagement witch
corresponding pads on the printed wiring board to make
the desired electrical connections. In ode kiwi, the
spring contacts are normally biased towered engagement
3 I
with the printed circuit board and the low insertion
- force mechanism prude them apart two allow entry of
the printed wiring board to tube connector. In other
approaches, the contact mummer are normally fipaced
5 apart and are deflected by the low insertion force
mechanism into engagement with the printed wiring
board. It it alto known to employ cam and falser
arrangements a the low insertion force connector
mechanism. The cam member it actable to move the
10 follower member to deflect or close the spring contacts
as desired.
The invention described herein provide a
connector stem Pro mounting on a mother circuit board
which receive a daughter board in a manner that it i
15 easily inserted or released f rum the mother board. The
daughter board can be readily at signed within an
electrical connector receptacle. The 6ys~em enables
the insertion of a daughter board in the connector
receptacle in a single orientation. The stem ha an
MU improved low insertion force electrical connector
- system having a high density of individual connect on
and permit easy serviceability by a user.
I
r
In accordance we to ibis inventor 21 low
insertion force electrical connector system it provided
5 comprise no an electrical connector receptacle having a
plurality of electrical contact arranged in at least
wow opposing row. the low insertion iris ~y~'cem
selectively pus apart the electrical contact in one
row f wrier the electrical corltact. in an opposing row to
10 allow the insertion of an electrical plug member with a
low insertion force or for providing engagement of said
contact in the one and opposing rows with the plug
mourner Jo thy the receptacle contact make electrical
connection with desired contact of the plug member,,
15 The plug member sway comprise a portion of an elec~ronlc
module or a circuit board such a a printed wiring
board.
The connector stem further include devils
for aligning and locking the electrical plug member
20 after irl~ertion between the respective one and opposing
row of corltact~ of the receptacle, In accordance with
this ~nvent~ol~y an actuating arrangement it prodded
for actuating the Lowe lnQertlon force stem and the
align sly and locking Davis on a multi-phase
- operation. Prior to insertion of the plug member unto
- the receptacle, the actuating arrangement selectively
space apart the row of electrical contact dieter
insertion of the plug member between the respective
5 row of contact.
The actuating arrangement actuate eerily
first the aligning and locking device to align and
lock the plug member within the receptacle. Then, the
low inertia force system provide for the engagement
10 of the receptacle contacts with the desired contacts of
the plug member. The actuating arrangement I alto
adapted to ~erlally activate the low insertion force
system and the aligning and locking device in a wrier
fashion Jo first space apart the receptacle contact
and then unlock the plus member to allow the plug
member Jo be removed from the receptacle with a low
force
The recepJcacle, in accordance with this
inverltio~ adapted for mounting on a circuit board
20 itch a a mother hoard. The low inertly force system
may be of any conventional design" however, preferably,
the electrical contact corpora sprung mumbo and a
cam and follower arrangement to deflect or undeflect
the spring member Jo provide the respective spacing
apart and engagemenrc uncanny. In one embodiment the
- respective rows of contact comprise alternating high
zlnd low contact portions wherein respective high
contact in one row oppose respective lo contact on
5 the other row and vise Vera.
The receptacle in accordance with Casey
invention, it preferably constructed to allow the plug
member or printed wiring board to be inserted f rum the
wide or f rum the top, In accordance with another
lo aspect of the invention, a printed wit ring board,
circuit board or electronic module it provided with a
plug portion for inser~lon in an electrlc~l connector
receptacle. The plug portion include two parallel
rows of contact pads arranged whereon wit h the pad in
15 ore row being staggered relative to the pad; in the
other row. This permit an inquiry n~nber of
connection which can be made to the circuit board for
given size err Preferably the plug portion of
the circuit board further includes al~giling and looking
20 holes for accurately aligning the circuit board lrl an
electrical receptacle connector septum In a mow
preferred embodiment, a locating notch I provided
irk one side of the plug portion whereby the at fault
board can be inverted on the electrical resupply in
only one orientate on
r
r
Figure a perspective view of wide
entry card housing employing a plurality of conrlector
5 stem in accordance with this invention. -- -
Figure 2 it a perspective view of astraight-in or top entry card housing employing a
plurality of connector ~ystelos in accordance with this
invention.
Figure 3 and pa are exploded perspective
view of connector system in accordance with this
invention including a pi uraliLty owe contest segment
Figure 4 a perspective view of a connector
stem in accordarAce with this invention' mounted to a
15 back plane or mother board with a low insertion iris
mechanic in it pen petunia or insertion of
module board or daughter board.
inure 5 it a perspective view of the
connector ye in Figure 3 which ha been
I partially cut aye to show the locking and alignment
- eater thereof with respect to dupe board- narrated
lthere~n.
inure 6 end view and cros~-~ecltion of
two adjacent corlnector ~yRtem~ in accordance with thy
inventili~n with the low inert on force Mohawk m in
- respectively opened and closed poJ;ition~O
Figure 7 it an easploded perspective riew of a
connector septum in accordance with this invention
illustrating the locking and aligning mechanism.
Figure 8 it a top view off one end ox a
connector system in accordance with this invention.
figure 9 it a wide view of the erld of the
connector system shown on Figure 8.
Figure 10 it an end view of the end portion
of the connector system shown in Figure 8c
Figure 11 it a f font view ox the locking and
aligning lever arranged in the end of the conned or
~ys'cem shown in Figures 8-10.
Figure 12 it an exploded perspective of the
opposing end of the connector system in accordance wow
this involution.
Figure 13 it an end view c3f the opposing end
ox the connector fiystem shown in Figure 12.
Figure 14 a top view partially cut awry to
reveal the locking and alignirlg lever irk the- opposing
end of the connector stem of Figure 12,.
Figure 15 it idea view of the opposing end
of the connector stem ox Lowry 12,~
Figure 16 it a bottom view of the-oppo~ing
end of the connector system a in Figure 12
.I?ETAILEl2 DOHERTY OF TOE PROOF
Referring now to Figure 1-4, the invention
will be described in treater detail. The at rcuit board
connector stem 10 of this; invention it adapted to
provide a high density of individual connectiorl~ which
10 permit increased speed of signal in the stem Burr
serviceability it a particularly important concern in
the personal computer field id audaciously to the
mainterlance aspect The circuit board connector system
10 of this invention allows the computer owner to add
15 additional feature by buying additional mother or
daughter boards 11 which can be readily inverted in the
circus board connector septum 10 of this invention.
The connector stem can be mounted on a mother circuit
board or backpl no thereby adding increased feature to
20 Lowe computer.
The circuit board connector stem 10 of
this invention con be arranged on the mother crook t
board 12 in one pun In Figure I carol housing 13
and other circuit hoard Jo are arranged to receive a
daughter circuit board 11 by folding the daughter board
in from the ire of the mother board in a direction
parallel to the plane of the mother board. The circuit
board connector system 10 of this; invention acts a the
5 bottom guide for the mother board 11. The card housing
13 also include top shopped eye or guide 14 which,
with the circuit board connector system 10, eve to
provide ali~nmerlt for the daughter board 11 a it: it
slid from the wide into the card housing 13.
It is a feature of the at rcuit board
connector system 10 of this invention that the daughter
board can be inserted f rum Lowe wide as in Figure 1 or
from the top a in Figure 2. In the embodiment of
Figure 2, a cafe housing 15 include a plurality of
lo I Wright board connector systems 10 arranged on parallel
and mounted to the mother erect board 12. The card
housing lo include. shopped wide guide 16 Rand on
correspondence with the at rout board connector system
10 along each of the ~idefi 17 and 18 of the card
20 housing lo., In this embodirnen~, the daughter board 11
- 5 it inserted into the circuit board connector Ted 10
by sliding it down the Lydia guides 16 and through the
top of the circulate board connector sty loo
The circuit board connector ~y~tem~10 of thy
12
invention requires. no soldering to the mother circuit
- board 12,, The connects stem 10 include no pins
which can be easily damaged or bent in making
connection to the mother at rcuit board 12.
5 Preferably, the connector system lo it of the low or
zero insertion force type Jo that the daughter boards
11 are easily removed or inserted as desired.
In accordance with an embodimerlt of the
invention which it best illustrated by reference to
10 Figure 3, the connector system 10 it comprised of a
body shell 19 which it adapted to support, in a
floating fashion, a plurality of contact ~egmer3t 20~,
Each segment 20 can be customized a to it function in
the circuit board connector stem 10. For in Tess,
15 some of the segment 20 car be configured to carry
signal, while other can be con inured to be power
carrying. Thus, different segments 20 can serve
totally different func~iorl~. Since the segments 20 are
supported in a floating arrangement within the body
20 Hell 19 they can be independently self-aligned
relative to the mother circuit board 12. This can be
achieved because the various emanate I are able to
slide within the body Hell 19 I that they con be
precisely located or the contact pads 21 off toe mother
circuit board 12. This allow the at rcuit designer to
concentrate on err tolerances for the contact pad
21 relative to one another on the mother board 12 why to
allowing looser tolerance within the connector system
5 10 so
In accordance with another aspect of the
present inverltion, a system 22 for aligning and locking
the daughter board 11 within the connector stem 10 it
provided. The stem it briefly illu~ratedl by
10 rev erring to Figure 4 and 5 . Al inning and locking
lever 23 and 24 are pivotal supported in opposing
end of the body shell 19. The daughter board 11
include a corresponding pair of alignment hole 25 and
26 in Figure 4. The connector system 10 it shown in
US it; Opera pofiiti~n adapted for receipt and insertion of
the daughter board I
In Figure 5, toe connector Siam 10 is shown
with the twitter board 11 fully inserted and with the
aligning and losing yummy 22 in its cloyed position.
I In this position; projection 27 ox the re~peetive
t locking levers I and 24 are inverted within the hole
25 and 26 'co at ion and lock the daughter Barlow 11 in
desired relationship relative 'co the plane of the
mocker board 12. Projection I on locking lever 23
14
verve to align toe daughter board Lo a lateral tense
within the connector stem 10. Projection 29 on
locking lever 23 abstract one end of cord Lowe 4û when
connector 15 it in the cloyed petunia, arraying that
5 dozier board 11 cannot be inse;ged in either the
horizontal or the vertical direction until the
connector it opened A notch 28 in the laughter board
provide clearance err projection 29 when lever 23 it
in the closed position with the daughter board properly
10 in pi ace ..
In accordance with yet another peculate of 'eke
present invention, the connector system 10 employ a
zero cur low insertion force system 30 having spring
contact 31 and 32 and a cam 33 and follower 34
15 arrangement The cam and follower act upon the spring
contact 31 and 32 to provide, in an open position as
shown in the left hand stem 10, a low or Nero
inserltioll force for the daughter board into the system
Conversely, whorl in cloyed position, a. shown in the
_20 right-hand ~3ylsts~m 10 ox Figure 6 " an electrically
contain engagemerlt it made between the spring
contact and a:e~pective contact pads 35 on the daughter
board 1.
In ~ccordarlce with yet another pocket of the
present invention, the respective prying con~aCtB are
arranged in an alternating high and low phyla to
allow Jan increased Dunn y of electrical enact.
In accordance with ye anther aspect of the
5 present invention, an actuating ~yE;tem 36, as bet
illustrated in Figures 7-16, it provided which it
adapted to serially actuate the respective al~gnirl~ and
locking stem 22 and low insertion force stem 30.
The actuatlrlg stem 36 include an actuating lever 37
10 which include a pad 38 which it adapted to operate a
an actuating cam. It alto include a follower portion
39 on each of the locking lever 22 acid 23. upon
pivoting the actuating lever 37, the pad I and
follower portions 39 cooperate to provide the diehard
eerily actuation of the re~pectiYe aligning and locking
stem 22 and low inert on force stem 30~,
O-The at rcuit board connector stem 10, and
the various aspect of the invention embodied therein,
now Dick iced in greater detail to dew ire the
20 preferred embodiment thereof. Referring row to
Flogger 3, I 7 and 12, there it one on *le~tr~c~l
connector stem which comprises an ~lectr~c~l
connector rustically flyer talent to crook: board
12 finch I mother board or backpl~ne~ The receptacle
16 I
10 it lldaptedl I receive an e~eotr~cal plus member 11
- which can comprise part of on electronic nodule or a
circuit board such as a daughter board
Receptacle 10 it comprised of a body Hell 19
S and contact segment 20 a previously dockyard. the
body Hell 19 comprise an elongated t 40 defined by
spying wide walls 41 and 42 and end wall 43. Region
44 of the slot opposing toe end wall 43 it open. The
circuit board 11 can therefore be inserted into the
10 receptacle 10 f rum the top or f rum the wide in the
diYectiorl Winnie by the arrow 45 and 46.
As shown in Figure 7 and 12, the segment 20
are inverted into the body Hell 19 f rum the bottom.
The body Hell 19 includes internal dividing wall 47
15 which divide the Hell into a plurality ox chamber 48~
The nwnber of chamber 4B correspond Jo the number of
segment 20 to be supported by the body shell 19., A
err of depre~ion~ 49 in the wide wall 41 and 42
5 mark the respective locations of the internal we 47..
20 Generally centrally ox each c9f the wide walls 41 and I
of each respective chamber 48 there it costed
rectangular hole So,. This compare part of a ~y~tela
for supporting tube segment 20 within the b~dy--~hell 19
I an l~deperldent floating arrangement 'chat. each
1 7
egomaniac 20 earl be independelltly aligned to toe circuit
board 12.
The other element of the floating support
system 51 are a proj~ct~c)3rl 52 correspondingly centrally
located sun each segment 20 idea wall 53 and 54. The
projection 52 have a pyramid shape so that when the
segment 20 are inverted into the chamber 48" the
pro iectlon~ 52 spread apart the respective wide walls
41 and 42 until like projection; 52 snap into> the hole
50. The hole 50 are larger in width and height than
the corresponding width and height of the projection 52
thereby allowing the segment to have a limited degree
of freedom within the chamber 48 both vertically and
from Elide to wide and back to bask. A B up 55 in each
of the side wall; 41 and 42 provide a corre~pondln
internal Taipei Sirius So limiting vertical movement of
the emanate 20 when the receptacle 10 it molted to the
circuit board 12. Thea provide; an effeotlve mean for
cla3Dpirlg the Lyman down on the circuit board 12.
2û Each Simon 20 includes longitudinal ledge
I in each ox the r~pective Dow wall 53 end I why ah
it adapted to engage the re~;pectl~e stop surfaces 56~,
The body Hell 19 :Eurlther includel3 an alignment
pr~s~ection 58 at one end I which adapted Jo mate
18 I
with a corresponding alig~TenJc hole 11l thy- circuit
board I The cement 20 include at one end an
aligm[~nt projectional 61 adopted to eke in
corresponding ali~nmen'c hole I of the circuit board
S 12 when the emanate 2û are inserted in the cavities 48
of the Hell 19. The alignment projection so and 61
extend in a pod apart arrangement Assyria the anti no
receptacle lo and provide an effective mean for
aligning he receptacle on the at rcuit board 12 ennui
10 the projections teat in the alignmerlt hole 59 and 62.
The segments 20 can float particularly from side to
side within the body shell 19 tvla limited extent wince
each segment include its own alignment projection
system 61
Lo Very accurate allgr~ent of each segment it
,' achieved TV the at rcuit board 12 and there it no
buildup of any slur mimetic over the lerlgth of
the receptacle 10. They'll it a hilly significant lea use
wince lit it desired to pack a Ann contact a
pow bye lot each segment. It it a unique f nature of
- the prolate invention that a err high density of
electrical contact call be employed it toe receptacle
whole maintaining adequate ~l~gr~nent with the
corresponding contact pod 21 of the I rcuit board 12.,
19
Each ~egmellt 20 it camp ox a ~e~en'c body
- I which it arrallge~ to support two opposing row of
luring contact member 64. One end 65 of each spring
contact member comprises a contact portion for engaging
S a eorre~pondirlg contact pad 5 of a daughter hoard 11~.
The opposing end 66 of the spring contact member 64
compare a lever-type contact portion for engaging and
contacting the contact pad 21 of the mother board 12.
The use I ïever-type contact 66 and kink pad
10 provide a ga~-tight, high pressure connection The
end of the concoct portion 66 it forced into the
contact pad 21 and, my digging into it make good
electrical connection because it break through the
ode on the surface of the pad. With this type of
contact arrangement it I not Nasser to provide
good contact pads or gold plating of the portion 66. A
till-to-~cin connection, which it much lest eYpen~!3iVe9 if;
thereby pueblo. The concoct pad 35 on the daughter
board, however are normally gold plated.
The contact mummer 64 con }ye selected to be
signal carry~rlg~ such a the narrow contact sobers 32r
or whey can be power or current carrying 6uc1~ 'eke
relatively wider contact lumber 680 the segment 20
can therefcare have their furlc'c~ons tailored Al dew rod
for handling signal or power or any other unquote
which might be wreck rend
It it a preferred feature of the prevent
invention to provide the highest density of contact
5 member 64 in the segment 20. This it partially
accomplished by providing alternating high 32 and low
31 contact number in each respective row of contacts.,
Further, respective high contacts 32 in one rc7~ no
arranged in opposition to no pective low Contacts 31 in
10 the opposing row of contact member 64.
Correspondingly a low contact Al in the one row of
contact it an opposition to a high contact in the
opposing row of contact These high and low kink
32 and Al are adapted to engage two staggered raw of
is contact pads 35 a illustrated in Figure 1 by
staggering the contact pad 35 in Sue row as shun.
It is p~s~$ble to provide a higher density of
contact with a greater tolerance concerning the
alignment of the contact puritan 65 of each gent
with toe pad 35. Thy minimizes the wreck off
- mi~reg~str~ti~n be . wren the contact portion 65 ox the
repacks high an low contacts 32 end 31- of each
segment with the cvntl~ct p~d6 35~ It alto ennoble
reduced chance ox shorting in the event tint the
- contact portion 65 are slightly bent wince-- there
qllite a large distance between high contact in any
particular row This it alto true of the low corltact~.
This Isch~ne permit; the size of tube pads 35 to be
increased and minimizes the criticality_ of a passage
between the pod
A err of connector syfitems 10 can be
placed On a mother at rcuit board 12 with any type of
conventional hold down or clamping device 70 such a
the one illustrated in Figure 6. The clamping members
71 or 72 are arranged lo engage the step 55 in the side
.
walls 41 or 42. The clamping member 71 or 72 are
secured to the at rcuit board or mother hoard 12 by
bolt 73 or otherwl~e attuned to the at rcuit board 12
Jo a to enable the contacts 66 of the prig contact
member 64 to engage the pad US on the mother board
12. As previously described, the top surface 56
engage like ledge 57 of the segment 20 to hold the
segment 20 Jo that the contact 66 make good electrical
. 20 connection c> 'eke contact pad 35. The damping member
- 71 it adapted lo be employed between assign
receptacles 10 whereas the cleanup no member 72 to
adapted to clamp a free side 41 of the rec:ep~cie 10.,
A great deal of ~Elea~ibillty in construcltlng
,: .
pi
22
computer circuit board system it pueblo with- a design
owe this electrical c:orlnec~or stem 'rho receptacle 10
can have any multiple so segments 20; for example, 5,
7, 11, etch, a dullard. plurality of receptacle 10
5 can be arranged owe the Matthew board --it- aajarent
parallel relatiorlship a shown in Figure 1 and I
Ire desired, the receptacle cay extend beyond
the mother Inboard 12 Jo that additional connector
segment 20 it the receptacle 10 can be connected to
10 other type of plug portions and circuit connectors or
element;. For example, the receptacle 10 can encompass
the mother board a well as accommodate other totally
different pow of Seneca tons located completely off
the mother board.
Each of the segment 20 include a low or
zero ir~sertîon force mech~ni~n for - stem 30~ the
,,, contact ranter 64 on the embodiment shown n Figure 6
are budged toward the contact member of the opposing
row Jo that if they were on the r f fee state, they
20 should trike the pos~tionF: shown in phantom lo 'eke
_ .
right-harldl receptacle 10 ox Figure 6. -Lowe low
insertion force mechanism thereby employ Cody 33 and
oily I
Whorl the cay 33 it rotated lo position
23
- shown on the left-hand receptacle 10 of Figure 6 7
follower 34 moves upwardly to deflect the spring member
64 in cone row away f rum the spring member 64 on the
opposing row. This allow the circuit board 11 to be
5 inward in the Luke 40 with a low or zero insertion
force When the cam 33 it rotated Jo like posi~iQn~
shown in the r;ght-hand receptacle 10 of Figure 6, the
follower 34 it lowered to release the contact member 64
80 that the contact portion 65 engage the rejective
10 contact pad 35 of the daughter board 11. Preferably,
each segment includes it own separate f hollower member
34~ However, the cam member 33 preferably compare a
unitary member or metal rod extending through all the
segment 20 in the receptacle lo. The cam member 33
15 preferably ha an oblong or oval crow - cation.
The top surface 74 of the follower member it
arrange to engage the spring contact: 64 to deflect
them to pus thin apart or release them Jo that they
can engage the laughter board 11. The fc>llo~er member
20 34 ha a It shaped cros~-~ection ire it upper porltionO
- Whey it it poisoned a in the left-hand rustily 10
in Figure 6 for swept of the I fault board- 11, toe
by Tom owe tube l~hapedJ 75, err a top surface
for I Nina byway at rcuit board 11 during ill~ertlon.
24
The lower portion so the follower member 34
crow Elton 76, ha a hook-like shape Jo that when
the f of l owe r member r i wit Thor awn a in the n ght-hand
receptacle 10 in Figure 6 it it held dowry in the
5 withdrawn position by engagement between the cam 33 and
the hook-p~r'cion 76.
The segment body 63 include an outer segment
support member 77 and sun inner segment support ~egmellt
78~ The spring contact 64 are held in place between
10 the no pective support member 77 and I The inner
support member 78 alto eve to Support the cam and
follower member 33 and 34,
While the low or zero inrush force
mechanism 30 ha been described by reference to the
I embodiment particularly shown in figure my any diehard
low inrush force mechan~m con be employed
illu~rated by the Norris patent noted on the
background of this pal icatlon. While it it prey erred
in accordance with this invention, for the sprint
20 contact 3ae;nbers 64 it one row Jo be biased toward the
prig contact number I in the opposing Roy if
desired, a illustrated in the background of this
inverltionV the opposite approach can ID@ employer. In
such an oppos~Lt~ approach, thy follower member en
Lo
to deselect the spring contact 64 to have the contact
-
potion 65 engage the contact pod 35 or release the
wring contact Jo that they are. spaced apart in their
tree state
A illus'cra$ed it Figure 7, actuating lever
38 if secured to the cam 33. Tbi~ enable the operator
to rotate the cam 33 by moving the lever 3 8 between it
respective open and cloyed petunia illustrated no
Figure 4 and 5;, Alternatively, if desired; the lenqtb
of the lever 3 8 earl be made much longer Jo that an
operator need only reach to the top of the circuit
board area in order to turn it. This embodiment Allah
provide growler leverage on thy cam 33 for easier
operation. eke another approach adapted for rote
acutely it to ~ub~ti~ute a lever 79,, which by the use
of a ~ui'cable linkage 80 p~votally convected to the erred
81 of the lever 79, can be remotely actuated For
example, the linkage 8û can be brought out through a
hole, not shown, in the top of the card housing 13
20 shown in Figure by pulling up on the linkage 80,
the cam 33 I pi-voted to opera the receptacle for
ire ion of the at rculî board 11. By pushillg down on
the linkage 80, the reverse of the operation t~lces
plus.
I
26
Referring now to Figure 4-5 and 7~16, the
aligning and locking ye 22 and the! actuating system
36 will be de~crîbed in greater Doyle. A previously
described, the at inning and locking ~y8tem I it
5 compared of locking lever 23 and 24. The body Hell
19 include a support extension 82 at it end 44. The
lever I it pivotal supported about an extension bate
83 by mean of a split cylinder pin 84 inward through
hole 85 and 86 ion the respective lever 23 and base 83.
A second extension support bate 87 include a
squire hole 88 through which the cam 33 it inverted.
Prior to insertion of the cam 33, the actuating lever
37~ fork like projections 89, is positioned with a bate
87 between to leg of the fork like projection 89.
filet 90 in the foreclose projections 89 closely fit
the cro~-section of the cam 33,. the cam 33 Lo held
within the receptacle 10 after insertion. In erti3n
through each of the respective segment 20 by means of
a ply pun 91 inherited through hole 92 in the cam 33
within a slot 93 I bet illu~tY~ted in Figure 16. The
pun 91 eve to lock the cam in place end toe cast in
turn, err TV logic the actuating lever 37 in place.
referring not? Doria particularly to Tao
actuating no locking ~;yE~tem~ 22 end 36 a toe eddy Lo
27 'I
of he body Hell I reverence it had to Fugue 7-11.
The locking lever 23 include a first progeny I
which is adapted to be inserted in an alignment hole 25
on one wide of the circuit board 11~ it further
5 include a equaled projection 29 which is adapted to be
inverted in the notch 28 on one idea of the at Kowtow
board 11. the looking lever 23 also include a
folks portion I dew inked by the upper turf ace of one
of the support leg OWE The follower portion 39
it) includes a notch 96. The actuating lever 37 include a
tab 38 which acts a a cam. The follower portion 39
also includes a top portion 96 in operation when the
lever 37 i in it vertical position as shown. The cam
33 disengage the segment follower 34 that the
contacts 31 and 32 clove against the daughter Byrd
on Thea position, the tab or cast 3 8 has engaged the
ox portion 96 to pivot the lever 23 against the
circuit board 11 Jo what tube projection 27 and 29 teat
, .
on the respective hole 25 and phyla 28.
When the lever 37 it pivoted in the opposite
direction to pollution a shown in Figure 4, toe cam tab
I does not pivot the lever 23 until it enjoy the
top portisD 97 deponed by the lower wide of the lot
96, Therefore toe lever 37 move f rum the fitOp
28
portion 96 to the top portion 97, there it no movement
owe the lever I . overrode the cam 33 it rotated f fore
it clockwise actuation pushier lo islet; open actuation
position The tab 38 engage the lop partisan 97
5 Burr the lever 37 it rotated lo it co~r.pleltely opera
position,. Tory the t2lb 38 engage the Top portion
97, continued pivot on a downwardly direction of the
lever 37 cause the lever 23 to pivot away loom the
circuit Iboa'rdl thereby disengaging the projection 27
and 29 from the respective hole 25 and 810'!t 28.
Therefore when the lever 37 us moved from it cloyed
position to it open position, the contact are first
spaced ap~rlt under the action of the cam 33 and
follower 34 and then the locking lever Jo disengaged in
Lo a eerily fashion.
When the lever 37 it moved f row it open
pox on as it Figure 4 to it cloyed position in
Figure 5, a reverse err off ~peratiDn~ occur. When
the lever 37 it in it full Opel posy lion,, the tab 38,
20 due to tube piloting action ox thy lever 23~, Navaho into
the slot 96~. TherePore9 the upper wide Wylie ox . ye
lo 9 B it engaged by the flab 38 of the Lowry 37 it
beg to movement in an upwardly. dlr~ct~on. rho
Cole the lever 23 to pivot about pin 8Jl into its
29
lGckirl~ and aligrled position against the circuit board
11 with a small rotation of the lever. 37. This small
rotation however is in~ufficierlt to rotate the cam 33
sufficiently agaisl~t the follower 34 to close 'eke
5 contact. A the lever 23 pot under the action of
the pad 38 against the top portion I, the tab moves
out of the slot 96 just a the lever 23 fully Allah
and logic against the board 11. The lever 37 I
thereof ton f fee to continue rotation to it upward
lo position against the stop 96 and thereby release the
contact fur engagement with the circuit board
Therefore, the action of the cam 38 and follower I it
such that when the lever 37 it moved f rum it open
position to the closed position, shown in figure 4 and
15 5, respectively the circuit board it first already and
locked in place and then the contact are released to
engage the circuit board
In accordance with a prey erred embodiment of
this invention, the aligning and locking stem I and
20 actuating 8y8teml}; 36 include the second at inning and
locking lever 24 and a second actuating lever- 99. Thy
second lever 24 and the second lever 99 ore outed at
the oppo~ g end I of the body Hell 19. By Noah of
a support e%ten~ioTI 100, the extent n 100 include
support 101 about which the lever 24 p;votally
supported by a ply it pin OWE It extends through hole
103 in the lever 24 and 104 in the base 101. A
previously described, the cam rod 33 extend throl3gh a
slot 93 terminatirlg in a Corey hole 105 in a second
support bye 106 in the extension 100
The second actuating lever 99 includes a lot
90 which has a crow section closely corresponding to
the crow cation of the cam 33., The lever 99 it
positioned about the cram 33 between the lever 4 and
the upper base extension 106. The lever 99 inlays
tab 38 corresponding the tab of the lever 37.
Similarly the lever 24 include a follower portion 39
corresponding to the follower portion of the lever 23.
15Tbe follower portion include a lo including top
por~orl~ go and 98. It also includes top portion I.
The operation of fever 99 it tied to the
operator of lever 37 by the cam 33. The inner action
ox lever 99 with the lever 24 via the tab 333 and
oilier 39 it identical Jo the inner action previously
de~crlbed with the respect to the lever 37 and 23 zlnd~
Hereford not described again when tie lever 37
moved between it respective open and Clyde
potion, the fever 99 move between corre~pondi319
.
31 I
potion and interacts with the lever 24 in the same
manner a the lever 37 interact with the lever 23.
The projections 27 which serve to align and
lock the at rcuit board 11 in the receptacle lo are
5 tapered Jo that a slight misalignment of the circuit
board 11 doe not prevent at ignment and locking of Lowe
hoard into the receptacle. The taper ox the
projection 27 verve to move the board into it
properly aligned position. It should be apparent the
the colltact8 67 of the receptacle 10 cannot be closed
unwell the circuit board 11 it properly locked and
aligned within the receptacle. Any misalignment would
prevent the projection 27 and 29 f rum being inverted
in the respective alignment hole 25 and slot 280
15 This, in turn would prevent the pivoting of the lever
23 and 24 into their sully and aligned option The
._ failure of those levers to pivot o their fully aligned
and locked potion royalty in the tab 38 of the
lever 37 of 99 engaging the stop portion 96 on the
20 re~pecti~Te followers 39 Thy prevents further
pivoting of the lever 37 and the cam 33t- thereby
preventln5~ engagement of the contact to the circuit
board 11.,
urethra necessary what the projections
32
or alignment pin. 27 and 29 on both idea- of the
- receptacle 10 be seated in their re~pectiYe Hillel 25
and slow 28 in order to completely clove the contacts
67 so Tao receptacle llD9 Thus, the receptacle lever 37
S cannot be fully closed to the po~itlon shown in Figure
5 unless both corners of the circuit board 11 are fly
seated in the connector housing.. In the event ox a
rai~alignment, the operator cannot clove the handle 37
completely and mutt readjust the circuit board 11 Jo
10 that the alignment can take place. When the lever 37
it in the position of Figure 5, the circuit board
cannot be pulled out off the receptacle lo out the wide
of the receptacle 10~ unless the handle 37 first
pivoted to it open p~Eitis:n a shown in Figure 4.
It Schloss be underwood that the foregoing
decoration it oxlly lllu~trative of 'eke invention.
Voyeur alternative and modification Sheehan be devised
by those sidled in eke ark without departing $ wreck toe
invention. Accordirlgly, the present invention it
20 irltended to embrace all such alternatives,
modification and Yearns which full within the scope
of the appended Lomb.,
