Note : Les descriptions sont présentées dans la langue officielle dans laquelle elles ont été soumises.
~his invention relates to apparatus f'or terminating a
plurality o~ insulated conductors in respective insulation-
piercing contact portions o~ electrical connectors, and more
particularly to such apparatus which comprises structure for
establishing a reference plane through an electrical connector
to be terminated and structure for inserting conductors into
insulation-piercing contact equally well ~or different widths
of connectors.
Generally speaking, termination tools ~or inserting
insulated conductors into insulation-piercing portions o~ elec-
trical contacts mounted in electrical connectors provide a
connector support structure with apparatus ~or releasably en-
gaging the connector in a semi-permanent fixed relationship.
Although this technique provides satisfactory termination in
most instances, it has been determined that the actual dimensions
of connectors vary from one connector to the next, e.g., con-
nector transverse sectional height, due to manufacturing toler-
ances, and these tolerances cannot be tightened for economic
reasons, particularly when one is concerned with miniature con-
nectors.
For any given line of connectors, the female connec-tor
may be narrower at the rear or termination end than the cor-
responding male connector, For example, in a particular line of
connectors, the male connector is 0.80 inches wider than the
corresponding female connector in the transverse direction at
the termination end. It is therefore readily apparent that the
depth of penetration of the female connector will be less than
that of the male connector, which may cause improper or incom-
plete termination.
The primary object of the present invention is to
provide a new and improved termination apparatus, particularly
field termination apparatus, for terminating a plurality of
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free-ended insulaLed conductors in respective insulation-piercin~
portions of contacts of an electrical connector,
A more specific object of the invention is to provide
termination apparatus which establishes a reference plane through
an electrical connector immediately adjacent the insulation-
piercing portions of the contacts o-f the connector.
Another object of the invention is to provide termi-
nation apparatus for terminating electrical connectors having
different transverse widths,
Another object of the invention is to provide termi-
nation apparatus which includes a floating connector support for
equalizing forces applied across a connector by oppositely di-
rected insertion members.
According to ths invention, a device is disclosed for
use in a terminating apparatus of the type wherein insula-ted con-
ductors are electrically and mechanically connected to respect-
ive contact portions of an electrical connector which is suppor-
ted on a connector support comprises connector holding means for
holding the connector including movably mounted first means which
releasably engages the connector immediately adjacent the contact
portions and second means urging the connector into engagement
~ with the first means to establish a reference plane through the
: connector at the point of engagement o~ the connector and the
first means. .
According to .the invention, an electrical connector
is mounted agalnst an end stop to de~ine a cooperable relation-
ship between the insulation-piercing contact portions thereo~
and insertion members which are rotatable toward the connector
to engage and press insulated conductors into respective ones of
30. the insulation-piercing contact portions, The general structure
of an electrica]L connector which may be terminated by ~pparatus
constructed in accordance with the invention includes a longitu-
dinally extending slot on opposite sides thereo~O The connector
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support includes a wave or blade spring for urging the connector
upwardly and a pair of members, here in t;he form of conductor
separatiOn and cutting combs, include respective downwardly ex-
tending edges for extending into the respective longi:tudinal
slots to engage the connector and define a reference plane there-
through immediately adjacent the :insulation-piercing contact por-
tions of the connector.
The conductor separation and cutting combs are movable
transversely of the connector under the control o~ a lever ar-
rangement so that a connector may be received upon and removed
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from the connector support, As will become apparent ~rom the
following descrip-tion, the conductor separa-tion and cutting combs
are resiliently mounted to provide a :Eloating feature ~or the
connector support for ef~ecting equalization o~ ~orces across
the connector during conductor insertion,
Insertion of the insulated conductors into the insu-
lation-piercing portions of the connector contacts is provided
by a pair of multi-blade insertion members which are carried on
rotatably mounted arms for pivoting toward opposite sides of the
electrical connector~ The lower edges of the individual in~
sertion ~lades constitute cutting edges which cooperate with -the
rear edges of the comb slots to sever the individual conductors
immediately prior to insertion thereo~ into the insulation-
piercing portions of the contacts. This sequential cutting and
insertion operation provides a simple technique for cutting all
of the conductors and a reduction of forces necessary in termi-
nating the conductors, As the insertion members engage the con-
nector, the insertion forces across the connector are equalized
by the floating arrangement of the resiliently mounted combs.
In order to provide for equally satisfactory insertion
in connectors of different widths, one of the rotatable insertion
arms remains ~'fixed" with respect to its relation to the con-
nector support structure, while means are provided for moving
the other insertion arm toward and away from the connector sup-
port structure depending on the width of connector to be termi-
nated, i.e.l male or female connector. In two embodiments of
; the invention the connector support and one o-P the insertion armsare moved with respect to the other insertion arm. In a first of
these embodiments, this is accomplished by rotating a threaded
rod to draw or push, as the case may be, the aforementioned ap-
paratus toward and away from each other along a set of guide
rails. In a second embodiment this movement is accomplished,
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again along the guide rails, by rotating a rod which carries a
cam that is cooperable with a cam follower carried by the fixed
portion of the structure. In a third embodiment of the invention,
the a~is of rotation of one insertion arm is moved transversely
with respect to the remainder of the termination apparatus. In
this embodiment of the invention, means are provided for changing
the resulting slight a~gle of incidence o~ the insertion blades
carried by the arm so that insertion remains in a direction per-
pendicular to the connector and penetration is equal for all o~
the blades.
It has been determined that when a plurality of con-
ductors are severed by a cooperable insertion blade-comb combi-
nation as the insertion blades are pivoted into engagement with
the conductors, the insertion blades have a tendency to ride-up
and over the combs, resulting in incomplete and/or ragged cutting
of the conductors. Therefore, means are provided for urging the
insertion arms downwardly during the cutting operation. This
means includes a spring loaded ball which rides against the
upper face of a cutting arm near its axis of rotation, and an
angularly mounted stud for engaging a similarly inclined surface
of a toggle arm carried at the distal end of the insertion arm
for urging the distal end of the insertion arm downwardly as the
toggle arm engages and cams about the angularly mounted stud.
The above and other objects, features and advantages
of the invention will become apparent from the following detailed
description of the invention taken in conjunction with the ac-
companying drawings, on which:
FIG, 1 is a pictorial representation of an embodiment -
of the invention; ~
,:
3~ FIG. 2 is~a sectional view of a portion of the apparatus
; of FIG. 1 taken generally along the parting line II~
FIG. 3 is a view of the connector support spring
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structure ~or the apparatus illustrated ill FI~, l;
FIG, ~ is a secti.on~l view taken generally alo~g the
line IV-IV of FIG. l;
FIG, 5 is an illustration o~ the relationship between
the angularly mounted stud and the toggle arm o~ the apparatus
illustrated in FIG, l;
FIG, 6 is a pictorial representat~on o~ apparatus
similar to that shown in FIG, 1, but having a di~eren-t mechanism
for moving the connector support with respect to one o~ the in-
sertion arms;
- FIG, 7 is a plan view of a portion of a terminating
apparatus similar to that illustrated in FIG, 1, but showing a
further mechanism for displacing an insertion arm relative the
connector support structure;
FIG, 8 is an end view of structure for forcing the
distal end of an insertion arm downwardly to promote even
severing of the conductors;
FIG, 9 is a sectional view taken along line IX-IX o~ '.
FIG, 1 showing preferred apparatus for adapting the termination
apparatus for different sizes of conne~tors; and
FIG, 10 is a plan view ta~en along the line X-X o~
FIG, 90
Referring to FIG, 1, a terminating apparatus is gene-
rally illustrated at 10 as comprising a frame 12 which includes
downwardly extending rear legs 14 (only one shown), a pair of
downwardly extending ~ront legs 16 and 18, and a horizontal
table member 20 carried by the legs 14, 16 and 18. ' .
A pair of base members 22 and 24 on the left hand side
of the.apparatus are fixed to the table member 20, and may be
either a two-piece or one-piece construction. On the right hand
side of the apparatus is a base 26 and a base 28 which may ad-
vantageously be a one-piece structure, in that they are con- :
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structed to m~ve together laterally of the apparatus 10, as will
be described below.
In a recessed area 30, the bases 22, 24 and 26, 28
include respective portions 32 and 34 which are carried on the
table member 20 (FIG, 2). An electrical connector 36 is carried
on the base portion 3~ and includes a ~orward end 38, a plurality
of contact carrying slots 40 in parallel rows on each si~e o~ the
connector, a longitudinal slot 42 along the rear end o~ the con-
nector and a plurality o~ slots ~4 which communicate the slots
40 with the slots 42, The connector 36 also includes a pair o~
longitudinally extending slo-ts 46 and 48 on respective sides
thereof immediately adjacent the insulation-piercing portions
(not shown) of the contacts o~ the connector 36. A wave or
blade spring 50 is mounted on the base portion 34 by means o~
a screw 52 to engage the ~orward end 38 of the connector 36 and
urge the connector in the upward direction.
An end stop 54 (FIG, 1) is provided to receive an end
of the connector 36 in abutting contact. A pair of conductor
combs 56 and 58 are resiliently mounted on each side o-~ the con-
nector support structure and include respective downwardly ex-
tending edges 64 and 66 -for extending into the respective slots
46 and 48 and contacting the connector against the bias provided
by the blade spring 50~ As the connector 36 is urged upwardly
against the edges 64 and 66, a reference plane is established -~
immediately adjacent the insulation-piercing portions o~ the
contacts of the connector.
The comb 56 is provided with a plurality o~ slots 60
and the comb 58 is provided with a plurality of slots 62 ~or
receiving individual conductors 126 o~ a cable 120 a~ter the
same have been dressed through the connector slots 4~ and draped
through the slots 60 and 62. ~-
Referring to the right hand side o~ the apparatus il-
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lustrated in FIG. 1, each of the combs includes an aperture 68
~or receiving and sliding about a pin 70, a pin 72 being the
only other such pin shown, and is biased -toward the connector
by a spring 74 disposed in a cou:nterbore 76 and pressing against
a cylindrical bushing 78.
In order to open the combs so that a connector may be
placed upon the blade spring 50, a pair o~ levers 80 and 82 are
provided and pivotally mounted, as indicated at 84, so as to
push the combs outwardly by movement o~ the end 86 o~ the lever
against a portion 88 of the comb as the outer ends of the levers
80 and 8~ are moved toward each otherq With the connector po-
sitioned against the end stop 54 and urged upwardly by the
spring 50, the levers 80 and 82 are operated so as to permit
the springs 74 to return the combs toward each other so that the
downwardly extending edges 64 and 66 snap into the slots 46 and
48, respectively,
The cable 120 is supported at the rear by a pair of
; upstanding portions 90 and 92 having respective downwardly and
inwardly directed surfaces 94 and 96 which form a V-shaped cable
support, and by a rounded slot 122 in an upstanding block 124.
A pair of insertion arms 98 and 100 are rotatably -~
mounted to the upstanding portions 92 and 90 at respective
pivots 102 and 104, The insertion arm 98 in FIGo 4 is rotated
forward, as in an insertion operation, with respect to the posi-
tion illustrated in FIG. 1. A toggle arm 106 is rotatably ~;.
mounted to the insertion arm 98 by a pin 108 and a toggle arm
110 is rotatably mounted at a pin 112 to the insertion arm 100. ~:
The insertion arm 98 carries a multi-blade insertion member 114,
which is connected from below by screws or the like, and the
insertion arm 100 carries a multi-blade insertion member 116 of
similar construction, The individual blades have been references
118 and, as mentioned above, have sharp lower edges (284, FIG. 9)
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to cooperate with the sharp edges 130 OI the comb slots ~or
severing the individual conductors 126 immediately prior to
insertion. A conductor dressing schedule 128, in the form O:e
a color code chart or the like, may be mounted adjacent the
combs 56 and 58 to great advantage.
After the connector has been mounted and provided a
reference plane as described above, the individual conductors
126 may be dressed through the connector slots 44 and the comb
slots 60, 62 in accordance with the coding provided by the
schedule 128. The connector is then ready for termination,
To sever the conductors at the proper length and to
insert--the same into--the-insulation-pier-~ing contact portions
of the connector 36, the insertion arms 98 and 100 are rotated
toward each other about their respective pivots 102 and lOa~ to
place the insertion members 114 and 116 adjacent the conductors
126. As the insertion arms 98 and 100 are rotated, a pair of
spring loaded mechanisms 148 and 150, respectively, press down
on the upper faces of the arms, as can be seen in greater detail
in FIG. 4. The spring loaded mechanism 148 in FIG, ~ includes a
threaded cap 152 having a bore 154 therein for receiving a spring
156 which urges a ball 158 against the upper surface 160 of the
arm 98. In FIG. 4, the pivot pin 102 is shown directly behind
the spring loaded mechanism la~80
At the other ends of the insertion arms 98 and 100,
the toggle arms 106 and 110 are provided with respective angled
surfaces 132 and 134 which engage and cam about respective angu~
larly extending studs 136 and 138 carried by the ~ase members 26
and 22, respectively, In one construction, the angle of a stud
with respect to its base member was ~rom 10 to 15, With this
toggle and camming structure, the distal ends o:E the arms 98 and
100 are pressecl downwardly as the toggle arms 106 and 110 are
rotated toward each other and cam about the studs 136 and 138.
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The spring loaded mechanisms 148 and 150 and the
toggle-cam constructions, prevent -the insertion members ~rom
riding up during -the cutting operation so that clean, complete
and even cutting of the conductors is accomplishe~O
As the arms 9~ and 100 are rotated toward the insertion
position and are forced downwardly by the cam-toggle mechanism,
they ride along respective upstanding edges 14~ and 146 o~ the
bases 26 and 22. The bases 22 and 26 also include upstanding
portions 142 and 1~0, respectively, which serve as stops ~or
the arms 100 and 98, respectively, to indicate completion o~
the inse~tion operation.
As the blades 118 o~ the insertion members 114 and 116
engage the connector 36 via the individual conductors, ~orces
are created transversely of the connectorO With the combs 56
and 58 floating, i.e., movable along the pins 70 and 72, ~orces
are equalized across the connector and equal insertion is pro-
vided for all of the conductors~
Re~erring in particular to FIG. 1, the table member 20
is provided with an upstanding guide rail 162 which is received .
in a complementary slot 164 in the base 26, and an upstanding
T-shaped rail 166 which is received in a complementary T-shaped ;.
slot lG~ in the base 26, Likewise 9 at the rear of the apparatus,
an upstanding rail 170 is received in a complementary slot 172
of the base 28 and an upstanding T-shaped rail 174 is received
in a complementary T-shaped slot 176 in the base 28~ This rail -
and slot structure provides a controlled even movement of the
base 26, the base 28, the base portion 34, and all of the ap-
paratus carriecl thereon on the right hand side o~ the apparatus,
with respect to similar structure which is ~ixed to the table
member 20 on the opposite side of the apparatus. In FIG. 2 9 for
example, the base portion 34 is movable along the table member 20,
as indicated by the double headed arrow next to that base portion,
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while the corresponding base portion 32 is ~i~ed with respect to
the table member 20. Positioning of the apparatus on -the right
hand side of the machine, including the supported connector, with
respect to the apparatus.on the left hand side of the machine
provides for proper and complete insertion of conductors into
connectors having different transverse widths in the area of
their rear or termination portions, For example, as previously
mentioned, a male connector and a corresponding female connector
generally have different widths in this area, amounting to several
tens of thousandths of inches, Several mechanisms are available
in the art for moving one of the structures with respect to the
other, The mechanism illustra-ted herein employs a rod 178 which
extends through a bore 180 and is rotatably secured in the base
28 by a bearing 182 fixed to the base 28, and a threaded end 184
of the rod 178 which engages a threaded bore 186 in the base 24,
Conversely 9 the bore 180 may be a threaded structure and the left
hand end of the rod may be fixed for rotation in the base 24, in
either case, rotation of a lever 188 against the stop 190 posi-
tions the structures closer together for a female conne~.tor,
indicated by the F, and rotation of the shaft 178 by 180 where
the lever 188 is positioned against stop 192, spreads the
structures apart for the wider male connector, indicated by the
M reference,
. Referring to FIG, 6, the same general structure for
accommodating di~erent widths of connectors, is illustrated
with a different mechanism for positioning the bases 26 and 28
with respect to the bases 22 and 24, A rod 194 extends longi~u-
dinally through the apparatus through bores (not shown) and
carries a lever or handle 196 at the forward end o~ the apparatus
to point toward respective references M and F to indicate male
and female settings. Toward the rear end o~ the apparatus, in
the area of the rail 170, the rod 194 is provided with a cam 198
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which rotates in a hollow cam ~ollower 200. With the cam 198
fixedly associated with the bases 26 and 28 and the cam follower
fixedly associated with the table member 20, the upper structure
is moved transverseIy of.the termina-tion apparatus with respect
to the lower structure. Therefore, the insertion arm 98 and the
cam stud 136 are both moved the same amount with respect to the
opposite side of the termination apparatus, as was the case with
the structure illustrated in FIG, 1.
Referring to FIG. 7, a different mechanism for repo-
sitioning one of the insertion arms with respect to the other
insertion arm is illustrated for apparatus generally the same
as that shown in FIGS, 1 and 6. In FIG, 7, the front of the
apparatus is at the left hand side of the drawing and the rear
of the apparatus is at the right hand side of the drawing. An
upstanding and overhanging hood type structure, without a
; V-shaped cable support is illustrated at 202 for rotatably
mounting a pair of insertion arms 204 and 206, Only the insertion
arm 204 has been completely illustrated and is shown as comprising
an insertion member 208 having a plurality of insertion blades
210. A toggle arm 212 is pivotally mounted at the distal end of
the insertion arm 204 by means of a mechanism which will be ex-
plained hereinafter in detailO
Referring now, however, to the axis of ro-tation of the
insertion arm 204, a circular eccentric structure 214 includes
axially misaligned cylindrical portions 216 ~mounted in the arm
204) and 218 (mounted in the base below the arm 204). The
cylindrical portion 218 includes a pair of diametrically opposed
notches 222 for receiving a ball 220 which is spring loaded by a
spring and cap ,assembly 224 loaded in a bore 226. Rotation of I
the eccentric with a tool, such as a screwdriver, in a slot on
.the top end of the eccentric (not shown) moves the axis of rota-
tion of the arm 204 toward and away from the arm 206.
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In this embodimen-t of the invention, the connector
support is fixed and does not move transversely with the arm
204 as was the case in the previous embodiments of the invention.
There-fore, as the a~is o~ rotation of the arm moves toward and
away from the center of the termination apparatus, the angle of
incidence of the individual insertion blades 210 changes with
respect to the connector. To compensate for this angular dispo-
sition with respect to the connector, correct and complete in-
sertion of all conductors along the sides of the connector is
provided through an eccentric mounting of the toggle arm 212,
This eccentric 230 includes a pair of cylindrical axially mis-
aligned portions 232 and 234, the portion 232 being disposed in
the arm 204 and the portion 234 being disposed in the arm 212,
A similar screwdriver adjustment is provided for operating this
mechanism. The cylindrical portion 232 is provided with a pair
of notches 236 located in the periphery thereof at diametrically
opposed positions to receive a ball 240 which is spring loaded
by a spring loaded cap screw 242 disposed in a threaded bore 244.
In addition, the connector support structure, including the
resiliently mounted combs, provides for equalization of insertion
forces.
Proper positioning of the eccentric 214, 230 results in
audible '9clicks" as the balls 220 and 240 are urged into the
respective notches 222 and 236 thereby providing a positive in-
dication of correct positioningO
The toggle arm 212 is provided with an angled surface
248 to engage àn angularly disposed pin 246, cf. 132, 136 FIG. 1,
to provide a downward force on the distal end of the insertion ~ ~
arm 204 during the cutting and insertion operations and, in ~-
connection with the eccentric mechanism 230, effects e~ual pene-
tration of all insertion blades.
Referring now to FIG. 8, a simplified structure for
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-~orcing the distal end o~ the insertion arm downwardly as il-
lustrated at 250 wherein the upstanding portion 1~0 o~ the base
26, which ~unctions as an arm stop, is provided with an over-
hanging portion 252 having a downwardly angled lower sur~ace
254 As the insertion arm traverses the upstanding edge 144,
and engages the surface 254, it is urged downwardly to prevent
a lifting of the arm and uneven cutting of the conductorsO A
rounded surface 256 which develc>ps into the sur~ace 254 may be
provided to guide the insertion arm.
Referring now to FIGS 9 and 10, the structure o~ the
insertion blades is illustrated in greater detail along with a
simplified structure for positioning the insertion blades
relative a connector to adapt the termination apparatus to
connectors of diiierent widths. In this embodiment of the in-
vention, as with the embodiment illustrated in FIG. 7, and with
the exceptions of the floating connector support structure and
the rotatable insertion arm structure 5 the entire insertion ap-
paratus is a fixed structure.
The adjustment mechanism is generally illustrated in
FIG. 9 at 260 as comprising a pair of parallel bores 262 and 264
which extend vertically through the insertion arm 98 and commu-~
nicate with each other by way of a common milled out portion 266
to form a slot having a general cross section of a figure eightO
The bores have respective countersunk portions 268 and 270 ~or
receiving a complementary shaped head portion of a screw, for
example an Allen head screw (not shown). The screw extends
through one of the bores 262, 264 and into a threaded bore 272
of the insertion member 114.
In the position illustrated in FIG. 9, the insertion
member 114 is adjusted for deeper penetration, iOe., a narrower-
connector. In the examples given above, this adjustment would
be for use with a female connector. To adjust the termination
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~L~69Z1 33
appara-tus for use with ~ wi~er connecto:r, i.e., a male con~
nector, the screw is loosened so that the conical portion
thereof clears the countersunk portion 268, the screw and in-
sertion member are moved.toward the right, and the screw is
then tightened against the count;ersunk portion 270 of the bore
264 and is thus provided with a self-cen-tering ~eatureO
The insertion member 114 is i~lustrated as comprising
at least one insertion blade 118 which, in turn, comprises a
first insertion portion 274, a second insertion portion 276, and
a third insertion portion 278, and a pair of intermediate notches
280 and 282, The insertion portions and notches are shown posi-
tioned directly across from a conductor 126 and a connector
channel 286 having an insulation-piercing portion 288 of a con-
tact mounted therein. The contact portion 288 illustrated in
FIG, 9 is representative of the types of insulation-piercing
contacts used in a variety o~ connectors and comprises a pair
of inwardly lanced sections 290 and 292 which have opposing
corresponding lanced sections (no-t shown) which receive the con-
ductor therebetween and cut the insulation thereo~ to provide
: 20 electrical and mechanical terminationO The notches 280 and 282
are aligned with the lanced sections 290 and 292, respectively,
while the insertion portions 274, 276 and 278 extend to completely
insert the conductor against the bottom 294 of the contact portion ~
288. The insertion portion 274 may also be utilized ~or forcing :.
the cable end o~ the conductor into the channel 286 ~or additional
strain relief of the conductorO
A cutting edge 130 of a comb is also illustrated in
FIG. 9 as bein~ aligned with the lower edge 284 of the insertion
blade 118. As set ~orth above, the lower edge 284 cooperates
with the sharp edge 130 to sever the conductor immediately prior
: to inser~ion. !-
It is readily apparent from ~he foregoing that the
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objects of this invention have been fulfilled by a variety o~
embodiments~ The embodiment illus-trated in FIG, 7 is generally
preferred over that illustrated in FIGS. 1 and 6 in that it
- requires less machining and milling operations than are necessary
in providing -the guide rails and complementary slots in an accu-
rate and spaced relationship. Ey the same token, the adjustment
mechanism of FIG. 10 also enjoys a fixed base structure and is
preferred over the embodiment illustrated in FI~. 7 for several
reasons including the necessity of a single adjustment mechanism,
the necessity for fewer parts in the adjustment mechanism, and
greater simplicity in the mechanism in general.
The embodiments of the invention detailed with respect
to FIGS. 1, 6, 7, 9 and 10 have been illustrated as being
adjustable between two positions for use in particular with
respect to male and female connectors, however, several relative
positi`ons of the insertion arms or insertion blades and the con-
nector support may be provided to accommodate a variety of con-
nector widths through the utilization of a plurality of stops,
for example detent stops, a series of communicating insertion
- 20 arm holes, etc. 7
Although we have described our invention by reference
to particular embodiments thereof, many changes and modifications
of the invention may become apparent to those skilled in the art
without departing from the spirit and scope of the invention. We
there-~ore intend to include within the patent warranted hereon
all such changes and modifications as may reasonably and properly
be included wil,hin the scope of our contribution to the art.
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