US3727172A - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
US3727172A
US3727172A US00167317A US3727172DA US3727172A US 3727172 A US3727172 A US 3727172A US 00167317 A US00167317 A US 00167317A US 3727172D A US3727172D A US 3727172DA US 3727172 A US3727172 A US 3727172A
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United States
Prior art keywords
contact
openings
forward end
fingers
abutment
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Expired - Lifetime
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US00167317A
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English (en)
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K Clark
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Deutsch Co Electronic Components Division
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Deutsch Co Electronic Components Division
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/623—Casing or ring with helicoidal groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G15/00—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type
    • B60G15/02—Resilient suspensions characterised by arrangement, location or type of combined spring and vibration damper, e.g. telescopic type having mechanical spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/424—Securing in base or case composed of a plurality of insulating parts having at least one resilient insulating part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/625—Casing or ring with bayonet engagement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
    • H01R43/20—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for assembling or disassembling contact members with insulating base, case or sleeve
    • H01R43/22—Hand tools
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/422—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means
    • H01R13/4223—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means comprising integral flexible contact retaining fingers
    • H01R13/4226—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means comprising integral flexible contact retaining fingers comprising two or more integral flexible retaining fingers acting on a single contact

Definitions

  • Carr ABSTRACT An electrical connector that includes an insert assembly held in the shell by means of outwardly projecting lugs on the insert that are rearwardly moved through longitudinal slots in the shell upon assembly, followed by rotation of the insert to position the lugs between opposed shoulders on the shell, which thereby prevents relative axial movement of the shell and insert.
  • the insert includes continuous openings between the forward and rearward ends, each of the openings receiving a contact which is retained between a rearwardly facing shoulder in each opening and integral resilient fingers on the insert, which incline forwardly and inwardly from the circumferential wall of the opening to engage the rearward contact shoulder.
  • the openings for the contacts include tapering surfaces which contract a longitudinally split insertion and removal tool so that it can enter a smaller portion of the opening adjacent the spring fingers as the contact is installed and removed, allowing the tool to be more readily manufactured in smaller sizes with a relatively wide longitudinal slot.
  • the plug and receptacle are held together by a bayonet coupling that includes pins on the receptacle which enter grooves in a rotatable but axially fixed coupling ring around the plug shell, the bayonet grooves including inner have no orwardly inclined recesses at their inner ends.
  • a detent to prevent inadvertent rotation of the coupling'ring after the connector has been mated is provided by a leaf spring which is carried by the plug shell and has an outwardly projecting portion adapted to enter a recess in the inner wall of the coupling ring.
  • V/V77/ M (mew fow bi PAIENTEnAPRmma 3,727, 172
  • the Prior Art Electrical connectors conventionally include a plug and receptacle, each of which has an insert of dielectric material provided with multiple openings within which the electrical contacts are retained.
  • the insert is introduced from the rearward end into a metallic shell, where it is held against an abutment by means of a nut.
  • the nut is subject to loosening during service, so that there is no positive assurance of retention of the insert.
  • Such loosening of the nut will allow the insert to move rearwardly even when the plug and receptacle are coupled, and can result in the separation of the contacts and the interruption of their electrical circuits.
  • this arrangementfor retaining the insert wastes space within the shell, adding to the size of the connector.
  • each contact opening includes a rearwardly facing shoulder.
  • a metal retaining clip that fits within the opening, having a split outer sleeve portion received between shoulders defined by a circumferential recess in the wall of the opening, while spring fingers incline forwardly and inwardly from the sleeve portion of the retainer clip.
  • the contact includes an annular enlargement that defines forwardly and rearwardly facing shoulders. The contact is held in the insert of the connector by positioning its forwardly facing shoulder adjacent the rearwardly facing shoulder of the insert and the rearward shoulder of the contact against the ends of the spring fingers of the retaining clip.
  • U.S. Pat. No. 3,158,424 provides an illustration of this contact retention system.
  • any moisture that found its way into the insert could travel to all of the contact openings rather than being confined to only one as where the contact openings are separated.
  • the inserts of these connectors were made of nylon, which absorbed moisture and lost its strength when exposed to water, and could not withstand elevated temperatures.
  • a bayonet coupling mechanism In order to secure the plug and receptacle of the connector together, a bayonet coupling mechanism frequently is used.
  • This may include pins projecting radially outwardly from the shell of one of the sections of the connector, which are adapted to enter grooves in a coupling ring provided on the other section of the connector.
  • the grooves have entrance portions at the forward end of the coupling ring, from which the grooves extend inwardly, terminating in recesses that extend back toward the forward end of the coupling ring.
  • the pins enter the bayonet grooves as the connector is moved toward the mated position, moving to the inner ends of the grooves as the coupling ring is rotated.
  • the coupling ring is engaged by a spring biasing it axially so that the bayonet pins are moved into the recesses at the ends of the bayonet grooves upon the termination of the rotation of the coupling ring.
  • the spring force holding the pins in the recesses acts as a detent that retains the coupling ring against inadvertent rotation.
  • This arrangement means that the plug and receptacle are moved toward each other a distance beyond their normal mated position before the pins are allowed to enter the recesses at the ends of the bayonet grooves. As the pins are moved into the recesses, there is a slight separational movement of the connector plug and receptacle. Also, it is possible for the coupling ring detent spring to be overcome by an outward pull on the two sections of the connector. This can allow some separation of the plug and receptacle so that the contacts move relative to each other toward an unmated position. Therefore, in order to assure electrical continuity through the connector under all conditions, the pin and socket contacts must be made sufficiently long to permit some relative movement between them without causing disengagement. Consequently, the connector must be made large enough to accommodate the longer contacts, despite continued requirements for reduction in the size and weight of electrical connectors.
  • Lugs project outwardly from the insert and slide through the longitudinal grooves as the unit is assembled by moving the insert intothe shell from the forward end.
  • the insert is rotated to positionthe lugs in the circumferential recesses between the shoulder and the abutments.
  • a suitable connection such as bonding, holds the insert against reverse rotation.
  • This construction means that the inserts cannot move rearwardly past the annularshoulder, so that the inserts are held positively under vibrational and other loads imposed during use. Once the connector has been coupled, the inserts will remain fixed and cannot move so as to disengage the contacts. Also, by assembling the insert from the forward end, more available space is provided inside the shell, increasing the number of contacts that may be included in a connector of a given size. Virtually the entire interior dimension of the plug shell can be used in retaining contacts, allowing the receptacle shell, where excess space necessarily is present, to accommodate a comparably increased number of contacts.
  • the insert which is made of a moistureand temperature-resistant plastic, are integral resilient fingers in each of the contact openings. These fingers project inwardly from the circumferential wall of the opening rather than extending into an open cavity.
  • the contact openings are continuous from the forward to the rearward end of the insert, and the openings are isolated from each other. Better assurance. of contact alignment and positioning is obtained in this manner.
  • a dielectric barrier is provided between all adjacent contacts. Also, moisture or other foreign matter will not travel throughout the interior of the insert if it should enter one of the contact openings.
  • the insert is made in two portions bonded together forwardly of the ends of the retention fingers. This positions the bond line away from the bases of the fingers so that nothing will be squeezed out'during the bonding in an area that could interfere with the fingers.
  • the forward ends of the fingers are made thicker than the bases of the fingers, and provided with radial edges to engage the contact shoulders.
  • the finger ends also include inner surfaces that v are cylindrical segments to complementarily engage the barrels of the contacts. This stabilizes the ends of the fingers to increase their column strength.
  • the larger cross-sectional area at the finger ends provides greater strength and load-carrying capacity both in bending and in shear.
  • the thinner base portions of the fingers have requisite flexibility to allow contact insertion and removal without suffering damage.
  • the metal contact retained by the integral plastic fingers generally resembles those of conventional type. However, its rearward shoulder is not radial but, instead, is undercut. This gives it a frustoconical configuration as it tapers toward the forward end of the contact.
  • the undercut shoulder has the effect of stabilizing the free end of the finger so that the fingers column strength is enhanced significantly. Increased stability also is realized from the complementary engagement of the cylindrical segmental surface of the finger with the periphery of the contact.
  • the undercut shoulder helps keep the cylindrical segmental surface properly engaged with the contact surface to increase the stability of the finger.
  • the stabilizing effect is improved by the fact that the plastic of the finger is softer than the metal of the contact, so that the finger at its radial surface becomes distorted and the contact becomes, in effect, embedded in it.
  • the undercut shoulder also keeps the inner corner of the finger end away from the fillet that necessarily is produced in machining the contact at the location between the rearward shoulder and the cylindrical barrel of the contact. With a radial contact shoulder, the corner of the finger will strike the fillet, which acts as a cam directing the finger outwardly toward a position where it disengages the shoulder. This situation is avoided where the shoulder is undercut, without sacrificing strength or recessing of the finger end. While achieving these beneficial effects, the connector with the integral plastic fingers of this invention at the same time is readily producible by molding.
  • Each contact opening includes a rearward portion of relatively large diameter, which connects through an inwardly tapering part to a forward portion of smaller diameter adjacent where the fingers project inwardly.
  • the tool inwardly, includes a tapered shoulder connecting to a portion of large exterior transverse dimension.
  • the tool Upon removal, the tool engages the fingers forwardly of their connecting points so that there is a finite portion of each finger that is allowed to bend immediately to avoid breakage.
  • the end part may be relieved circumferentially so that not all the fingers will be engaged by the tool. This insures engagement of the contact shoulder by at least one finger so that the contact will be held in place when the tool is removed.
  • the resilient elastomeric gasket on the forward face of the insert of one of the connector sections is radial and without any forward projections.
  • the other rigid forward face on the insert of the mating connector section has only an annular ridge or bead around each of the contact openings. This ridge engages the flat gasket face when the connector is mated to effect a seal around each of the openings.
  • the sealing arrangement therefore, does not depend upon the wedging of a projection on the gasket in an opening in the mating part, and, therefore, is little affected by swelling due to the presence of oils. This obviates the difficulty in mating the connector as the required axial force does not become too large.
  • the coupling mechanism provides a secure bayonet connection, but does not depend upon the bayonet pins and grooves to provide the detent that holds the coupling ring against inadvertent rotation. Instead, there is a separate vdetent for this purpose. Consequently, the grooves in the coupling ring are made circumferential in their inner portions, falling entirely in a radial plane and with no recesses at their inner ends for receiving the bayonet pins. Thus, when the coupling is moved to its mated position, the maximum relative axial movement of the plug and receptacle takes place as the bayonet pins enter the inner groove portions.
  • the coupling ring is axially fixed relative to the plug shell, unlike prior designs in which the coupling ring could by moved by overcoming a spring force.
  • a spacer washer is used to position the coupling ring axially so that the forward edge of the bayonet groove is a predetermined distance from the forward face of the plug insert. Measurements are taken so that a washer of proper thickness may be selected to accomplish the correct spacing between the groove and the insert.
  • the distance between the opening for the bayonet pin and the forward face of the receptacle insert is measured. Then, a bayonet pin is selected of a diameter such that its rearward surface is a predetermined distance from the forward surface of the insert.
  • the detent for the coupling ring is provided by a leaf spring which is held by the plug shell and has a central portion which is adapted to enter a recess in the inner circumferential surface of the coupling ring. This occurs when the coupling ring has been rotated to where the bayonet pins are properly positioned at the inner ends of the grooves. The spring is cammed out of the recess for reverse movement in the unmating of the connector.
  • FIG. I is a perspective view of an electrical connector made in accordance with this invention.
  • FIG. 2 is an exploded perspective view of certain portions of the connector, including in particular the parts used for coupling the plug and receptacle;
  • FIG. 3 is an enlarged longitudinal sectional view of the connector in the mated position
  • FIG. 4 is an exploded perspective view, partially broken away, of the plug insert and shell
  • FIG. 5 is a transverse sectional view taken along line 5-5 of FIG. 3;
  • FIG. 6 is a transverse sectional view taken along line 6-6 of FIG. 3;
  • FIG. 7 is a fragmentary sectional view taken along line 77 of FIG. 5;
  • FIG. 8 is a fragmentary enlarged perspective view of one portion of the plug insert assembly, illustrating the contact retention fingers
  • FIG. 9 is a fragmentary transverse sectional view taken along line 9-9 of FIG. 3;
  • FIG. 10 is an enlarged fragmentary view illustrating the details of the finger shape and its engagement with the contact
  • FIG. 11 is a fragmentary longitudinal sectional view showing the retention finger spaced from the contact shoulder when the contact is shifted forwardly;
  • FIG. 12 is a further enlarged fragmentary view illustrating the engagement between the retention finger and the contact shoulder, with the contact under rearward load
  • FIG. 13 is an enlarged fragmentary longitudinal sectional view of the forward portions of the inserts of the plug and receptacle, shown slightly separated and illustrating the sealing arrangement for the openings;
  • FIG. 14 is a fragmentary flat pattern of the inside of the coupling ring, showing one of the bayonet grooves;
  • FIG. 15 is an enlarged fragmentary sectional view, taken along line 15-15 of FIG. 3, illustrating the engagement of the spring tab on the snap ring and the forward end of the receptacle shell;
  • FIG. 16 is a fragmentary longitudinal sectional view of the connector incorporating one size of bayonet pin and spacer washer used in adjusting tolerances to assure proper engagement at the forward surfaces of the connector inserts;
  • FIG. 17 is a view similar to FIG. 16, but with different sizes of bayonet pin and spacer washer;
  • FIG. 18 is a fragmentary longitudinal sectional view of the plug showing the critical dimension between the edge of the bayonet groove and the forward face of the insert;
  • FIG. 19 is an enlarged fragmentary sectional view showing how the spacer washer controls the dimension between the edge of the bayonet groove and the insert face in different tolerance conditions;
  • FIG. 20 is a fragmentary transverse sectional view of a group of three different sized spacer washers, one of edge of the bayonet groove;
  • a multiple pin and socket connector that includes a plug 9 and a receptacle 10.
  • the general arrangement for retaining the contacts is the same in the plug and receptacle.
  • the pin contacts are in the plug and the socket contacts in the receptacle, although this may be reversed if desired.
  • the plug 9 includes aplugshell 11, which is a generally tubular metal member of circular cross section.
  • an insert assembly 12 that serves to retain and hold a plurality of pin contacts 13.
  • the insert assembly 12 includes disks 14 and 15 of asubstantially rigid plastic.
  • a suitable material for these members is a polyarylsulfone marked under the trademark Astrel" 360 plastic by Chemical Division, 3M Company, 3M Center, St. Paul, Minnesota.
  • the disks 14 and 15 are suitably bonded together at their mating radial faces.
  • a gasket disk 16 of a resilient elastomeric material such as silicone rubber.
  • the insert assembly 12 is retained in the plug shell 1 l by means of interengaging castellations on the insert assembly and the plug shell.
  • FIG. 21 is a fragmentary longitudinal sectional view of the receptacle illustrating the manner of measuring to obtain the dimension from the opening for the bayonet pin to the forward face of the insert;
  • FIG. 22 is a side elevational view of two bayonet pinshaving outer ends of different sizes
  • FIG. 23 is a fragmentary longitudinal sectional view of the receptacle. shell and bayonet pin showing how different sizes of bayonet pins may be used in different situations to in both cases position the rearward edge of the pin at the same location;
  • FIG. 24 is a fragmentary elevational view of the receptacle shell and bayonet pin of FIG. 23;
  • FIG. 25 is a perspective view of the contact insertion and removal tool
  • FIG. 26 is an enlarged fragmentary longitudinal sectional view showing the tool of FIG. 25 as it is introduced into a cavity in the insert for contact removal;
  • FIG. 27 is a view similar to FIG. 26, but with the tool pushed all the way into the cavity for freeing the contact retention fingers from the rearward contact shoulder;
  • FIG. 28 is a perspective view illustrating a modified form of the contact insertion tool
  • FIG. 29 is an enlarged fragmentary longitudinal sectional view illustrating the operation of the insertion tool of FIG. 28.
  • FIG. 30 is a transverse sectional view taken on line 30-30 of FIG. 29;
  • the circumferential surface 20 from which the lugs 18 project is substantially complementary to the inner surface. 21 of the plug shell 11'.
  • the slots 22 are made sufficiently wide to permit the insert assembly 12 to be introduced into the plug shell 11 by being slid inwardly from the forward end 23 of the plug shell, with the lugs 18 passing through the slots 22.
  • the insert assembly 12 is moved into the plug shell until the rearward radial edges 25 of the lugs 18 are brought into engagement with an annular shoulder 26 at the rearward portion of the plug shell.
  • Circumferential slots 27 are formed at the rearward portion of the inner surface 21 of the plug shell 11, and are of widths substantially equal to the widthsof the lugs 18. This provides circumferentially extending shoulders 28 spaced opposite from the annular shoulders 26 of the plug shell. The shoulders 26 and 28 are spaced apart a distance corresponding to the dimensions of the lugs 18 longitudinally of the insert assembly 12. This allows the insert assembly 12 to be rotated after the rearward edges 25 of the lugs 18 have been brought into engagement with the annular shoulder 26. The rotation of the insert assembly brings the lugs 18 in back of the circumferential shoulders 28 and into the circumferential slots 27. This positions the forward edges 29 of the lugs adjacent the circumferential shoulders 28 so that the radial shoulders 26 and28 of the plug shell 11 hold the insert assembly 12 against longitudinal movement relative to the plug shell.
  • One of the lugs 18 may include a'longitudinally forwardly projecting portion 31 having a side edge 32 which is brought into engagement withthe side edge 33 of one of the longitudinal slots 22 in the plug shell for thereby limiting the rotational movement of the insert assembly 12 (see FIGS. 4 and 7).
  • the forward projection When the forward projection is provided, it assures that the insert assembly l2 assumes the proper rotational alignment relative to the plug shell. After being properly positioned in the plug shell 11, the insert assembly is locked in place so as to prevent it from being given reverse rotation. This may be accomplished by bonding the insert assembly to the plug shell.
  • a rearward sealing element 35 made of a resilient elastomer, such as silicone rubber, is bonded to the rearward radial face of the insert assembly and to the rearward portions of the inner circumferential wall 21 of the plug shell.
  • the pin contacts 13 are received in spaced parallel openings 38 formed in the insert assembly 12.
  • the openings 38 are continuous from the front to the rear of the insert assembly 12, and are separated from each other so that there is no communication from one opening 38 to the other.
  • the connector is designed so that a large number of the pin contacts 13 may be retained in close adjacency, but, for clarity of illustration, only a relatively few such contacts are shown in the drawing.
  • Each opening 38 includes a relatively wide-diameter portion 39 at the rearward end of the plastic disk which, through a frustoconical portion 40, tapers forwardly to a portion 41 of smaller diameter.
  • a plurality of fingers 42 extends radially inwardly and axially forwardlyfrom the portion 41 of the opening 38'into the continuation 43 of the opening 38 in the member 15. This positions the fingers 42 inwardly and radially opposite the circumferential wall of the portion 43 of the opening 38.
  • the fingers 42 are shorter than the section 43 of the opening, so that their forward ends are inward of the forward radial face 44 of the member 15. There are four of the fingers 42 in the example shown, as illustrated in FIG. 8.
  • the fingers 42 are rounded transversely so that collectively they define a generally frustoconical shape with narrow spaces between adjacent fingers. While the plastic member 15 is relatively hard and rigid, the fingers 42 are thin and, therefore, resilient. A radial shoulder is formed by the rearward face 45 of the member 14 where the diameter of the opening decreases at portion 46. In the gasket member 16, the opening has a relatively wide-diameter portion 47 at the rearward end and a smaller-diameter portion 48 at the forward end.
  • An opening 49 in the rearward sealing member 35 communicates with each of the openings 38.
  • the pin contacts 13 may be of conventional construction, including hollow, longitudinally elongated barrel portions 50 at their rearward ends, which receive the ends of wires 51 from which the insulation has been stripped.
  • the contact barrels 50 are crimped to the wires 51 to form a mechanical and electrical connection.
  • the wires 51 enter the openings 38 through the openings 49 in the rearward member 35, being engaged by annular sealing beads 52 formed on the circumference of the opening 49.
  • each contact 13 Forwardly of the barrel portion 50, each contact 13 includes a part 53 of enlarged diameter which defines forward and rearward shoulders 54 and 55, respectively. Beyond the forward shoulder 54, the contact narrows to a projecting pin portion 56 that is adapted to enter the socket contact.
  • the forward shoulder 54 of the contact When installed in the opening 38, the forward shoulder 54 of the contact is adjacent the rearwardly facing shoulder defined by the rearward ventional connector construction. This simplifies the manufacture of the connector and lowers its cost. The danger of an improperly installed retainer clip is obviated. With the fingers 42 being entirely received in the section 43 of the opening 38, which locates them rearwardly of the forward face 44 of the disk 15, thebonding together of the inserts 14 and 15 will not adversely affect the fingers. In other words, the fingers are remote from the bond line so that any excess bonding material squeezed out at the joint will not interfere with the movement of the fingers.
  • each finger 42 is thicker in cross section at their forward ends than they are at their points of attachment to the insert 15, being tapered gradually in thickness to the rear.
  • each finger has a substantially radial forward end surface 57 which connects at a right angle to an inner end surface 58, which is a cylindrical segment generally complementary to the barrel 50 of the contact 13.
  • the radial end surface 57 fits behind the rearward shoulder 55 of the contact, while the inner end surface 58 of the finger rests upon the barrel 50 adjacent the shoulder
  • the rearward transverse shoulder 55 of the contact 13 does not fall within a radial plane. Instead, it is inclined toward the forward end of the contact.
  • the shoulder 55 is undercut, being defined by a frustum of a cone. Desirable results are achieved when the shoulder 55 is inclined at around 12 relative to a radial plane.
  • the undercut shoulder configuration and the inner finger surfaces 58 contribute greatly to the amount of force which can be absorbed before the retention fingers 42 will fail.
  • the fingers 42 With the arrangement of this invention, the fingers 42, loaded as columns, receive the forces on them near the neutral centers of the columns, minimizing the tendency to buckle.
  • the plastic of the fingers 42 being softer than the metal of the contact 13, becomes distorted where it engages the radially outer portion of the shoulder 55, as illustrated in particular in the enlarged view of FIG; 12. This has the effect of embedding the shoulder in the outer ends of the plastic fingers 42, stabilizing the finger ends. This increases the column strength of the fingers 42 because a column can withstand more loading if its ends are stabilized.
  • the greater wall thickness of the fingers at their outer ends adds to their strength in shear and in bend- I ing.
  • the bending strength resists the buckling of the fingers under load. 7
  • the insert assembly 61 for the receptacle includes a plastic disk 62 that is similar to the member 15. To it is bonded or otherwise suitably secured a forward cover disk 63.
  • the members 62 and 63 also may be made of Astrel 360 plastic.
  • Outwardly projecting lugs 64 on the disk 62 correspond to the lugs 18 on the member 15.
  • the lugs 64 secure the insert assembly 61 to the receptacle shell 65 in the same way that the lugs 18 attach the insert assembly 12 in the plug shell 11.
  • the insert assembly 61 is introduced into the receptacle shell 65 by passing the lugs 64 through axial grooves in the inner surface of the receptacle shell 65, whereupon subsequent rotation of the insert assembly 61 places the lugs 64 between opposed forward and rearward shoulders 66 and 67, respectively, in the receptacle shell. This holds the disk 62 and thecover element 63 within the receptacle.
  • the socket contacts 68 are retained in continuous separate openings 69 in the insert assembly of the receptacle, positioned against axial rearward movement by integral fingers 70 that project forwardly and inwardly from the insert disk 62.
  • a shoulder 71 on the insert member 63, where the opening 69 reduces in width, is adjacent the forward end of the contact 68 and precludes forward movement of the contact.
  • the fingers 70 are engageable with the rearward edge of the annular enlargement 72 on the socket contact.
  • a wire 73 extends inwardly through an opening 74 in the rearward sealing member 75 of the receptacle 10 for each of the socket contacts 68.
  • the end portions of the wires 73 are stripped of insulation and connected by crimping to the rearward barrel ends 76 of the socket contacts 68.
  • a rounded annular bead 78 projects outwardly from the forward radial face 79 of the cover disk 63 of the receptacle insert around each of the openings 69.
  • the mechanism for securing the plug and receptacle together in the mated position includes a coupling ring 81 that circumscribes the plug shell 11.
  • the rearward end of the coupling ring includes a radially inwardly extending flange 82 in back of a rearwardly facing shoulder 83 on the plug shell.
  • a snap ring 84 fits in an annular recess 85 in the intermediate portion of the inner circumferential wall of the coupling ring 81.
  • the snap ring 84 is positioned in front of a forwardly facing radial shoulder 86 on the plug shell 11, cooperating with the flange 82 in retaining the coupling ring 81 on the plug shell 11. This allows the coupling ring 81 to rotate relative to the plug shell 11, but relative axial movement is prevented.
  • coupling ring 81 is provided with three short, arcuate, longitudinally extending recesses 87 in its inner surface 88 (see FIGS. 2 and 5). These recesses are adapted to receive the outer rounded portion 89 of a leaf spring 90.
  • the latter member has normally straight legs 91 terminating in an inwardly bent end 92 which is received within a radial opening 93 in the periphery of the plug she'll; This holds the spring to the plug shell 11.
  • Adjacent the legs 91 of the spring 90 are flat chordal surfaces 94 which provide a clearance for permitting flexure of the spring 90.
  • the coupling ring 81 can be rotated relative to the plug shell 11, but there is adetent action tending to prevent relative rotation when the portion 89'of the spring 90 enters a recess 87.
  • This retaining force may e overcome by applying adequate torque to the coupling ring to cam the rounded spring portion 89 out of the recess 87, compressing the spring inwardly and allowing the spring portion 89 to slide along the circumferential surface 88 of the coupling ring intermediate the recesses 87.
  • each groove 95 includes a wide entrance opening 96 at the forward end 97 of the coupling ring, from which there extends an inclined portion 98 of the groove, leading to a circumferential inner part 99 of the groove.
  • the axis of the latter portion of the bayonet groove 95 falls entirely within a radial plane as there is no recess for the bayonet pin at the inner end 100 of the groove.
  • the receptacle shell 65 includes a forward portion 101 of enlarged diameter which provides a clearance around the insert assembly 61. At the end of the forward portion 101 of the receptacle shell are three radially outwardly projecting bayonet pins 102.
  • the forward end portion 103 of the plug shell 11 enters the forward portion 101 of the receptacle shell 65, fitting in the clearance space around the insert assembly 61 of the receptacle.
  • Keys 104 on the plug shell fit in keyways 105 in the receptacle shell, assuring the proper rotational alignment of the plug and receptacle.
  • the detent spring when in a recess 87 in the coupling ring, positions the coupling ring so that the entrances 96 of the bayonet grooves 95 are aligned with the bayonet pins 102.
  • a positive stop is provided in one of the bayonet grooves to prevent rotation of the coupling ring 81 past the detent position when the connector is mated. This is accomplished by bending inwardly a small section 106 of the circumferential wall of the coupling ring, presenting an abutment surface 107 in the bayonet groove where it can be contacted by the bayonet pin at the termination of the rotation of the coupling ring 81 (see FIG. 6). This location corresponds to the positioning of the outer portion 89 of the detent spring 90 in a detent receptacle 87
  • An opening 108 is formed in the wall of the coupling ring adjacent the stop 107, while two additional openings 109 in the coupling ring are spaced 120 from the opening 108.
  • the plug and receptacle are advanced axially toward each other the maximum distance when the bayonet pins are adjacent the ends 100 of the grooves 95 that receive them. No outward movement occurs as the connection is made, and, when the bayonet pins 102 reach the circumferential portions 99 of the grooves 95, the parts are held in their position of full maximum engagement. Even though subjected to a separating force, no relative movement of the plug and receptacle can take place, so that electrical continuity through the contacts is assured.
  • the bayonet pins 102 are held against the forward sides of the bayonet grooves 95 when separating forces are imposed, while the coupling ring 81 is prevented from movement axially by the engagement of the flange 82 with the rearwardly facing shoulder 83 of the plug shell 11. This provides a solid connection of the parts.
  • the snap ring 84 may be provided with forwardly projecting tabs 113. that are brought into engagement with the end of the forward portion 101 of the receptacle shell 65 when the connector is mated (see FIG. 15). This puts a desirable tension on the coupled plug and receptacle, eliminating any clearance in the coupling mechanism. This also makes an electrical connection between the plug shell 11 and the receptacle shell 65.
  • the plug and receptacle are disconnected by reverse rotation of the coupling ring 81 to free the bayonet pins 102 from the bayonet grooves 95. As this is accomreceptacle 11 are held together by the reaction of the rearward surfaces of the bayonet pins 102 against the forward edges of the bayonet grooves 95. This causes the forward faces of the inserts in the plug and receptacle to be brought into interengagement and held under compression.
  • the sealing bead 78 engages and becomes embedded in the forward face 80 of the resilient insert 16 around the mating pin and socket contacts. It is important that the bead 78 of the forward cover disk 63 and the forward face 80 of the insert 16 assume the proper relative position when the connector is mated.
  • tolerance control is effected by means of a spacer washer 115 which fits between the abutments defined by the rearward flange 82 of the coupling ring 81 and the shoulder 83 on the shell 11 (see FIGS. 1620).
  • a spacer washer 115 of proper axial dimension, the distance A (indicated in FIG. 18) between the forward edge 116 of the bayonet groove and the forward face 80 of the gasket insert 16 can be held within acceptable limits.
  • the distance A can be controlled adequately by having available only a limited number of sizes of the spacer washers 115. Three such washers, such as the washers a, 115b and 1150 shown in FIG. 20 will suffice.
  • the coupling ring 81 is positioned on the shell 1 1 with one thickness of washer, selected by estimation or arbitrarily, positioned between the flange 82 and the shoulder 83.
  • the distance A then is measured. Obviously, if the selected washer causes the distance A to fall within the proper range, nothing more need be done. However, if the distance A is over or under the specified range, the originally chosen washer is replaced by one of a thicknesssuch that the distance -A will be brought to within proper limits. Simple addition or subtraction will establish the choice of spacer washer. A thicker washer will move the forward edge 116 of the groove 95 closer to the surface 80, and a thinner washer will increase the distance between the forward edge 116 and the surface 80.
  • the distance C is measured from the rearward edge of the opening 1 18 in the receptacle shell 65 to the forward edge of the bead 78. With this distance being known, it is possible then to select the bayonet pin having its outer part 119a or 11% dimensioned so as to result in a distance B within accepted limits. Obviously, when the distance C is at a minimum, the bayonet pin with the smaller outer end 119a is selected, while larger distances C require the bayonet pin having end 11%.
  • the distance C may be found by first inserting a rod 120 through the opening.
  • the rod 120 is extended inwardly parallel to the forward face 79 of the insert 63.
  • a measurement can be made without difficulty between the rearward edge of the rod 120 and the forward edge of the sealing bead 78. This is the same dimension as that between the rearward edge of the opening 1 l8 and the bead 78, which is the distance C.
  • the contact may be both installed and removed from the rearward ends of the plug and receptacle.
  • stallation and removal of the contacts for such connectors ordinarily are accomplished by a tool that includes a split plastic tubular element which fits around the barrel of the contact and engages the rearward contact shoulder as the contact is installed and removed.
  • a tool that includes a split plastic tubular element which fits around the barrel of the contact and engages the rearward contact shoulder as the contact is installed and removed.
  • the tool may be constructed as shown in FIGS. 25, 26 and 27, where the end of the tool defines somewhat less than a complete circle and, therefore, is not difficult to fonn.
  • the contact insertion and removal tool 122 of FIG. 25 is made of a deflectable but generally rigid plastic material. It includes a central part 123 from which extend a portion 124 for contact removal and a portion 125 for contact insertion.
  • the forward portion 126 of the removal end 124 of the tool is arcuate in cross section, but defines less than a complete annulus by having a relatively wide longitudinal slot 127 extending from the outer end 128 of the tool.
  • a shallow beveled surface 129 adjacent the outer end of the tool reduces the transverse dimension and wall thickness at that location. Inwardly of the end 128, the exterior of the tool increases in diameter at a tapered shoulder 130 to a wider portion 131.
  • the forward portion 126 of the tool 122 has a lateral dimension which permits it to enter into the rearward portion 39 of the opening 38 where the contact 13 is held, as seen in FIG. 26.
  • the lateral dimension of the tool inwardly of the tapered shoulder 130 is greater than the diameter of the portion 39 of the opening.
  • the wall thickness of the removal portion 124 of the tool at its forward portion 126 is sufficient to deflect the fingers 42 outwardly a distance that will cause them to clear the rearward shoulder 55 of the contact 13.
  • the bevel 129 serves the additional purpose of reducing the tool thickness, so that the fingers will not be bent too far outwardly to cause interference with the wall 43. With the fingers 42 spread apart, the wire 51 and tool 122 are gripped and pulled outwardly, removing the contact 13 from the opening 38.
  • the tool may be formed to a relatively large lateral dimension and given a wide slot because the wall of the opening in the insert compresses the tool laterally to give it the proper dimension at the forward portion of the opening where the fingers are to be deflected.
  • the insertion tool portion is generally similar to the removal tool section 124, having a forward arcuate portion 132 provided with a relatively wide slot 133.
  • the insertion tool 125 is fitted around the barrel 50 of thecontaet 13 so that its end 134 engages the rearward shoulder 55 of the contact.
  • the tool is moved into the opening 38 with the contact 13, becoming compressed so that the forward end of the tool enters the smaller-diameter portion 41 of the opening 38 and the width of the slot 133 is diminished.
  • the forward shoulder 54 of the contact cams the resilient fingers 42 outwardly as the contact enters the forward portion of the opening 38, allowing the fingers to slide over the enlarged portion 53 of the contact and the rearward shoulder 55 to move past the finger ends 57. Then, the insertion tool 125 is pulled outwardly, leaving the contact 13 in its place within the insert of the connector.
  • the tool 136 shown in FIG. 28 solves this problem, allowing the wall thickness of the tool to be adequate for contact insertion, at the same time making certain that in all instances the contact will be held in the connector when the insertion tool is removed.
  • the tool 136 of FIG. 28 uses the same removal portion 124 as in the embodiment of FIG. 25.
  • the contact installation portion 137 differs from the prior embodiment primarily by being recessed circumferentially along the opposed edges 138 and 139 of the longitudinal slot at the outer end of the tool. This leaves an'end part 140 defined by a cylindrical segment that is less than a semicylinder. inwardly of the end part 140, the tool portion 137 resembles that of the installation tool portion 125 described above.
  • the radial end surface 141 of the tool portion 137 engages the rearward shoulder 55. Because of the large circumferential recess at the end of the tool, only part of the shoulder 55 is engaged by the end surface 141 of the tool, but there is adequate engagement to permitthe tool to insert the contact. Also, as a result of the reduced lateral dimension of the end part 140, less than all four retention fingers 42 will be engaged by the end part 140 when the contact has been pushed to its final position (see FIGS. 29 and 30). The finger or fingers not engaged. by the'end portion 140 of the tool 137 are free to snap inwardly behind the shoulder 55 to hold the contact in place.
  • the wall thickness of the section 140 may be such that the retention fingers 42 it engages are pried outwardly so that they clear the shoulder 55. This does not matter, however, because the fingers 42 that already engage the contact shoulder 55 where the end part is cut away hold the contact in the opening as the tool is removed. In assuring that at least one finger 42 will be cleared by the tool and able to engage the contact shoulder 55, no matter what the relative rotational positions-of the fingers and the tool, the end portion may extend through an arc of around when there are four closely spaced retention fingers as in the example shown.
  • An electrical connector device comprising:
  • a body of dielectric material having a forward end and a rearward end, said body having a plurality of spaced continuous openings therein extending through said body between said forward end and said rearward end, each of said openings having a circumferential wall, and an electrical contact in each of said openings,
  • each of said contacts having a first abutment adjacent said forward end and a second abutment adjacent said rearward end
  • saidbody having a first abutment in each of said openings adjacent said first abutment of the contact therein for limiting the movement of said contact toward said forward end
  • said body having integral resilient finger means in each of said openings inclined inwardly and forwardly from said circumferential wall, said finger means having forward end portions spaced inwardly from and radially opposed to said circumferential wall, and adjacent and engageable with said second abutment of said contact for limiting movement of said contact toward said rearward end, said body being in at least two pieces
  • said pieces having mating faces transversely of and extending between said openings, said pieces being held in interengagement along said mating faces, said'finger means being positioned rearwardly of said mating faces.
  • a device as recited in claim 1 in which said pieces are bonded together at said mating faces, and said finger means are integrally attached to said body at a location rearwardly of said mating faces.
  • An electrical connector device comprising:
  • a body of dielectric material having a forward end and a rearward end, said body having a plurality of spaced continuous openings therein extending through said body between said forward end and said rearward end, each of said openings having a circumferential wall, I and an electrical contact in each of said openings,
  • said body having integral resilient finger means in each of said openings inclined inwardly and forwardly from said circumferential wall,
  • said finger means having forward end portions spaced inwardly from and radially opposed to said circumferential wall, and adjacent and engageable with said second abutment of said contact for limiting movement of said contact toward said rearward end,
  • each of said openings including a relatively large-diameter rearward portion, and a relatively small-diameter portion forwardly of said relatively large-diameter portion,
  • said finger means projecting from a location forwardly of said relatively small-diameter portion.
  • each of said openings includes a frustoconical portion intermediate said relatively large-diameter portion and said relatively small-diameter portion for thereby providing a tapering surface between said portions.
  • An electricalconnector device comprising:
  • said body having a plurality of spaced openings therein extending through said body between said forward end and said rearward end,
  • said body having a first abutment in each of said openings adjacent said first abutment of the contact therein for limiting the movement of said contact toward said forward end
  • said body having integral resilient finger means inclined inwardly and forwardly with respect to said openings,
  • An electrical connector device comprising: a body of dielectric material having a forward end and a rearward end, said body having a plurality of spaced openings therein extending through said body between said forward end and said rearward end, and an electrical contact in each of said openings,
  • said body having a first abutment in each of said openings adjacent said first abutment of the contact therein for limiting the movement of said contact toward said forward end, said body having integral resilient finger means,
  • said finger means including a plurality of in- 6 dividual fingers inclined inwardly and forwardly with respect to said openings,
  • each of said fingers having a forward end portion a first part of which is adjacent and engageable with said second abutment of said contact for limiting movement of said contact toward said rearward end, and a longitudinally extending second part of which engages said longitudinally directed surface for imparting stability to said finger.
  • said longitudinally directed surface is substantially cylindrical
  • each of said fingers is thicker at said forward end portion than it is rearwardly of said forward end portion.
  • each of said fingers tapers in thickness rearwardly from said forward end portion.
  • An electrical connector device comprising:
  • a body of dielectric material having a forward end and a rearward end, said body having a plurality of spaced continuous openings therein extending through said body between said forward end and said rearward end, each of said openings having a circumferential wall having a first portion of a first diameter, a second portion of a second and smaller diameter and a substantially radial shoulder interconnecting said first and second portions, and an electrical contact in each of said openings,
  • each of said contacts having a forwardly facing shoulder adjacent and opposed to said substantially radial shoulder of the opening in which it is received, whereby said contacts are prevented from substantial movement forwardly relative to said body, each of said contacts having a rearwardly facing shoulder, said body having integral resilient finger means in each of said openings inclined inwardly and forwardly within said first portions of said circumsaid openings intermediate the ends of said openings,

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US00167317A 1970-10-26 1971-07-29 Electrical connector Expired - Lifetime US3727172A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US8378270A 1970-10-26 1970-10-26
US16731771A 1971-07-29 1971-07-29

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US3727172A true US3727172A (en) 1973-04-10

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ID=26769737

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US00167317A Expired - Lifetime US3727172A (en) 1970-10-26 1971-07-29 Electrical connector

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US (1) US3727172A (enrdf_load_stackoverflow)
FR (1) FR2147289B2 (enrdf_load_stackoverflow)
GB (1) GB1403989A (enrdf_load_stackoverflow)

Cited By (21)

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US3880487A (en) * 1973-07-20 1975-04-29 Itt Low cost sealed connector
US3938874A (en) * 1974-01-16 1976-02-17 The Bendix Corporation Electrical connector contact retention system
US3993394A (en) * 1974-07-31 1976-11-23 Raychem Corporation Connector half having connector wafer retained therein
US4019799A (en) * 1976-02-11 1977-04-26 The Bendix Corporation Electrical connector
US4090764A (en) * 1973-12-19 1978-05-23 The Deutsch Company Electronic Components Division Modular electrical connector
US4116521A (en) * 1976-10-12 1978-09-26 Amp Incorporated Miniature universal connector module
US4187272A (en) * 1976-10-01 1980-02-05 The Bendix Corporation Method of making molded electrical connector insert
US4293180A (en) * 1978-05-31 1981-10-06 Bunker Ramo Corporation Resilient biasing means
US4358179A (en) * 1976-10-01 1982-11-09 The Bendix Corporation Molded electrical connector insert
US4421378A (en) * 1979-11-07 1983-12-20 The Bendix Corporation Electrical contact retention insert and means for molding same
US4527851A (en) * 1984-05-14 1985-07-09 Allied Corporation Electrical connector assembly having an interfacial seal
US4629269A (en) * 1977-10-25 1986-12-16 Allied Corporation Electrical connector with environmental seal
US4632505A (en) * 1983-10-11 1986-12-30 The Deustsch Company Electronic Components Division Optical fiber connector
US4639061A (en) * 1984-11-19 1987-01-27 Itt Corporation Environmentally sealed connector
US4684187A (en) * 1984-06-29 1987-08-04 Amp Incorporated Retention article for electrical contacts
US4740177A (en) * 1987-02-09 1988-04-26 Standex International Corporation Cluster assembly with locking tabs
US4749373A (en) * 1987-06-22 1988-06-07 Amp Incorporated Crimp snap retention system
US5591049A (en) * 1994-04-21 1997-01-07 Murata Manufacturing Co., Ltd. High voltage connector
US9039436B2 (en) 2013-01-02 2015-05-26 Staubli Faverges Electrical connector with automatic engagement
US9722041B2 (en) 2012-09-19 2017-08-01 Vishay-Siliconix Breakdown voltage blocking device
US10422427B2 (en) 2010-05-25 2019-09-24 Beele Engineering B.V. Assembly and a method for providing in an opening sealing system

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2240600B1 (enrdf_load_stackoverflow) * 1973-08-09 1979-06-22 Souriau & Cie
FR2447104A1 (fr) * 1979-01-22 1980-08-14 Souriau & Cie Perfectionnements aux dispositifs de retention pour connecteurs electriques a plusieurs elements de contact et auxdits connecteurs
US4461526A (en) * 1982-07-28 1984-07-24 The Bendix Corporation Anti-decoupling mechanism for an electrical connector
US4431243A (en) * 1982-07-28 1984-02-14 The Bendix Corporation Contact stop for an electrical connector

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FR90705E (fr) * 1963-06-27 1968-02-02 Int Standard Electric Corp Outil d'introduction et d'enlèvement pour borne de contact particulièrement pour connecteurs électriques
US3394339A (en) * 1965-10-07 1968-07-23 Gray & Huleguard Connector
US3440596A (en) * 1966-03-17 1969-04-22 Elco Corp Insulator feature with contact retention fingers
US3478305A (en) * 1966-09-26 1969-11-11 Bunker Ramo Electrical connector
US3631375A (en) * 1970-04-01 1971-12-28 Electronic Co Ltd Ab Electrical connectors
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US3068443A (en) * 1960-05-05 1962-12-11 Pyle National Co Multi-conductor connector
US3101229A (en) * 1960-10-07 1963-08-20 Amphenol Borg Electronics Corp Electrical connectors
US3221292A (en) * 1961-10-18 1965-11-30 Bendix Corp Electrical connector
US3165369A (en) * 1962-08-13 1965-01-12 Itt Retention system for electrical contacts
FR90705E (fr) * 1963-06-27 1968-02-02 Int Standard Electric Corp Outil d'introduction et d'enlèvement pour borne de contact particulièrement pour connecteurs électriques
US3336569A (en) * 1964-11-17 1967-08-15 Pyle National Co Electrical connector with contact sealing means
US3394339A (en) * 1965-10-07 1968-07-23 Gray & Huleguard Connector
US3440596A (en) * 1966-03-17 1969-04-22 Elco Corp Insulator feature with contact retention fingers
US3478305A (en) * 1966-09-26 1969-11-11 Bunker Ramo Electrical connector
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US3638165A (en) * 1970-06-29 1972-01-25 Itt Electrical connector contact retention assembly

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3880487A (en) * 1973-07-20 1975-04-29 Itt Low cost sealed connector
US4090764A (en) * 1973-12-19 1978-05-23 The Deutsch Company Electronic Components Division Modular electrical connector
US3938874A (en) * 1974-01-16 1976-02-17 The Bendix Corporation Electrical connector contact retention system
US3993394A (en) * 1974-07-31 1976-11-23 Raychem Corporation Connector half having connector wafer retained therein
US4019799A (en) * 1976-02-11 1977-04-26 The Bendix Corporation Electrical connector
US4099323A (en) * 1976-02-11 1978-07-11 The Bendix Corporation Method of making electrical connector
US4187272A (en) * 1976-10-01 1980-02-05 The Bendix Corporation Method of making molded electrical connector insert
US4358179A (en) * 1976-10-01 1982-11-09 The Bendix Corporation Molded electrical connector insert
US4116521A (en) * 1976-10-12 1978-09-26 Amp Incorporated Miniature universal connector module
US4629269A (en) * 1977-10-25 1986-12-16 Allied Corporation Electrical connector with environmental seal
US4293180A (en) * 1978-05-31 1981-10-06 Bunker Ramo Corporation Resilient biasing means
US4421378A (en) * 1979-11-07 1983-12-20 The Bendix Corporation Electrical contact retention insert and means for molding same
US4632505A (en) * 1983-10-11 1986-12-30 The Deustsch Company Electronic Components Division Optical fiber connector
US4527851A (en) * 1984-05-14 1985-07-09 Allied Corporation Electrical connector assembly having an interfacial seal
US4684187A (en) * 1984-06-29 1987-08-04 Amp Incorporated Retention article for electrical contacts
US4639061A (en) * 1984-11-19 1987-01-27 Itt Corporation Environmentally sealed connector
US4740177A (en) * 1987-02-09 1988-04-26 Standex International Corporation Cluster assembly with locking tabs
US4749373A (en) * 1987-06-22 1988-06-07 Amp Incorporated Crimp snap retention system
US5591049A (en) * 1994-04-21 1997-01-07 Murata Manufacturing Co., Ltd. High voltage connector
US10422427B2 (en) 2010-05-25 2019-09-24 Beele Engineering B.V. Assembly and a method for providing in an opening sealing system
US9722041B2 (en) 2012-09-19 2017-08-01 Vishay-Siliconix Breakdown voltage blocking device
US9039436B2 (en) 2013-01-02 2015-05-26 Staubli Faverges Electrical connector with automatic engagement

Also Published As

Publication number Publication date
FR2147289B2 (enrdf_load_stackoverflow) 1975-09-05
FR2147289A2 (enrdf_load_stackoverflow) 1973-03-09
GB1403989A (en) 1975-08-28

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