EP0416623A1 - Boîtier de connecteur À©lectrique - Google Patents

Boîtier de connecteur À©lectrique Download PDF

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Publication number
EP0416623A1
EP0416623A1 EP90117195A EP90117195A EP0416623A1 EP 0416623 A1 EP0416623 A1 EP 0416623A1 EP 90117195 A EP90117195 A EP 90117195A EP 90117195 A EP90117195 A EP 90117195A EP 0416623 A1 EP0416623 A1 EP 0416623A1
Authority
EP
European Patent Office
Prior art keywords
terminal
housing
terminal retainer
cavities
latching
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP90117195A
Other languages
German (de)
English (en)
Other versions
EP0416623B1 (fr
Inventor
Jürgen Hass
Gheorghe Hotea
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Whitaker LLC
Original Assignee
AMP Inc
Whitaker LLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by AMP Inc, Whitaker LLC filed Critical AMP Inc
Publication of EP0416623A1 publication Critical patent/EP0416623A1/fr
Application granted granted Critical
Publication of EP0416623B1 publication Critical patent/EP0416623B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01R13/436—Securing a plurality of contact members by one locking piece or operation
    • H01R13/4364—Insertion of locking piece from the front
    • H01R13/4365—Insertion of locking piece from the front comprising a temporary and a final locking position

Definitions

  • This invention relates to an electrical connector insulating housing provided with means for locking electrical terminals in the housing.
  • an electrical connector insulating housing defining a series of spaced, elongate, terminal receiving cavities surrounding an axis of the housing and extending lengthwise of said axis, the housing receiving a terminal retainer for angular displacement about said axis between a first angular position to allow electrical terminals to be inserted into the cavities and a second angular position to overlie abutments on the terminals when they have been inserted into the cavities to lock the terminals therein.
  • the terminal retainer is received in a hood projecting from the housing, and is in the form of a circular cross-section block which presents a terminal receiving face of the housing. Since the terminal retainer must be angularly displaceable in the hood and cannot, therefore, be sealed thereto effectively, it is impracticable to seal the connector against the ingress of moisture by means of sealing grommets in the cavities.
  • a housing as defined in the second paragraph of this specification is characterized in that the cavities are arranged in a single ring about said axis and the terminal retainer, which is annular, is mounted for said angular displacement on a spigot which projects as a cantilever within said ring of cavities from a housing wall extending transversely of the cavities; and in that the terminal retainer has radially outwardly directed terminal retaining members which intersect the cavities in the second angular position of the terminal retainer to overlie said abutments.
  • the outer periphery of the housing is free to receive a sealing ring for the provision of keying or securing means thereon.
  • the said transverse wall may be positioned substantially longitudinally centrally of the cavities.
  • the terminal retainer is insertable into an annular recess defined by the housing, between the spigot and radially inner walls of the cavities, with the aid of guide means provided on the terminal retainer and cooperating with complementary guide means on the spigot or between the cavities, to locate the terminal retainer, in its first angular position, the terminal retainer having latching means cooperating with shoulders presented by said inner walls to latch the terminal retainer in its recess.
  • the spigot has at least one latch arm formed with first and second external, circumferentially spaced latching notches and the terminal retainer has at least one inwardly directed latching spur for latching engagement with the first notch in the first position of the terminal retainer and in the second notch in the second position thereof.
  • the resilience of the latch arm ensures that as the terminal retainer is rotated between its first and second angular positions, the latch arm is resiliently depressed, to allow the latching spur to pass from the first to the second notch with a snap action.
  • the spigot may, according to this embodiment, be formed with a longitudinally indented keying surface proximate to said transverse wall and extending in the direction of the free end of ths pigot, the terminal retainer having a radially inwardly projecting resilient keying pad shaped complementarily with said keying surface.
  • keying means ensure that the terminal retainer is insertable into its recess, only in the first angular position of the terminal retainer, the resilience of the keying pad, nevertheless allowing the terminal retainer to be shifted from its first to its second angular position against the resilient action of the keying pad.
  • Resilience may be imparted to the keying pad, which extends longitudinally of the terminal retainer, by forming it with an internal opening substantially throughout its length.
  • the spigot may comprise an annular wall concentric with the axis of the housing and which extends from the transverse wall mentioned above, towards a mating face of the housing, a solid part exending from the annular wall towards the mating face, and, extending from the solid part up to the mating face, a longitudinally divided part providing said latch arm or latch the spigot and upon radially the outer surface of said annular wall.
  • the spigot is formed as a simple tube of constant circular cross-section, the terminal retainer, having a circular cross-section bore for receiving the spigot, and having a pair of diametrically opposed latching spurs projecting radially outwardly thereof.
  • the housing is formed, between the cavities which according to this embodiment, are few, being, for example, only four in number, with first and second circumferentially spaced latching notches each for receiving a latching tip of a respective latching spur in the first and second angular positions, respectively, of the terminal retainer.
  • the terminal retainer In order to ensure that the terminal retainer can be mated with the spigot only in its first angular position, it may be provided with guide ribs extending longitudinally thereof and cooperating with guide surfaces between the cavities, to that end.
  • the terminal retaining members are, according to the second embodiment, positioned proximate to the leading end of the terminal retainer.
  • the guide ribs which are of substantially equal height to the terminal retaining members, but which are of considerably smaller width circumferentially, extend from the terminal retainer members towards the latching spurs.
  • the latching notches extend radially outwardly from wells formed in the housing, between the cavities thereof, and opening into a mating face of the housing by way of which the terminal retainer is accessible so as to be movable between its first and second angular positions, for example by means of a tool blade inserted into a slot in the terminal retainer.
  • Each well communicates in the circumferential direction of the housing, with a respective terminal receiving cavity and according to the second embodiment, is provided with arcuate side walls for cooperation with complementarily shaped surfaces for the guide ribs.
  • An electrical connector housing 2 of circular cross-­section, comprises for assembly thereto, a terminal retainer 4, ( Figures 5 to 9) and a coupling ring 6 (shown in Figures 10 and 11) for securing the housing 2 to a mating electrical connector housing (not shown).
  • the housing 2 defines a single ring of seven spaced, terminal receiving, circular cross-section through cavities 8, concentric with the longitudinal axis X-X ( Figures 1 and 11) of the housing 2, each cavity 8 opening into a terminal, receiving rear face 10 of the housing 2 and into a mating, front face 12 thereof. Between the cavities 8, blind holes 14 were formed in the faces 10 and 12 during the molding of the housing 2, from a suitable insulating material, to provide relief for warpage of the material as it cooled after the molding operation.
  • the housing 2 defines an annular recess 16 concentric with the axis X-X and with the ring of cavities 8, for receiving the terminal retainer 4.
  • the recess 16 opens forwardly into the mating face 12 and communicates rearwardly with annular opening 18 which in turn communicates with each of the cavities 8.
  • Each cavity 8 is shaped and dimensioned to receive an electrical terminal 28 ( Figures 11 and 11A).
  • Each terminal 28 comprises a crimping ferrule 24 crimped to an insulated lead L and to a sealing grommet 26, a mounting portion 32, a circular abutment flange 44 between the ferrule 24 and the portion 32, and a mating portion 34 in the form of an electrical socket having a longitudinally extending latching tongue 40 struck out therefrom.
  • Each cavity 8 has a large cross section part 22 for receiving the ferrule 24 and grommet 26, a smaller cross section part 30 for receiving the mounting portion 32, intermediate the cavity part 22 and a larger cross section part 36 for receiving the mating portion 34 of the terminal 28.
  • each cavity 8 There is defined between the parts 22 and 30 of each cavity 8, an annular shoulder 42 for abutment by the flange 44 of the terminal 28, and between the parts 30 and 36 an annular shoulder 38 for engagement by the free, rearward end of the latching tongue 40 of the terminal 28.
  • the radially inner wall 20 of the parts 30 and 36 of each cavity 8 defines an annular latching shoulder 21, projecting slightly into the recess 16.
  • the radially inner wall 20′ of the part 22 defining star shaped cavity 23.
  • a hood 46 formed with external keyways 48 each dimensioned to receive a respective key (not shown) in a hood of the said mating housing.
  • the keyways 48 also extend inwardly, over part of an outer peripheral wall 50 of the housing 2.
  • the keyways 48 will differ in configuration and arrangement from one housing 2 to another, as illustrated by way of example by the keyways 48′ in Figure 10.
  • a latching ring 54 there projects from the terminal receiving face 10 of the housing 2 a skirt 52 and there extends radially outwardly from the wall 50, a latching ring 54, defining in cooperation therewith an annular socket 56 having a forward reduced cross section part 58 for receiving, as shown in Figure 11, a sealing ring 60, the part 58 communicating with a frusto-conical rear annular recess 62 into which the ring 60 is extruded when the housing 2 has been mated with said mating housing.
  • the latching ring 54 is formed with resilient latch arms 64 distributed about its external periphery and having free ends which are rearwardly directed.
  • each pair of adjacent arms 64 is an axial rib 66, the ring 54 being formed rearwardly of the free ends of the arms 64, with a peripheral groove 68.
  • the coupling ring 6 has radially inwardly projecting studs 70 ( Figure 10) for meshing with a screw thread of said mating housing.
  • the former is provided with finger grips 72 ( Figure 11) and with angular position indicators 74 for coincidence with complementary indicators on said mating housing to indicate when housings have been correctly secured together by means of the coupling ring 6.
  • a substantially circular overall cross section spigot 78 (best seen in Figures 1 to 3 and 9) providing a pivot for the terminal retainer 4 when mated with the spigot 78, projects forwardly into the recess 16 from an annular wall 80 projecting radially inwardly from the walls 20′ and being positioned generally centrally of the length of the cavities 8.
  • the spigot 78 comprises an annular rear wall portion 82 concentric with the axis X-X and defining a space 84 rearwardly of a body portion 86 of the spigot 78, the portion 86 extending forwardly from the wall 82 and comprising a solid rear part 88 and a longitudinally divided forward part 90 formed with two spaced longitudinal slots 92 running from the free forward end 94 of the body portion 86.
  • the part 88 and the wall 82 are formed radially outwardly thereof and upon one side, with an undulating, (as best seen in cross section Figure 9), keying surface 96 defining a pair of spaced, arcuately concave troughs 98 extending longitudinally of the spigot 78 and being separated by a convexly arcuate cusp 99.
  • the slots 92 in the forward part 90 cooperate to define a central column 100, which terminates in a flat surface 102 at said forward end 94.
  • the column 100 has parallel flat sides 104 and arcuately convex end walls 106 and 107, the latter terminating at the end 94 in a chamfered guide surface 110 and the former being aligned with the cusp 99.
  • the slots 92 serve to define, opposite to each side 104, a resilient latch arm 109. Each arm 109 is formed with a pair of radially spaced, longitudinal latching notches 108 and 108′ respectively.
  • the terminal retainer 4 which is in the form of an open ended tube of substantially circular cross section, is formed proximate to its leading end 112, (that is to say its end which leads when the retainer 4 is mated with the spigot 78), with a ring of seven terminal locking members in the form of studs 114, spaced constantly about its outer periphery with the same spacing as that between the cavities 8.
  • the studs 114 taper in height in a clockwise (as seen in Figure 6) sense.
  • Outer periphery of the retainer 4 is also formed with a latching rib 116 extending continuously thereabout and tapering in height in the direction of the leading end 112.
  • a keying pad 122 which is resilient by virtue of an opening 124 therein which, as shown in Figure 8, extends substantially throughout its length, projects internally of the retainer 4, and has a wall 126 facing inwardly thereof and being provided with a pair of spaced longitudinal ribs 128 each for engaging in a respective trough 98 of the part 88 in the wall 82 of the spigot 78.
  • the pad 122 is positioned somewhat nearer to the end 122 than to the end 118 and is located angularly, midway between the two spurs 120.
  • the retainer 4 is formed with diametrically opposed slots 130 for receiving a tool blade (not shown) for rotating the terminal retainer 4 when it has been mated with the spigot 78, between terminal receiving, and terminal locking positions, as described below.
  • the terminal retainer 4 is assembled to the housing 2, that is to say it is mated with the spigot 78, by inserting the retainer 4 into the recess 16 from the mating face 12 of the housing 2 with the end 112 of the retainer 4 leading and the keying pad 122 aligned with the keying surface 96 of the spigot 78.
  • the ribs 128 of the pad 122 engage in (as indicated in broken lines in Figure 9) and pass along, the slots 92 of the spigot 78, until they engage in the troughs 98.
  • each spur 120 thereof engages the latching notch 108 of a respective latch arm 109.
  • the terminal retainer 4 is then a terminal receiving angular position as shown in Figure 10 and as shown in full lines in Figure 12 and is held in that position by virtue of the resilient engagement of the ribs 128 of the pad 122 in the troughs 98 of the spigot 78.
  • the retainer 4 cannot be assembled to the housing 2 with the spurs 120 in the notches 108′.
  • terminal locking studs 114 lie between the cavities 8 and so do not obstruct them, a terminal 28 can now be inserted into each cavity 8 from the terminal receiving face 10.
  • the terminals 28 are latched in their cavities by cooperation between their latching tongues 40 and the shoulders 38 in the cavities 8.
  • the terminals 28 could still back out from their cavities under the action of vibration, if the leads L are pulled, when the housing is in use, as the struck out tongues 40 will not normally be robust enough to prevent such terminal backout, since the metal stock from which the terminals were formed will usually be very thin.
  • the tool blade is inserted into the slots 130 of the trailing end 118 of the retainer 4, which are accessible from the mating face 12, and the blade is rotated angularly to shift the terminal retainer 4 a few degrees in a clockwise (as seen in Figure 10) sense, against the resilient action of the pad 122, to cause each spur 120 of the retainer 4 to snap into locking engagement with the adjacent notch 108′ of the spigot 78, so that as shown in Figure 12 in broken lines, and as shown in Figure 11, each locking stud 114 of the retainer 4 is moved into the respective cavity 8 so as to overlie the abutment flange 44 of the terminal 28 therein so that the terminal can under no circumstances back out therefrom.
  • An electrical connector housing 140 of substantially circular overall cross section comprises for assembly thereto a terminal retainer 142, and a coupling ring 6a.
  • the housing 140 defines a single ring of four spaced terminal receiving cavities 8a each opening into the terminal receiving rear face 10a of the housing 140 and into the mating front face 12a thereof.
  • the cavities 8a are of the same configuration as the cavities 8, being dimensioned to receive the terminals 28 described above.
  • a wall 144 extending between the walls 20 a of the cavities 8a at right angles thereto and being positioned generally centrally their length, provides, as best seen in Figures 13 and 16, a base for a circular constant cross-section, tubular spigot 146 which projects forwardly from the wall 144 up to the mating face 12a of the housing 140 and has a free end 148 substantially flush with the face 12a as shown in Figure 16.
  • the spigot 146 cooperates with the body 153 of the housing 140 to define the annular recess 152 to allow the terminal retainer 142 to be mated with the spigot 146 so that the latter acts as a pivot for the retainer 142 as described below.
  • the recess 152 opens radially outwardly, into four wells 156 which are constantly spaced about the axis X-X of the housing 140 and are defined by the body 153, each well 156 opening into the mating face 12a and being disposed between the cavities 8a of an adjacent pair of those cavities.
  • the wells 156 also communicate with openings 154 in the body 153, each of Which in turn communicates with the interior of the part 22a of a respective cavity 8a.
  • Each opening 154 extends, in the longitudinal direction of the cavities 8a, from the shoulder 42a in the respective cavity portion 22a, to a position spaced forwardly from wall 144 by a short length 159 of the recess 152.
  • the wells 156 have smoothly inwardly convex sidewalls 157, as best seen in Figure 14.
  • the radially outer end of each well 156 opens into a pair of circumferentially spaced latching notches 158 and 158′ (best seen in Figures 14 and 23) at the forward end of the spigot 146 and which open into the mating face 12a.
  • the notches 158 and 158a of each pair are located midway between two adjacent ones of the cavities 8a.
  • the cavity wall 20a defines the latching shoulder 21a which can best be seen in Figures 1 and 16.
  • the terminal retainer 142 will now be described with a particular reference to Figures 17 to 20.
  • the retainer 142 comprises a tubular body 162 having a leading end 164 and a trailing end 166 and defining a central through bore 168 dimensioned to receive the spigot 146.
  • the end 164 is presented by a nose 170 which is chamfered theretowards but is otherwise of constant cross section.
  • terminal locking studs 172 which are constantly spaced from one another about the body 162 by an angular distance corresponding to that between the cavities 8a.
  • Each stud 172 has a terminal locking edge portion 174 best seen in Figure 18.
  • each stud 172 there extends from each stud 172 towards the end 166 of the body 162, a guide rib 176 which is of smaller Width circumferentially of the body 162, than the stud 172 and which terminates radially outwardly, in a rounded nose 178.
  • Each rib 176 has concave sides 177, the smooth curvature of which is complementary with that of the side walls 157 of the wells 156.
  • the body 162 is formed with four circumferentially aligned, latching ribs 180, each positioned between the ribs 176 of an adjacent pair and being spaced from the studs 172 towards the trailing end 166 of the retainer 142.
  • the body 162 is further formed, with a pair of diametrically opposed latching spurs 182 spaced from the ribs 176 in a direction away from the leading end 164 and each having a radially outwardly tapered latching tip 184, the tips 184 being oppositely inclined circumferentially of the retainer 142, as best seen in Figures 18 and 23.
  • There open into the trailing 166 a pair of aligned slots 186 with chamfered guide edges 188 to receive a tool blade (not shown), for angularly displacing the retainer 142 between terminal receiving, and terminal latching angular positions when it has been assembled to the housing 140 as described below.
  • the terminal retainer 142 With its end 164 leading, is mated with the spigot 146, so as to be received in the recess 152 until the ribs 180 snap into latching engagement behind respective shoulders 21a in the cavities 8a, and the nose 170 is received in the length 159 of the recess 152.
  • the studs 172 are then each disposed in a respective well 156 as will be apparent from Figure 23.
  • the side 177 of the ribs 176 which, during the mating of the retainer 142 with the spigot 146 engage the side walls 157 of the wells 156 serve to guide the latching tip 184 of each spur 182 into a respective notch 158, these notches being diametrically opposite to one another.
  • Terminal retainer 142 is then in its terminal insertion angular position, since the edge portions 174 of the studs 172 lie between the cavities 8a and so do not obstruct them. Terminals 28 are then inserted into the cavities 8a so that the latching tongues 34 of the terminals latch behind the shoulders 38a in those cavities.
  • the said tool blade is inserted into the slots 186 of the retainer 142, which are accessible from the mating face 12a, and the tool is employed to rotate the retainer 142 through a few degrees about the spigot 146, to displace the latching tips 184 of the spurs 182 each from its notch 158 into the adjacent notch 158′, whereby the retainer 142 is latched in its terminal locking angular position in which the locking edge portions 174 of the studs 172 lie just behind the flanges 144 of the terminals 28 so as to prevent their withdrawal from the cavities 8a, as shown in Figure 22, in which the spigot 146 and the terminal retainer 142 are shown as being cut back to reveal a pair of the notches 158 and 158′.
  • each rib 176 has two opposite sides 177 which are of the same configuration.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP19900117195 1989-09-06 1990-09-06 Boîtier de connecteur électrique Expired - Lifetime EP0416623B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8920154 1989-09-06
GB898920154A GB8920154D0 (en) 1989-09-06 1989-09-06 Electrical connector housing

Publications (2)

Publication Number Publication Date
EP0416623A1 true EP0416623A1 (fr) 1991-03-13
EP0416623B1 EP0416623B1 (fr) 1994-08-10

Family

ID=10662627

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900117195 Expired - Lifetime EP0416623B1 (fr) 1989-09-06 1990-09-06 Boîtier de connecteur électrique

Country Status (5)

Country Link
EP (1) EP0416623B1 (fr)
JP (1) JP3017519B2 (fr)
DE (1) DE69011441T2 (fr)
ES (1) ES2057301T3 (fr)
GB (1) GB8920154D0 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729794A1 (fr) * 1995-01-19 1996-07-26 Cinch Connecteurs Sa Connecteur electrique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573720A (en) * 1969-01-07 1971-04-06 Amp Inc Electrical connector
CH607363A5 (en) * 1975-12-23 1978-12-15 Wolf Friedrich Kg Easily mounted electrical socket
DE8508465U1 (de) * 1985-03-21 1986-01-09 Amp Deutschland Gmbh, 6070 Langen Verbinder mit einem drehbaren Einsatz zum Festhalten von Anschlüssen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573720A (en) * 1969-01-07 1971-04-06 Amp Inc Electrical connector
CH607363A5 (en) * 1975-12-23 1978-12-15 Wolf Friedrich Kg Easily mounted electrical socket
DE8508465U1 (de) * 1985-03-21 1986-01-09 Amp Deutschland Gmbh, 6070 Langen Verbinder mit einem drehbaren Einsatz zum Festhalten von Anschlüssen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2729794A1 (fr) * 1995-01-19 1996-07-26 Cinch Connecteurs Sa Connecteur electrique
US5647776A (en) * 1995-01-19 1997-07-15 Connecteurs Cinch Electrical connector

Also Published As

Publication number Publication date
EP0416623B1 (fr) 1994-08-10
DE69011441D1 (de) 1994-09-15
ES2057301T3 (es) 1994-10-16
JPH03119671A (ja) 1991-05-22
JP3017519B2 (ja) 2000-03-13
GB8920154D0 (en) 1989-10-18
DE69011441T2 (de) 1994-12-08

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