EP0081937B1 - Electrical connector and contact receptacle - Google Patents
Electrical connector and contact receptacle Download PDFInfo
- Publication number
- EP0081937B1 EP0081937B1 EP82306337A EP82306337A EP0081937B1 EP 0081937 B1 EP0081937 B1 EP 0081937B1 EP 82306337 A EP82306337 A EP 82306337A EP 82306337 A EP82306337 A EP 82306337A EP 0081937 B1 EP0081937 B1 EP 0081937B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- receptacle
- passageway
- connector
- arms
- 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.)
- Expired
Links
- 239000004020 conductor Substances 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 13
- 230000000295 complement effect Effects 0.000 claims description 7
- 210000005069 ears Anatomy 0.000 claims description 5
- 238000009413 insulation Methods 0.000 description 3
- 230000002411 adverse Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000002788 crimping Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Images
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
- H01R13/56—Means for preventing chafing or fracture of flexible leads at outlet from coupling 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
- H01R13/02—Contact members
- H01R13/10—Sockets for co-operation with pins or blades
- H01R13/11—Resilient sockets
- H01R13/112—Resilient sockets forked sockets having two legs
-
- 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
- H01R13/02—Contact members
- H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together
-
- 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
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
- H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
-
- 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
- H01R13/73—Means for mounting coupling parts to apparatus or structures, e.g. to a wall
- H01R13/74—Means for mounting coupling parts in openings of a panel
Definitions
- the contact receptacles 2 for the outer passageways 4 are inserted in inverted position with the plate section 20 uppermost and the latch ears 21 projecting downwardly to engage the shoulders 14 on the floors of the passageways as shown in Figure 5.
- the central pin is suitably provided with an enlarged head, for example by welding, soldering or otherwise bonding a disc-like cap on the pin.
- the disc-like cap engages the upper side of the receptacle to inhibit axial withdrawal of the connector from the cluster of pins. It will be understood that in such an arrangement, axial mating of the connector with the pins is precluded.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Multi-Conductor Connections (AREA)
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Description
- This invention relates to an electrical connector and to a contact receptable for such a connector and is particularly concerned with so-called cluster block connectors utilised in effecting releasable electrical connection to hermetically sealed motors of refrigerator units.
- Generally, electrical connection through a hermetically sealed enclosure is effected through a cluster of three conductive pins mounted in a ceramic disc secured within a metal annulus which is welded to the hermetic container at an aperture. Releasable connection to the pins is effected by a connector having pin-receptacle contacts suitably arranged to engage the pins. Difficulties are presented in that access to the pins is generally restricted and, due to the nature of the motor and compressor unit, the connection is subject to vibration and adverse atmospheric environment.
- Commonly used connectors are adapted for axial connection with the pins but this requires access space above the pins.
- Applicants GB-A-1 100738 disclose a connector adapted for axial engagement with a cluster of three conductive pins and which has the following features, a slab-like insulating housing having a plurality of through passageways open at opposite ends of the housing and having pin receiving apertures at a side face of the housing communicating with respective passageways, each passageway containing an electrical contact receptacle having a receptacle portion registering with the pin-receiving aperture and a conductor terminating portion connected to a conductor wire extending from an open end of the passageway, the pin receiving apertures extending laterally to one of the open ends of each passageway opposite the end through which the conductor wire extends, and the receptacle portions of the contact receptacles each comprise a pair of resilient arms extending lengthwise of the associated passageway for receipt of a pin through the associated aperture between them.
- This prior proposal requires that the wire connecting section of the receptacle in the middle passageway extends in an opposite sense to those in the outer passageways and the block is formed externally with a gripping means on a side edge so that a wire connected to a receptacle and extending from the block in one direction, can be bent around the side edge to be held in the wire gripping means to extend in an opposite direction. Each contact receptacle comprises a floor or base portion formed with a central aperture to. allow passage of an end portion of a pin contact.
- It is an object of the invention to provide a connector capable of axial or lateral engagement with the pins and to provide an improved contact receptacle for use in such a connector.
- An electrical connector according to the present invention comprises a slab-like insulating housing having a plurality of through passageways open at opposite ends of the housing and having pin receiving apertures at a side face of the housing communicating with respective passageways, each passageway containing an electridal contact receptacle having a receptacle portion registering with the pin-receiving aperture and a conductor terminating portion connected to a conductor wire extending from an open end of the passageway, the pin receiving apertures extending to one of the open ends of each passageway opposite the end through which the conductor wire extends, and the receptacle portions of the contact receptacles each comprise a pair of resilient arms extending lengthwise of the associated passageway for receipt of a pin through the associated aperture between them characterised in that the pin receiving apertures extend laterally to open ends of the passageways at the same end of the housing, the conductor wires extending through open ends at the opposite end of the housing, the arms at facing free end portions having opposed contact surfaces which diverge towards adjacent open ends of the passageways whereby the connector may engage complementary pins laterally or axially.
- It is known from US-A-3 676 829 to provide a contact receptacle formed with divergent end portions on opposed contact arms defining a flared entry.
- In one embodiment, the housing at one of the passageways is formed with a resilient latch arm extending rearwardly from a forward end at which it is integrally formed with a bridge extending over the passageway, the free end of the arm projecting into the passageway through a slot and having a rear facing shoulder adapted to engage the head of a pin extending transversely of the passageway to resist lateral disengagement of the connector.
- Suitably the housing is formed at its forward end with a pair of side extensions which are chamfered on the facing surfaces to provide a rearwardly convergentpin-guide.
- In a connector for a three pin arrangement, the housing is suitably provided with three passageways, the outer pair being located further from the apertured side face than is the central passageway, whereby the central contact receptacle is arranged to engage a complementary pin further from the free end of the pin than the receptacles of the outer pair are arranged to engage their associated pins. Suitably the outer pair of passageways are adapted to accommodate their contact receptacles in inverted relationship to that of the central passageway.
- The invention further includes a contact receptacle for such a connector comprising a receptacle portion extending forwardly from a wire connecting section and being stamped and formed from sheet metal stock, the receptacle section being of fork-like form having a pair of resilient arms extending forwardly from a plate-like mounting section, characterised in that the arms are free ended and are of double metal thickness formed by folds extending along outer sides of the arms, flanges being folded up between the arms from the underside layer at the forward free ends of the arms to define opposed contact faces, the flanges being formed with forward divergent portions presenting a flared lateral entry.
- Suitably the flanges are supported on their remote sides by support flanges turned up from the upper layers of the arms.
- Transversely of the arms the contact flanges are suitably dished to present arcuately convex facing contact surfaces.
- To facilitate the folding of the arms, the outer sides are suitably apertured along the fold.
- For retention purposes in the complementary housing the contact is formed between the arms with a resilient detent turned back from a forward end of the plate-like mounting section, and a pair of ears extend upwardly from opposite sides of the mounting section to provide shoulders opposed to the detent.
- The invention will now be described, by way of example, with reference to the accompanying partly diagrammatic drawings in which:-
- Figure 1 is a perspective view of a connector housing and a contact receptacle arranged for insertion into a housing passageway;
- Figure 2 is a plan view of the housing of Figure 1;
- Figure 3 is an underside view of the housing of Figure 1;
- Figure 4 is a sectional elevation taken on the line 4-4.of Figure 2, viewed in the direction of the arrows, and with a contact receptacle in position;
- Figure 5 is a sectional elevation taken on the line 5-5 of Figure 2, viewed in the direction of the arrows and with a contact receptacle in position;
- Figure 6 is an end view taken from the right hand of Figure 4, but with the contact removed;
- Figure 7 is an end view taken from the left hand of Figure 4, but with the contact removed;
- Figure 8 is a sectional elevation corresponding to Figure 4 but with the connector engaging a pin cluster mounted in the wall of an hermetic enclosure;
- Figure 9 is a plan view of a contact receptacle corresponding to that of Figure but prior to connection to a conductor wire;
- Figure 10 is a side elevation of the contact receptacle of Figure 9; and
- Figure 11 is a section taken on the line 11-11 viewed in the direction of the arrows.
- The connector of Figure 1 comprises a slab-like insulating housing 1 as shown in Figures 2 to 7 adapted to receive three
contact receptacles 2 shown in greater detail in Figures 9 to 11. - The housing 1 is suitably moulded from a resilient insulating material, and comprises a generally rectangular slab-
like body 3 having three parallel, open-ended passageways 4 extending between opposite ends, and formed at a forward end with a pair ofside extensions 5. On its underside, as seen in Figure 3, the body is formed withslots respective passageways 4 to define pin-entry apertures. Thecentral slot 6 extends rearwardly further than theside slots 7. On its upper side as seen in Figures 1, 2 and 4, thebody 3 is formed with a central resilientlatch arm 8 extending rearwardly from a bridge 9 at the forward end of the body. Thelatch arm 8 projects into aslot 10 communicating with thecentral passageway 4 and terminates at its rear end forwardly of but generally opposite the rear end of theslot 6. At its free rear end thelatch arm 8 is formed with a downwardly projectingshoulder portion 11 and an upwardly extendingear portion 12, theshoulder portion 11 presenting a rear facing shoulder spaced forwardly of the rear end ofslot 10 and theear portion 12 projecting outwardly of theslot 10. Agroove 13 extends rearwardly from the rear ofslot 10 in the upper surface of thebody 3, to the rear end of thebody 3. - As seen in the end views of Figures 6 and 7, the
passageways 4 are. of generally T-section having a broad stem portion and a thin head portion, the T-section of thecentral passageway 4 being inverted and positioned below theouter passageways 4. Towards its rear end, eachpassageway 4 is formed with acontact retaining shoulder 14 facing forwardly, the shoulder in the central passageway being in the roof of the passageway and those of theouter passageways 4 in the floor. - As seen in Figures 1 to 3, the
forward side extensions 5 are chamfered on their facing sides at 15 to define a rearwardly convergent path to the outer sides of theouter slots 7, and, as seen in Figure 3, the forward wall of thebody 3 bordering theslot 6 at its forward end is formed withconvergent surfaces 16 defining a guide into theslot 6. - The
contact receptacle 2, as seen in Figure 1, comprises areceptacle portion 17 extending forwardly from a wire connecting section 18, and is suitably stamped and formed from sheet metal. Thereceptacle section 17 is of fork-like form having a pair ofresilient arms 19 extending forwardly in spaced parallel manner from a plate-like mounting section 20, with the wire connecting section 18 extending from a rear of thesection 20. The wire connecting section and themounting section 20 are of single metal thickness but thearms 19 are of double metal thickness. At a forward end thesection 20 is formed between thearms 19 with an upwardly and rearwardly extending latching detent 21, and rearwardly of thedetent 21 atopposite sides ears 22 are folded up to present forward facingshoulders 23 opposed to thelatching detent 21. The wire connecting section comprises a conventionalwire crimp ferrule 24 andinsulation support ferrule 25, initially of U-form as shown in Figures 9 and 10, and secured by crimping to the core and insulation ofinsulated conductor wire 26. - The
arms 19 comprising a double metal thickness are formed by folding at outer sides of the arms to define an underside metal layer, and to facilitate the folding,apertures 27 are formed at central portions of the fold lines. At the forward ends of the arms,flanges 28 are folded up from the underside layer, as seen most clearly in Figure 11, to defineopposed contact surfaces 29.Smaller flanges 30 are folded up from the inner edges of the upper metal layer to support the rear sides of theflanges 28. Theflanges 28 at theirforward ends 31 are folded outwardly in divergent manner, as seen most clearly in Figure 9, to provide a convergent pin-entry into the contact zone between theopposed contact faces 29. Theflanges 28, as seen in Figure 11, are also dished, or embossed to present arcuately convex facing contact surfaces with a convergent pin-entry from the lower side or from the upper side. - The
contact receptacle 2 as shown in Figures 9 and 10 is shown prior to connection to a conductor wire, and the terminal extends laterally from acarrier strip 36 integrally joined to theinsulation support ferrule 25 by aseverable neck portion 37. Suitably contact receptacles are formed in strip with a plurality of terminals extending laterally at regular intervals from acontinuous carrier strip 36 so that they may be applied to respective conductor wires in a terminating machine. - As seen in Figure 4, the
contact receptacle 2 is inserted into the central passageway from its rear end in the orientation shown in Figure 1, i.e. with thesection 20 engaging the floor of the passageway and thelatch 21 projecting upwardly, until thelatch 14 engages theforward shoulder 14 to resist withdrawal of the contact rearwardly. Theears 22 register on opposite sides of the shoulder and the forward facingshoulders 23 engage complementary shoulders in the housing to resist further forward movement. Thecontact surfaces 29 on flanges 38 are positioned above the rear end of the pin-entry slot 6 to admit upward entry of a pin between the contact surfaces as shown in Figure 8. - The
contact receptacles 2 for theouter passageways 4 are inserted in inverted position with theplate section 20 uppermost and thelatch ears 21 projecting downwardly to engage theshoulders 14 on the floors of the passageways as shown in Figure 5. - In the assembly of Figure 8 a
cluster member 32 comprises a triangular array of three parallel spacedpins 33 extending through and on opposite sides of a ceramic disc mounted in ametal annulus 34 secured by welding in an aperture of anhermetic vessel 35 to provide art hermetic seal. The connector comprising the housing 1 containing threecontact receptacles 2 as described above is assembled to thepins 33 to effect secure electrical connection by moving the connector from the right towards the cluster ofpins 33, initially to engage twoouter pins 33 between theextensions 5 with the central pin registering with the entrance to theslot 6. Thechamfered surfaces pins 33 into theslots convergent entry surfaces 31 of the contact receptacles to flex thearms 14 apart until the pins are engaged between opposed contact faces 29 of thecontact receptacles 2. The rear ends of theslots pins 33 in this assembly operation and serve to ensure that thepins 33 are properly located with regard to thecontact surfaces 29. Thepin 33 in thecentral slot 6, during the above assembly operation, engages the underside of theshoulder portion 11 of thelatch arm 8, camming it upwardly until thepin 33 passes theshoulder portion 11 which relaxes downwardly to engage a side of the pin opposite the rear end ofslot 10. Thisshoulder portion 11 thus resists relative lateral movement between the connector and thepins 33 in an opposite direction. - In order to release the connector in an opposite direction to that described in the assembly, i.e. left to right, it is necessary to lift the
ear 12 to disengage theshoulder portion 11 from the central pin. Thegroove 13 provides access for a tool should space above the connector be restricted. - Where space is not restricted above the connector, it may be engaged with or disengaged from the
pins 33 in conventional axial manner, the arcuately convex contact surfaces 29, seen in Figure 11, facilitating entry of apin 33 between the contact surfaces whether the contact receptacle is in the Figure 11 orientation, as in thecentral passageway 4, or in inverted orientation as in theouter passageways 4. - By virtue of the double thickness of the
arms 19 of thecontact receptacles 2, and the arrangement of the general plane of the sheet metal in the direction of flexure, the receptacles are stiff in flexure and not only provide high contact force on the pins, but are also resistant to adverse vibration in their operational environment. The contact design results in a low height as seen in side elevation and this, together with the inverted arrangement of the central contact relative to the outer contacts, enables a connector of low height to be provided. This is advantageous in the restricted space normally available in installations of the kind for which the connector is intended. - In order further to secure the connector against inadvertent release from the pin cluster, the central pin is suitably provided with an enlarged head, for example by welding, soldering or otherwise bonding a disc-like cap on the pin. In use, as in Figure 8, the disc-like cap engages the upper side of the receptacle to inhibit axial withdrawal of the connector from the cluster of pins. It will be understood that in such an arrangement, axial mating of the connector with the pins is precluded..
Claims (9)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8137563 | 1981-12-12 | ||
GB8137563 | 1981-12-12 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0081937A2 EP0081937A2 (en) | 1983-06-22 |
EP0081937A3 EP0081937A3 (en) | 1983-07-20 |
EP0081937B1 true EP0081937B1 (en) | 1986-04-02 |
Family
ID=10526577
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82306337A Expired EP0081937B1 (en) | 1981-12-12 | 1982-11-29 | Electrical connector and contact receptacle |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0081937B1 (en) |
JP (1) | JPS58108676A (en) |
DE (1) | DE3270303D1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5188535A (en) * | 1991-11-18 | 1993-02-23 | Molex Incorporated | Low profile electrical connector |
JPH081566Y2 (en) * | 1992-05-19 | 1996-01-17 | エスエムケイ株式会社 | Fork contact for connector |
JP4467099B2 (en) * | 1999-04-14 | 2010-05-26 | モレックス インコーポレイテド | Electrical connector terminals |
JP4732173B2 (en) * | 2006-01-13 | 2011-07-27 | 株式会社水道技術開発機構 | Valve structure and detour formation method using the same |
DE102015200496A1 (en) * | 2015-01-14 | 2016-07-14 | Te Connectivity Germany Gmbh | Contact protection for an electrical conductor and arrangement for connecting two electrical conductors |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB902969A (en) * | 1957-09-24 | 1962-08-09 | Standard Telephones Cables Ltd | Electrical sockets |
US3101985A (en) * | 1961-02-23 | 1963-08-27 | Products Inc Van | Electrical connector |
US3336567A (en) * | 1965-07-21 | 1967-08-15 | Amp Inc | Electrical connector |
ZA712691B (en) * | 1970-05-22 | 1972-01-26 | Amp Inc | Contact element for a printed circuit edge connector |
US3676829A (en) * | 1970-10-30 | 1972-07-11 | Hubbell Inc Harvey | Contact spring assembly |
US4253718A (en) * | 1979-09-04 | 1981-03-03 | General Motors Corporation | Electrical connector |
-
1982
- 1982-11-29 EP EP82306337A patent/EP0081937B1/en not_active Expired
- 1982-11-29 DE DE8282306337T patent/DE3270303D1/en not_active Expired
- 1982-12-13 JP JP57218215A patent/JPS58108676A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
DE3270303D1 (en) | 1986-05-07 |
JPS58108676A (en) | 1983-06-28 |
JPH0326510B2 (en) | 1991-04-11 |
EP0081937A3 (en) | 1983-07-20 |
EP0081937A2 (en) | 1983-06-22 |
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