Source: http://www.google.com/patents/US4973255?dq=6462713
Timestamp: 2014-08-20 07:06:28
Document Index: 455463418

Matched Legal Cases: ['arts 74', 'art 84', 'arts 74', 'arts 74', 'arts 74', 'art 74', 'art 106', 'art 74', 'arts 74']

Patent US4973255 - Locking/ejecting mechanism for connector system - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsA mechanism is described for use with a pair of matable connectors, for locking them together when they have been mated and for later ejecting one from the other, which has the same narrow width as the connectors alone. The mechanism includes a pair of locking/ejecting devices or members (42, 44) pivotally...http://www.google.com/patents/US4973255?utm_source=gb-gplus-sharePatent US4973255 - Locking/ejecting mechanism for connector systemAdvanced Patent SearchPublication numberUS4973255 APublication typeGrantApplication numberUS 07/405,781Publication dateNov 27, 1990Filing dateSep 11, 1989Priority dateSep 11, 1989Fee statusLapsedAlso published asEP0417892A1Publication number07405781, 405781, US 4973255 A, US 4973255A, US-A-4973255, US4973255 A, US4973255AInventorsEdward RudoyOriginal AssigneeItt CorporationExport CitationBiBTeX, EndNote, RefManPatent Citations (15), Referenced by (24), Classifications (6), Legal Events (4) External Links: USPTO, USPTO Assignment, EspacenetLocking/ejecting mechanism for connector systemUS 4973255 AAbstract A mechanism is described for use with a pair of matable connectors, for locking them together when they have been mated and for later ejecting one from the other, which has the same narrow width as the connectors alone. The mechanism includes a pair of locking/ejecting devices or members (42, 44) pivotally mounted to opposite ends of a first connector (12). The second connector (14) has a shroud (61) with openings (62) near its opposite ends that receive inner parts (72) of the locking members. The inner part of each locking member has a latch (94) that is received in an undercut slot in the shroud, that extends from a shroud opening in the locked position. Each locking member also has an eject part (106) that presses against the base of the second connector as the locking member is pivoted to its eject position, to eject the first connector from the second.
What is claimed is: 1. In a connector system which includes first and second connectors that each has opposite ends, opposite sides, a matable inner region, and an opposite outer region, and wherein said connectors have a plurality of matable contacts at said inner regions, the second connector having a shroud that largely surrounds the inner regions of the connectors as the connectors are mated and unmated, the improvement of a mechanism for alternately locking together and forceably separating said connectors comprising:a pair of locking devices pivotally mounted at locked and unlocked positions, each device having an inner part, a pivot axis at said inner part, and a latch at said inner part, and each device having an eject portion, said device inner parts projecting from at least one side of said first connector; said second connector has an undercut slot located to receive the latch part of a corresponding locking device in the locked position thereof, said second connector having an eject-engaging surface positioned to be engaged by said eject part when the locking devices are pivoted to disengage the connectors; said shroud having an opening across its entire thickness substantially at each end of said second connector which receives the inner part of one of said devices as said devices approach each other and in both said locked and unlocked positions, each of said undercut slots communicating with one of said openings; the inner part of each device having a thickness about the same as said shroud, so the inner part lies in the shroud opening but does not substantially project sidewardly from the shroud. 2. The improvement described in claim 1 wherein:said second connector has a base with an outer surface, with said contacts of said second connector projecting from said base outer surface, said shroud extending outwardly from said base outer surface, said base outer surface forming said eject-engaging surface to be engaged by said eject part of a locking rejecting device, whereby to minimize the accumulation of tolerances. 3. The improvement described in claim 1 wherein:said second connector and said shroud thereof has opposite sides, said shroud having a plurality of openings including said first-mentioned openings, said openings lying in said sides of said shroud near each end thereof. said locking devices each have a pair of said inner parts lying facewise substantially against said opposite sides of said first connector and pivotally connected thereto, and each device inner part and the facewise adjacent part of said first connector constructed so one part forms at least one projection and the other forms at least one recess that receives the projection at both said locked and unlocked positions of each device. 4. In a connector system which includes first and second connectors each having opposite ends, opposite sides, and inner and outer regions, and which have matable contacts at their inner regions, said second connector having a shroud that lies around its matable region, the improvement of a locking/separation mechanism comprising:first and second locking members, each lying at a different one of said ends of said first connector, each member including a pair of parallel but spaced plate-like inner parts, and a bridging part connecting said inner part and forming a handle, said inner parts projecting from opposite sides of the widest portion of said first connector and each inner part pivotally connected to a different side of the first connector to enable pivoting about a pivot axis between locked and unlocked positions, each inner part having a latch; said shroud has a pair of openings in substantially its entire thickness at its opposite sides, near its opposite ends, that receive said pair of inner parts of a locking member when said connectors are substantially mated both in said locked and unlocked positions of said inner parts of said locking members, and has a pair of undercut slots communicating with said openings and located to receive said latches when said locking members are in said locked positions, said locking member inner parts each having a thickness no more than about 50% greater than said shroud opposite sides. 5. The improvement described in claim 4 wherein:said second connector has a base from which said contacts of said second connector projects, said shroud extends outwardly from said base, and said openings each extend from the outer edge of said shroud substantially to said base; said inner parts of each locking member each has an eject part that presses substantially against said base as the locking member pivots from said locked position toward said unlocked position. Description
BACKGROUND OF THE INVENTION Many connector systems includes a first connector whose mating end or region enters a shroud of a second connector as the connectors are mated. It is often desirable to provide a mechanism that can be easily operated to lock the connectors together, and to eject the first connector from the second in a manner to easily overcome the resistance to initial unmating. Existing mechanisms of this type are located outside the connectors, as a totally "add-on" feature that involves minimal alteration of the existing connector. As a result, the locking mechanism adds substantially to the width and length of the system, which prevents its use in applications where there is limited space, especially in the width of the connector system. Also, existing locking/ejecting mechanisms systems may engage locations on a pair or connectors that are spaced far from the matable inner regions of the connectors. As a result, the mechanism operates at locations where there is an accumulation of tolerances and the mechanism must be loose or the tolerances of the connectors must be held close. A mechanism useful to lock a pair of connectors together or eject one from the other, which was of relatively simple construction, which avoided increasing the width of the system, and which did not require closer tolerances of the connectors, would be of considerable value.
SUMMARY OF THE INVENTION In accordance with one embodiment of the present invention, a connector system is provided, which includes a pair of matable connectors and a mechanism for locking them together in a mated position and for ejecting one from the other, which is of simple and compact construction. A pair of locking/ejecting devices are pivotally mounted at opposite ends of a first connector whose matable inner region enters a shroud at the inner region of a second connector during mating. Each locking device has an inner part with a latch that is received in an undercut slot of the second connector. The shroud of the second connector has openings communicating with the undercut slots, with the inner parts of the locking devices passing into the openings as the connectors are mated. The inner part of each locking device has a thickness about the same as that of the shroud, so the inner part covers the shroud opening but does not substantially increase the overall width of the connector system.
Each locking/ejecting device includes an eject part, that can be constructed to press against the base of the second connector when the locking device is pivoted to an eject position. Each locking device at each end of the first connector, can include two inner parts lying on opposite sides of the first connector, and a bridging part that connects them.
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an isometric view of a connector system constructed in accordance with the present invention, shown mounted on a circuit board, and with the locking/ejecting mechanism in a locked position.
FIG. 2 is a partially sectional plan view of the connector system of FIG. 1.
FIG. 3 is a partial side elevation view of the connector system of FIG. 1, with the mechanism in a locked position.
FIG. 4 is a view similar to that of FIG. 3, but with the mechanism in an ejected position.
FIG. 5 is an isometric exploded view of the system of FIG. 1.
FIG. 6 is a partial side elevation view of a connector system constructed in accordance with another embodiment of the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 illustrates a connector system 10 which includes first and second connectors 12, 14 that have matable inner regions 16, 18. When the inner regions are brought together, contacts 20, 22 on the two connectors are mated. The contacts of the first connector have insulation-displacing ends 24 that engage conductors 26 of a ribbon cable 28 at the outer end 30 of the first connector. The contacts of the second connector have ends 32 that extend through plated-through holes (not shown) in a circuit board 34 to connect to conductive traces (not shown) on the underside of the board. The outer end 36 of the second connector is connected to a ground plane 38 on the circuit board.
A locking/ejecting mechanism 40 is provided, which helps to lock the mated connectors together, and which is especially useful in ejecting the first connector from the second when they are to be unmated. The mechanism includes a pair of locking/ejecting devices or members 42, 44 mounted at the opposite ends 46, 48 of the first connector 12. A pair of trunnions or shafts 50, 52 (FIG. 2) are received in holes 54, 56 in each locking member to pivotally mount the locking member about a pivot axis 60 or 62.
The inner region 18 (FIG. 3) of the second connector 14 includes a shroud 61 that largely surrounds the mating regions of the two connectors to protect the contacts. It is often only necessary to prevent the penetration of large mechanical objects into the mating region, and not to prevent the entrance of fluid or very small particles. Applicant forms openings 62, 64, 66, 68 (FIG. 2) in the shroud, extending from the outer edge 69 of the shroud to the base 112 of the second connector. The openings receive part of the locking members 42, 44, to minimize the width W of the system when the locking/ejecting mechanism is included therein.
Each locking device or member such as 42 includes a pair of inner parts 74, 76 lying in the openings 62, 64 at the opposite sides 80, 82 of the first connector. Each locking member also includes a bridging part 84 with a middle 86 and opposite ends 90, 92, and that lies largely beyond an end 46 of the first connector. The inner parts such as 74 (FIG. 3) each has a latch 94 that lies in an undercut slot 96 that receives the latch 94 in the locked position of FIG. 3. The slot 96 is "undercut" in that it is largely hidden when the system is seen in a plan view (FIG. 2) along the mating direction 98.
Each inner part such as 74 of a locking member has a hole 102 that receives a projection or detent in the form of a dimple 100, to resist pivoting of the locking member. Disengagement of the connectors 12, 14 can occur only if the locking member 42 is pivoted in the direction of arrow 104. Such pivoting is resisted by the fact that the dimple 100 lies in the hole 102. To pivot the locking member 74, it is necessary to separate the opposite first parts 74, 76 so they ride out of the dimples 100, which requires deflecting them away from each other out of the dimples. The locking member 42 has sufficient resilience to oppose but allow such deflection.
In most situations, it requires substantial force to eject the first connector from the second so as to unmate them. Such unmating is accomplished by pivoting the locking member 42 in the direction of arrow 104. As the member pivots in that direction, an eject surface or portion 106 of the locking member, which is spaced from the pivot axis 60, bears against an eject-engaging surface 109 at the outer surface 110 of the base 112 of the second connector to push the first connector 12 outwardly in the direction of arrow 114. The bridging portion 84 of the locking member includes a handle 115 that can be pivoted in the direction 104 to pivot both inner parts 74, 76 of the locking member to lift one end of the first connector 12. Proper ejection requires pivoting both locking members 42, 44 lying at the opposite ends of the first connector.
The inner parts such as 74 that lie in the shroud opening 62, each have a thickness T (FIG. 2) about the same as the thickness V of a side of the shroud, that is, the thickness T is generally no more than about 50% greater than V. This results in the locking mechanism not increasing the width W of the connector system. The presence of the locking member does result in the length L of the system being somewhat greater, but the greater length exists only at the outer region of first connector, which lies far from the circuit board, and the increase in length is relatively small when the locking members are in their closed positions. The inner parts 74 of the locking member cover most of the opening 62, especially at the inner or mating region 16, 18, to protect the mated contacts.
FIG. 4 shows how the first connector 12 is mated to the second one 14. The locking member has been pivoted in the eject direction 116 until the dimple 100 has entered another recess or hole 118 in the locking member inner part 74. As the first connector is pushed down in the mating direction 98, the eject part 106 encounters the base outer surface 110. Further downward movement of the connector causes the inner part 74 to pivot to bring the latch 94 into the undercut slot 96. Thus, the locking member automatically pivots to the locked position as the connectors are mated.
The locking members 42, 44 are easily installed, by separating the inner parts 74, 76 until the shafts 50, 52 snap into the holes 54, 56. The great simplicity of the mechanism reduces cost and increases reliability.
FIG. 6 illustrates another locking mechanism 120, wherein each locking member such as 122 pivots in the direction of arrow 124 about an axis 126 to cause an eject portion to eject a first connector 12A from a second one 14A.
Thus the invention provides a connector system with a locking/ejecting mechanism that is of simple and reliable construction, and which avoids increasing the width of the connector system. The locking mechanism includes a pair of locking members pivotally connected to opposite ends of a first connector whose inner region can enter a shroud in a second member to mate the connectors. The shroud has an opening therein extending from its outer edge to near its base, which receives an inner part of each locking member. The inner part carries a latch that is received in an undercut clot that communicates with the opening in the shroud. As the connectors are mated, the locking member is automatically pivoted to move the latch into the undercut slot to lock the connectors together. Dimples on the first connector engage recesses or holes in the inner parts, to resist pivoting of the locking member. The inner parts of the locking member lie on opposite sides of the first connector, so disengagement of the dimples with the recesses require resilient spreading apart of inner parts, which is resiliently resisted. Pivoting of the locking members towards an ejecting position causes eject surfaces or portions on the inner part to press against the second member, preferably at the base thereof, to controllably separate the connectors to control their unmating. The first parts of the locking members can be plate-like and are about as thick as the shroud, so they do not substantially increase the width of the connector system.
Patent CitationsCited PatentFiling datePublication dateApplicantTitleUS2987693 *Sep 3, 1957Jun 6, 1961IttElectrical connector assemblyUS4168877 *Jun 27, 1978Sep 25, 1979Amp IncorporatedSingle lever back plane connector systemUS4178051 *Jun 21, 1978Dec 11, 1979Amp IncorporatedLatch/eject pin headerUS4214800 *Jan 8, 1979Jul 29, 1980Amp IncorporatedLatching-ejector deviceUS4241966 *Apr 26, 1979Dec 30, 1980Thomas & Betts CorporationConnector with ejector-retainer meansUS4341428 *Mar 24, 1980Jul 27, 1982Pintek, Inc.Interconnection system for shielded electrical cableUS4410222 *Jul 6, 1981Oct 18, 1983Molex IncorporatedElectrical connector for a ribbon cableUS4447101 *Apr 12, 1982May 8, 1984Litton Systems, Inc.Connector with removable ejector latchUS4469388 *Jul 27, 1981Sep 4, 1984Thomas & Betts CorporationHeader for imposing frictional force on terminal postsUS4480885 *Feb 16, 1983Nov 6, 1984Honeywell Information Systems Inc.Printed circuit board interconnection systemUS4537454 *Jul 25, 1983Aug 27, 1985Amp IncorporatedIn a multi plane connector systemUS4579408 *Apr 4, 1984Apr 1, 1986Oki Densen Kabushiki KaishaElectrical connector structure with release and locking mechanismUS4582378 *Jan 30, 1984Apr 15, 1986Amp IncorporatedElectrical connector assembly and an ejector bar thereforGB2082401A * Title not availableGB2115239A * Title not available* Cited by examinerReferenced byCiting PatentFiling datePublication dateApplicantTitleUS5106315 *Sep 18, 1991Apr 21, 1992Amp IncorporatedDual row simm socket ejectorUS5108298 *Apr 3, 1991Apr 28, 1992Molex IncorporatedLatching and ejecting electrical connector assemblyUS5219459 *Nov 29, 1991Jun 15, 1993Yamaichi Electric Co., Ltd.Latch connectorUS5302133 *May 11, 1993Apr 12, 1994Robinson Nugent, Inc.Electrical connector socket with daughtercard ejectorUS5364282 *Aug 16, 1993Nov 15, 1994Robinson Nugent, Inc.Electrical connector socket with daughtercard ejectorUS5380213 *May 21, 1993Jan 10, 1995Burndy CorporationElectrical connector with improved ejectors and assemblyUS5389000 *Nov 18, 1993Feb 14, 1995Molex IncorporatedEdge card connector with improved latch/eject mechanismUS5429523 *Dec 14, 1993Jul 4, 1995Robinson Nugent, Inc.Electrical connector socket with daughtercard ejectorUS5511985 *Jun 16, 1994Apr 30, 1996Burndy CorporationAngled card edge connectorUS5603625 *Jan 24, 1996Feb 18, 1997Robinson Nugent, Inc.Electrical connector socket with daughtercard ejectorUS5775925 *Nov 13, 1996Jul 7, 1998Robinson Nugent, Inc.Electrical connector socket with daughtercard ejectorUS5928015 *Jul 6, 1998Jul 27, 1999Robinson Nugent, Inc.Electrical connector socket with daughtercard ejectorUS6017232 *Jul 27, 1992Jan 25, 2000Robinson Nugent, Inc.Electrical interconnect device with module ejection meansUS6126479 *Nov 30, 1998Oct 3, 2000Hon Hai Precision Ind. Co,, Ltd.ATA connector having a pull handleUS6249960 *Dec 31, 1996Jun 26, 2001Berg Technology, Inc.Tool for manipulating an electrical connector and method of useUS6494729 *Jun 4, 2001Dec 17, 2002Hyperchip Inc.Insertion and extraction aid for printed circuit cardUS6755680 *Jan 14, 2002Jun 29, 2004Autonetworks Technologies, Ltd.Fixture device for use in connection of flat wire member with terminal connectorUS6802728 *Aug 14, 2003Oct 12, 2004Hon Hai Precision Ind. Co., Ltd.Socket connector having ejecting mechanismUS7789672 *Nov 24, 2008Sep 7, 2010Hon Hai Precision Ind. Co., Ltd.Socket with position clumpsEP0688067A2Jun 16, 1995Dec 20, 1995Framatome Connectors InternationalAngled card edge connectorWO1994027342A1 *May 11, 1994Nov 24, 1994Robinson Nugent IncElectrical connector socket with daughtercard ejectorWO1996018222A1 *Dec 6, 1995Jun 13, 1996Berg Tech IncAn ejector latch for latching first and second connectorsWO2013119530A1 *Feb 5, 2013Aug 15, 20133M Innovative Properties CompanyElectrical connector latchWO2013119533A1 *Feb 5, 2013Aug 15, 20133M Innovative Properties CompanyBoard mount electrical connector* Cited by examinerClassifications U.S. Classification439/157, 439/160International ClassificationH01R13/639, H01R13/629Cooperative ClassificationH01R13/62994European ClassificationH01R13/629P2Legal EventsDateCodeEventDescriptionFeb 7, 1995FPExpired due to failure to pay maintenance feeEffective date: 19941130Nov 27, 1994LAPSLapse for failure to pay maintenance feesJul 5, 1994REMIMaintenance fee reminder mailedSep 11, 1989ASAssignmentOwner name: ITT CORPORATION, NEW YORKFree format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:RUDOY, EDWARD;REEL/FRAME:005135/0267Effective date: 19890831RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google