EP2059979B1 - Connecteur électrique du type à levier - Google Patents

Connecteur électrique du type à levier Download PDF

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Publication number
EP2059979B1
EP2059979B1 EP07809405A EP07809405A EP2059979B1 EP 2059979 B1 EP2059979 B1 EP 2059979B1 EP 07809405 A EP07809405 A EP 07809405A EP 07809405 A EP07809405 A EP 07809405A EP 2059979 B1 EP2059979 B1 EP 2059979B1
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EP
European Patent Office
Prior art keywords
connector
lever
actuating lever
force
connectors
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.)
Active
Application number
EP07809405A
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German (de)
English (en)
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EP2059979A4 (fr
EP2059979A2 (fr
Inventor
Kurt P. Dekoski
David L. Langolf
Thomas Dolinshek
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Molex LLC
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Molex LLC
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Publication of EP2059979A2 publication Critical patent/EP2059979A2/fr
Publication of EP2059979A4 publication Critical patent/EP2059979A4/fr
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Publication of EP2059979B1 publication Critical patent/EP2059979B1/fr
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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
    • H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
    • H01R13/62933—Comprising exclusively pivoting lever
    • H01R13/62955—Pivoting lever comprising supplementary/additional locking means
    • 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
    • H01R13/62933—Comprising exclusively pivoting lever
    • H01R13/62938—Pivoting lever comprising own camming means
    • 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
    • H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap

Definitions

  • This invention generally relates to electrical connector assemblies and, more particularly, to an electrical connector assembly including electrical connectors that are matingly connected and disconnected by operation of a lever actuator of one of the connectors.
  • a typical lever-type electrical connector includes an assembly of a first connector or housing and a second connector or header. To mate the connectors together, the assembly has an actuating or assist lever mounted for pivoting on the first connector with pivoting of the lever causing the first and second connectors to shift between unmated and fully mated configurations. To this end, the actuating lever and the second connector typically have a cam groove and a cam follower arrangement for drawing the second connector into mating condition with the first connector in response to pivoting of the lever.
  • Such connectors are commonly used in the automotive industry; however, other uses are also possible.
  • a typical configuration for such lever-type electrical connectors is to provide a generally U-shaped lever structure having a pair of relatively thin walled lever arms that are disposed on opposite sides of the housing connector.
  • the lever arms may have cam grooves for engaging cam follower projections or posts on opposite sides of the header assembly.
  • These types of lever connectors are often used where relatively large forces are required to mate and unmate a pair of connectors. For instance, frictional forces encountered during connecting and disconnecting the connectors may make the process difficult to perform by hand.
  • relatively large electrical connectors with high pin counts, such as connectors with 90 or more pin contacts require at least about 300 N to mate or un-mate the connectors.
  • automotive industry standards specify a maximum of 75 N of user input force be required to perform this mating and un-mating of the connectors.
  • U.S. Patent No. 6,099,330 to Gundermann et al. discloses an electrical connector assembly having a lever for mating and unmating electrical connectors.
  • the connector of the '330 patent is disclosed as being used with a connector assembly with only 38 contacts, which is less than half the number of pin contacts employed in the large electrical connector assemblies described above.
  • the configuration of the interface between the cam of the lever and the camming surface of the header electrical connector of the '330 electrical assembly connector is not suitable for larger connectors because the lever does not generate a sufficient mechanical advantage using only 75 N or less of input force to shift the connectors to a mated position relative to each other.
  • the connector assembly in the '330 patent employs an assist lever with curved cam engagement surfaces.
  • Such a curved surface does not provide a fixed contact location between the curved cam surface of the lever and cam surface area of the header connector as the lever is pivoted, but instead generates a rolling action in the cam surface area so that the leverage and output force generated by pivoting of the lever for mating the connectors together is variable.
  • the variable engagement of the curved cam force transmitting surfaces generates an inefficient transfer of forces therebetween.
  • This variable and rolling engagement between the lever and cam surface area typically will not generate the concentrated, high levels of output forces (e.g., greater than 300 N) with relatively low actuator forces applied to the lever (e.g., 75 N or less).
  • Gundermann Patent Application US 2002/0031928 A1 discloses a connector with lever, showing a laver attached to the first connector housing to facilitate sliding engagement between two mating housing. It is an object of said application to provide a connector assembly that includes a lever that does not include camming features in the form of grooves or slits therein or therethrough. Furthermore, a connector assembly is provided including a lever that will not rotate prematurely out of the desired assembly position.
  • European Patent EP 1 320 150 A2 discloses an electrical connector assembly for connecting electrical contacts, showing a lever member including cam arms which move the two housings toward each other when the lever member is being rotated.
  • the connector assembly has to be fixed by an external notch, as without the notch no compression force is inflicted to hold the two housings in the mated position leaving it to casually open itself.
  • the actuating lever In many cases, it can be necessary for the actuating lever to be locked in an initial or pre-mate position so that the actuating lever is properly aligned for assembly of the electrical connectors. By locking the lever in such a position, the connectors can be mated without having to reposition the actuating lever to this aligned position for connector mating.
  • Current connector configurations such as the lever design in the '330 patent, utilize a flexible or resilient portion on the lever itself at the ends of relatively thin arms thereof to lock the lever in the pre-mate position. In order to release the lever, the resilient end portions of the lever arms are flexed or bent away from their locked position so that the lever is free to pivot. Since the thin lever arms are used to generate the output force for mating and unmating the connectors, generally it is undesirable to have these lever arms be flexed or deformed during pivoting of the lever actuator.
  • lever actuator for an electrical connector assembly that generates a more efficient mechanical advantage, particularly with large electrical connectors that require the lever actuator to be able to generate large output forces without requiring large input actuator forces on the lever.
  • a lever actuator that is not deformed as it is pivoted would be desired.
  • a connector assembly includes first and second electrical connectors for being mated together in electrical communication.
  • an actuating lever is mounted to the first connector or housing for being shifted to mate the connectors together.
  • the actuating lever has a predetermined first position with the connectors unmated and a predetermined second position with the connectors fully mated.
  • the actuating lever includes a cam projection thereon and the second connector or header includes a corresponding cam groove. The cam projection is configured to engage the cam groove so that shifting of the actuating lever from the first position to the second position causes the connectors to fully mate with each other.
  • the connector assembly retains the actuating lever in the first position to generally align the cam groove and cam projection for connector assembly. That is, for example, the actuating lever is held against shifting from the first position during shipping and handling so that the lever is presented in the correct alignment for mating of the first and second connectors.
  • the first connector includes a blocking portion for releasably retaining the actuating lever in the first position.
  • the second connector includes a release portion. The release portion is operable to shift the blocking portion of the first connector to allow the actuating lever to be shifted from the first position to the second position.
  • the blocking portion includes a portion of the first connector wall to retain the lever in its first position.
  • the blocking portion is a thin wall portion of the first connector.
  • the blocking portion can be a resilient portion of the first connector.
  • the connector assembly includes a pair of connectors that each has contacts adapted to frictionally engage each other to establish an electrical connection therebetween.
  • the lever actuator of one of the connectors includes a force-input end for applying an actuation force thereto to pivot the lever actuator between a lock position with the connectors releasably locked together to secure the electrical connection between the contacts thereof and a release position with the connectors released from the locked position.
  • a pivot connection is provided between the lever actuator and the one connector about which the lever actuator is pivotal.
  • the lever actuator includes a predetermined force transmitting engagement portion at which the lever actuator engages the other connector to transmit a leveraged output force thereto upon the pivoting of the lever actuator from the release position to the lock position.
  • a first, fixed predetermined distance is provided between the force input end of the lever actuator and the pivot connection and a second, fixed predetermined distance is provided between the force transmitting engagement portion and the pivot connection that is smaller than the first, fixed predetermined distance.
  • a fixed, predetermined leverage ratio is defined by dividing the larger, first fixed predetermined distance by the smaller, second fixed predetermined distance. This leverage ratio stays substantially constant during pivoting of the lever actuator from the release position to the lock position. In this manner, with a constant actuation force applied to the force input end of the lever actuator, a known constant output force will be generated on the other connector allowing for a more precise force transfer system to be designed for the connector assembly herein.
  • an electrical connector assembly is provided that is configured to precisely maximize and concentrate the mechanical advantage provided by the actuating or assist lever. It is preferred that the connector assembly be configured to provide an output force of at least about 300 N with a user input force of only about 75 N or less on a force-input end of the actuating lever.
  • the connectors herein, therefore, are able to generally comply with automotive industry standards because lower levels of input forces can be used to mate even large connectors, such as those with at least 90 pin contacts.
  • the constant leverage ratio can be precisely set via the fixed distances along the lever actuator to provide a large output force that is achieved with lower . levels of actuation force being applied to the force-input end of the lever by the user.
  • the predetermined leverage ratio is approximately 7:1.
  • the predetermined leverage ratio is sufficient to achieve the leveraged output force of approximately 300 N or greater with the actuation force being approximately 75 N or less.
  • the lever actuator includes a distal end opposite the force input end.
  • the force transmitting engagement portion of the lever actuator is a protrusion at the distal end of the lever actuator.
  • the other connector has a pocket that includes a drive surface against which the protrusion of the lever actuator engages for causing the connectors or slide in a linear direction relative to each other upon pivoting of the lever actuator.
  • the pocket can include corner surfaces with one of the corner surfaces being the drive surface.
  • the lever actuator distal end further includes an undercut corner area adjacent the protrusion to provide clearance so that only the protrusion of the lever actuator distal end engages the pocket drive surface to transmit the leveraged output force thereto as the lever actuator is pivoted from the release position to the lock position.
  • the pocket includes an abutment surface that is opposite the drive surface across the pocket.
  • the abutment surface extends generally orthogonal to the linear direction, so that with the lever actuator in the release position, relative linear sliding of the connectors toward each other to allow the lever actuator to lock the connectors together causes the lever actuator distal end to engage against the abutment surface without causing pivoting of the lever actuator toward the lock position thereof.
  • the lever actuator has a robust release position in that the lever actuator is not pivoted from its release position by sliding of the connectors together prior to user operation of the lever actuator. This is in contrast to the connector assembly of the previously discussed '330 patent where sliding the connectors together causes the lever to pivot from the corresponding release position without any user input actuator force applied thereto.
  • the lever actuator also may include two additional predetermined force transmitting engagement portions that sequentially engage and transmit a dual-stage leveraged output force to the other connector. In an initial stage, a high level of output force is generated, and in a subsequent stage, a lower level of output force is generated. These high and low levels of output force are generated independent of the user as such varying level of output forces are obtained with the same actuation force being applied to the force input end to pivot the lever actuator from the locked position to the release position.
  • the two additional predetermined force transmitting engagement portions may be at different fixed, predetermined distances from the pivot connection to provide two different predetermined leverage ratios. These two different predetermined leverage ratios both stay substantially constant during the corresponding stages of pivoting of the lever actuator from the locked position to the release position.
  • the first predetermined distance provides for a leverage assist ratio of at least about 8:1 and the second predetermined distance provides for a leverage assist ratio of at least about 5:1.
  • FIG. 1 is a perspective view of a lever connector assembly including a first and second connector shown in an locked or mated configuration with an actuating lever in a locked or second position;
  • FIG. 2 is an perspective view of the lever connector shown in an unassembled configuration with the actuating lever in a pre-mate or first position;
  • FIG. 3 is a perspective view of the actuating lever showing a force input end and a cam projection including at least one predetermined force transmitting engagement portion thereof;
  • FIG. 4 is a perspective view of the first or housing connector showing a blocking portion thereof formed from a resilient tab or a thin wall portion of the first connector, the blocking portion for blocking shifting of the actuating lever in a mating direction;
  • FIG. 5 is a perspective view of the first or housing connector showing the actuating lever in the first or pre-mate position and being blocked from shifting by engagement with the blocking portion of the first connector;
  • FIG. 6 is another perspective view of the first or housing connector showing the lever in the first or pre-mate position with a flat portion of the lever cam projection engaging the blocking portion of the housing wall;
  • FIG. 7 is a perspective view of the connector assembly prior to mating showing the first connector being initially inserted into the second connector;
  • FIG. 8 is an enlarged perspective view of the connector assembly in the initial positioning of FIG. 7 showing a releasing portion of the second connector and a leading cam surface thereof for cammingly engaging the blocking portion for shifting the blocking portion from its blocking position to a release position;
  • FIG. 9 is a perspective view of the second connector and the actuating lever in the pre-load position showing the relationship of the cam projection relative to the release portion, the first connector being removed for clarity;
  • FIG. 10 is an enlarged perspective view of the connector assembly and the actuating lever after the second connector has been inserted linearly a distance into the first connector (not shown for clarity) showing the cam projection of the actuator lever configured to engage a cam groove or pocket of the second connector;
  • FIG. 11 is a partial cross-sectional view of the connector assembly during the initial mating of the connectors showing the leading cam surface of the second connector release portion engaging the blocking portion of the first connector;
  • FIG. 12 is an enlarged, partial cross-sectional view of the connector assembly of FIG. 11 showing the leading cam surface of the second connector release portion engaging the blocking portion of the first connector to resiliently shift the blocking portion to allow the actuating lever to be shifted from the pre-mate to the mated position;
  • FIG. 13 is a partial elevational view of the actuating lever and cam projection thereof showing a plurality of predetermined force transmitting engagement portions
  • FIG. 14 is an elevational view of the actuating lever showing a force input end for applying an actuation force thereto to pivot the lever actuator, a pivot connection thereof, and the predetermined force transmitting engagement portions on the cam projection opposite the force input end;
  • Fig. 15 is a elevational view of the lever cam projection in a pre-mate position relative to the cam groove showing an abutment surface and a drive surface of the second connector cam groove or pocket;
  • FIG. 16 is an elevational view of the lever cam projection shown approximately 20° into a mating sequence with a protrusion on the cam projection engaging the drive surface of the cam groove to linearly advance the second connector into a mating relationship with the first connector;
  • FIG. 17 is an elevational view of the lever cam projection shown approximately 40° into a mating sequence with the protrusion of the cam projection continuing to engage the drive surface of the cam groove;
  • FIG. 18 is an elevational view of the lever cam projection shown in the mated position with opposing flats of the cam projection engage corresponding portions of the abutment and drive surfaces of the cam groove;
  • FIG. 19 is an elevational view of the lever cam projection shown approximately 20° into a mating sequence with a undercut corner area thereof positioned to provide clearance so that only the protrusion of the cam projection engages the drive surface of the cam groove;
  • FIG. 20 is an elevational view of the lever cam projection shown approximately 20° into an un-mating sequence showing a first, un-mating predetermined force transmitting engagement portion engaging the abutment surface to provide an initial or high level of un-mating output force to disengage the second connector from the first connector;
  • FIG. 21 is an elevational view of the lever cam projection shown approximately 40° into an un-mating sequence showing a second, un-mating predetermined force transmitting engagement portion engaging the abutment surface to provide a subsequent or lower level of output force to continue the disengagement of the second connector from the first connector;
  • FIG. 22 is an enlarged, elevational view of the lever cam projection shown in the mated position having an inclined flat surface and a clearance at the end of the cam projection providing the engagement of the first, un-mating predetermined force transmitting engagement portion.
  • a lever-type electrical connector assembly 10 that includes a first connector or housing 12 and a second connector or header 14. Each connector 12 and 14 includes a plurality of electrical contacts (not shown) received therein.
  • the assembly 10 includes greater that 90 electrical contacts and, when assembled, is at least 70 mm wide, 60 mm long, and 60 mm high.
  • the connector 10 may include 98 electrical contacts and be configured as a harness connector for diesel engines; however, other uses, sizes, and configurations of the connector 10 are also possible.
  • the connector 10 further includes a lever actuator 16 having a first, pre-mate, or release position ( FIG. 2 ) and a second, mated, or lock position ( FIG. 1 ).
  • the lever actuator 16 is arranged and configured to linearly urge or advance the second connector 14 into a mating relationship with the first connector 12 upon the lever actuator 16 being shifted or pivoted from the pre-mate position of FIG. 1 to the mated position of FIG. 2 .
  • the connectors 12 and 14 and the lever 16 are configured for efficiently mating the larger size connectors as described above.
  • the lever 16 is generally more robust than prior levers to maximize the mechanical advantage thereof with little or no wasted input force to overcome play in the pivoting of the lever.
  • the lever actuator 16 includes a cam projection 18 on an actuating end 20 thereof that is configured to engage a cam groove 22 positioned on the header 14 so that shifting of the lever actuator 16 from the first to the second position causes the connectors 12 and 14 to linearly advance to be fully mated with each other.
  • the lever 16 When fully mated, the lever 16 includes a latch member 24 thereon that cooperates with a locking member 26 positioned on the housing 12 to lock the lever 16 in the mated position.
  • the locking member 26 blocks reverse movement of the lever 16.
  • a resilient release tab 28 on the locking member 26 is depressed and biased downwardly to permit free movement of the lever 16.
  • the connector assembly 10 generally includes male and female connector portions.
  • the first connector 12 is formed from a wall 30 that defines a generally rectangular housing for the electrical contacts (not shown) of a female connector.
  • the second connector 14 is formed from a corresponding wall 32 that also defines a generally rectangular header for corresponding electrical contacts (not shown) to form a male connector that is receivable in the female connector.
  • the first connector 12 can be a male connector and the second connector 14 can be a female connector.
  • the lever 16 is mounted to the first connector 12 and arranged to shift or pivot from the pre-mate to the mated connector in the direction of arrow A.
  • the lever actuator 16 is a generally "U" shaped structure having a pair of end portions 20 and a center connecting portion 34 that connects the two end portions.
  • Each end portion 20 includes a pivot element 36 and the cam projections 18.
  • the center connector portion 34 further includes the previously described latch 24.
  • the lever 16 is pivotally mounted to the first connector 12 by the pivot element 36 being received in a key-hole slot 38, and in particular, a pivot opening 39 formed in a side wall portion 40 of the first connector wall 30.
  • the pivot element 36 and pivot opening 39 allow for pivotal movement of the lever 16.
  • the cam projection 18 includes one or more discrete predetermined force transmitting engagement portions 42 that are configured to transmit a leveraged force upon pivoting of the lever 16 to either mate or un-mate the first connector 12 and the second connector 14.
  • the connector assembly 10 includes an engagement system for retaining the actuating lever 16 in the pre-mate position to minimize any re-alignment prior to mating the connectors.
  • the engagement system blocks shifting of the lever 16 in the mating direction A via a blocking portion 50 of the first connector housing wall 30.
  • the blocking portion 50 is in the form of a resilient lever stop projection or tab that extends inwardly to a cavity formed by the first connector housing wall 30 as best illustrated in FIGS. 4 , 5 , and 6 .
  • the blocking portion 50 includes a thin wall extension or a resilient tab 52 that extends inwardly to the cavity formed by the connector wall 30.
  • the blocking portion 50 is configured to prevent shifting of the lever 16 in direction A ( FIG.
  • the housing wall 32 of the second connector 14 preferably includes a release portion 54 that extends outwardly from a side wall portion 56 of the second connector wall 32.
  • the release portion 54 is positioned so that upon the second connector 14 being inserted into the first connector 12, the release portion 54 shifts the blocking portion 50 from its blocking or first position to a clearance or second position to permit movement of the lever 16.
  • the release portion 54 includes a lead-in cam surface 58 at the front of the release portion 54 that is configured to cammingly engage the blocking portion 50 and shift it to the clearance position upon the second connector 14 being initially inserted into the first connector 12.
  • the second connector 14 is brought into initial engagement with the first connector 12 to release the blocking portion 50 as best illustrated in FIGS. 7-12 .
  • the release portion 54 on the second connector 14 enters the first connector 12 and the lead-in cam surface 58 of the release projection 54 shifts or deflects the resilient lever stop projection 50 out of engagement with the flat portion of the cam projection is and, therefore, allows the lever actuator 16 to be pivoted in the mating direction A.
  • FIGS. 7-12 the release portion 54 on the second connector 14 enters the first connector 12 and the lead-in cam surface 58 of the release projection 54 shifts or deflects the resilient lever stop projection 50 out of engagement with the flat portion of the cam projection is and, therefore, allows the lever actuator 16 to be pivoted in the mating direction A.
  • the lead-in cam surface 58 is inclined so that it cammingly engages a corresponding cam surface 60 on the blocking portion 50 to resiliently shift the blocking portion outwardly in the direction of arrow B ( FIG. 12 ).
  • the lever 18 is free to shift or pivot in the mating direction A ( FIG. 2 ) to linearly advance the second connector 14 into a mating relationship with the first connector 12.
  • the releasing projection 54 further includes a receiving pocket 61 that is sized to receive the blocking portion 50 once it shifts back to its original position as best shown in FIGS. 8 and 12 .
  • the receiving pocket 61 permits the blocking portion to generally be unstressed or unbiased when the connectors 12 and 14 are fully connected.
  • the lever actuator 16 is pivoted by a user so that the cam projection 18 on the actuating lever 16 engages the cam groove 22 in the second connector 12 to linearly advance or urge the second connector 14 into the first connector 12 using a predetermined leveraged mechanical advantage provided by the lever actuator.
  • linearly advancement is achieved via the mechanical advantage obtained from the one or more predetermined force transmitting engagement portions 42 positioned on the lever actuator 16 and, in particular, positioned on the cam projection 18 thereof.
  • the cam groove 22 is a straight groove or pocket, but it may alternatively take a curvilinear, angled, or stepped shape as well as other forms depending on the force requirements needed to engage and disengage the connectors.
  • the cam projection includes one or more predetermined force transmitting engagement portions 42. More specifically, the cam projection 18 preferably includes at least one mating predetermined force transmitting engagement portion 62 on one side of the cam projection 18 and at least two un-mating predetermined force transmitting engagement portions 68 and 70 on an opposite side of the cam projection 18. Depending on the force requirements, however, more or less engagement portions may also be provided. Each predetermined force transmitting engagement portion is configured to provide a discrete, leveraged mating or un-mating force upon engagement with a surface of the cam groove 22 during pivoting of the lever actuator 16.
  • each engagement portion 62, 68, and/or 70 is in the form of a protrusion, knuckle, or other extension of the cam projection 18 that is positioned to engage the walls of the cam groove 22 generally without other surfaces of the cam projection 18 contacting the cam groove.
  • the cam protrusion 18 includes the mating predetermined force transmitting engagement portion 62 positioned on the outer surface of the cam protrusion 18 a predetermined distance C from the pivot element 36 so that a predetermined leverage ratio LR1 is formed in relation to a predetermined distance D from the pivot element 36 to a user or force-input end 64 of the lever 16.
  • the leverage ratio LR1 i.e., D:C
  • the leverage ratio LR1 is provided that permits the lever actuator 16 to provide a mating force of at least about 300 N derived from a user input force of less than about 75 N.
  • the leverage ratio LR1 is at least about 7:1 where the distance D is about 7X the distance C.
  • the distance C is about 6.6 mm and the distance D is about 48.2 mm to provide a leverage ratio LR1 of about 7.3:1.
  • the cam projection 18 includes at least one un-mating predetermined force transmitting engagement portion 42 and, preferably, the cam projection 18 includes a pair of un-mating predetermined force transmitting engagement portions 42 (i.e., the protrusions 68 and 70).
  • the lever 16 is configured to provide a sequential, dual stage leveraged output force upon applying substantially the same user input force to the force-input end 64 of the lever 16 during un-mating of the connector 10 (i.e., direction arrow H in FIG. 1 ).
  • the cam projection 18 includes a first un-mating force transmitting engagement portion 68 dimensioned relative to the force-input end 64 and pivot element 36 to provide an initial un-mating stage that generates a high level of output force.
  • the cam projection 18 also includes a second un-mating force transmitting engagement portion 70 dimensioned a different distance relative to the force-input end 64 and pivot element 36 to provide a subsequent or second un-mating stage generating a lower lever of output force. In both stages of un-mating, the high and low level of output force is achieved upon a user applying substantially the same amount of input force to the force-input end 64 of the lever actuator 16.
  • the first un-mating predetermined force transmitting engagement portion 68 is positioned a predetermined distance E from the pivot element 36 so that a predetermined leverage ratio LR2 is formed in relation to a predetermined distance F from the pivot element 36 to the user or force-input end 64 of the lever 16.
  • a predetermined leverage ratio LR2 i.e., F:E
  • F:E the leverage ratio LR2
  • the leverage ratio LR2 is at least about 8:1 where the distance F is at least about 8X the distance E.
  • the distance E is about 5.7 mm and the distance F is about 50.5 mm to provide a leverage ration LR2 of about 8.8:1.
  • This initial high level of un-mating force is beneficial in order to overcome the high frictional forces holding the connector housing together and the combined frictional forces holding the 90 or greater electrical connectors together.
  • the lever cam projection 18 provides the second un-mating predetermined force transmitting engagement portion 70 positioned a different distance from the pivot element 36 than the first engagement portion 68.
  • the cam projection 18 switches from the first stage (high level) to the second stage (low level) of un-mating where the same or less input force continues to un-mate the connectors with a lower lever of un-mating force.
  • the second un-mating predetermined force transmitting engagement portion 70 is positioned a longer, predetermined distance G from the pivot element 36 so that a second, un-mating predetermined leverage ratio LR3 is formed in relation to the predetermined lever un-mating arm distance F to provide the lower level of output force.
  • the leverage ratio LR3 (i.e., F:G) that permits the lever actuator 16 to providing a subsequent, lower level of un-mating force for the second or subsequent stage of un-mating (i.e., an un-mating force less than about 300 N) derived from the same user input force of less than about 75 N
  • the second stage of an un-mating leverage ratio LR3 is at least about 5:1 where the distance F is at least about 5X the distance G.
  • the distance G is about 8.9 mm and the distance F is about 50.5 mm to provide a leverage ratio LR3 of about 5.6:1.
  • such dual stage un-mating is advantageous because it permits an initial, high level of un-mate force to overcome the higher frictional and engagement forces holding the first and second connectors 12 and 14 together (including the forces holding the 90 or greater pin contacts together), but allows a subsequent, lower level of un-mating force to be applied upon further disengagement of the connectors 12 and 14 when such higher force levels are generally not needed because the frictional and engagement forces are lower.
  • the initial frictional forces holding this large number of connectors is much larger than the prior connectors that having less than half the number of contacts.
  • the lever designs of the prior connectors generally can not efficiently mate and un-mate the large connector with input forces less than 75 N as generally required by automotive industry standards.
  • FIG. 15 shows the cam projection 18 and cam groove 22 in the pre-mate position where a distal end 72 of the cam projection 18 engages an abutment edge or surface 74 of the cam groove 22.
  • the abutment edge 74 of the cam groove 22 is a surface defining one boundary of the cam groove or pocket 22 that extends generally orthogonal to the linear insertion direction I ( FIG. 15 ) of the connectors 12 and 14.
  • the abutment edge 74 generally includes a stop portion 76 that is positioned to provide a hard stop to the insertion of the cam projection 18 as best shown by the engagement of cam projection distal end 72 against the abutment edge 74 in FIG. 15 .
  • the user is signaled that the pre-mate position has been achieved and that further mating can be accomplished via shifting or pivoting of the lever actuator 16 because the cam projection 18 is positioned for engagement with the cam groove 22.
  • FIG. 16 shows the lever actuator 16 shifted or pivoted about 20° into the mate sequence where the mating predetermined force transmitting engagement portion 62 engages a drive edge 78 of the cam groove 22.
  • the drive edge 78 of the cam groove 22 is on the opposite side of the groove 22 from the abutment edge 74 and provides a drive surface for the mating predetermined force transmitting engagement portion 62 to apply a leveraged force thereto to advance the second connector 14 in a mating engagement with the first connector 12.
  • FIG. 17 shows the lever actuator 16 shifted or pivoted about 40° into the mate sequence where the same mating predetermined force transmitting engagement portion 62 is still engaging the drive edge 78 for continued urging of the connectors 12 and 14 together.
  • FIG. 18 shows the cam projection 18 and the cam groove 22 is this fully mated position where the second connector 14 is fully received with the first connector 12.
  • opposing flats 80 and 82 on opposite sides of the cam projection 18 help secure the cam projection 18 in this mated position. That is, for example, flat 80 abuts against the drive surface 78 and flat 82 abuts against the abutment surface 74.
  • the latch member 24 on the center connecting portion 34 of the lever actuator 16 engages a cooperative lock member 26 on the first housing 12 to secure the lever actuator 16 in the second position.
  • the cam projection 18 is preferably configured to have a single or discrete engagement portion that contacts the cam groove drive surface 78.
  • the single engagement portion contacts this drive surface throughout the mating sequence to provide a discrete and constant level of leveraged mating force.
  • This single engagement portion is in contrast to prior connectors that include engagement surfaces or curved cam portions that provide a rolling or variable engagement between the cam and groove during the mating sequence, which also provide a variable amount of mating force depending on the position of the various cam surfaces.
  • the single engagement portion during mating provides a constant and increased level of mating force suitable to mate the above described large connectors.
  • the single predetermined engagement portion 62 contacts the drive surface 78 during the mating sequence because the cam projection 18 preferably includes a valley or undercut corner area 84 adjacent the engagement portion 62.
  • the predetermined positioning of the undercut corner 84 adjacent the knuckle 62 is selected, so that during the mating sequence, generally only the portion 62 contacts the drive surface 78 to provide the desired mating force rather than other portions of the cam projection 18. Indeed, if the undercut corner area 84 was not present, other undesired areas of the projection 18 may contact the drive surface and less than the desired mating force could be obtained.
  • the cam projection 18 preferably includes a truncated corner or flat edge 86 adjacent the distal end 72 and generally extending between the distal end 72 and the engagement portion 62. This flat surface 86 is positioned to permit the cam projection 18 to more easily slide across and clear an upper edge 88 of the release projection 54 with little or no frictional engagement upon the initial insertion of the second connector 14 into the first connector 12. In this manner, the cam projection 18 is configured to linearly advance along the upper surface 88 of the release projection 54 with little or no interference in order to reach the cam groove 22.
  • the lever actuator 16 must first be unlatched from the lock member 26 by depressing the resilient tab 28 to provide clearance for the reverse shifting or pivoting of the lever actuator 16. Thereafter, the lever actuator 16 is free to move in an un-mating direction H ( FIG. 1 ) by shifting or pivoting the lever actuator 16 in the un-mating direction. With such reverse motion of the lever actuator 16, the interaction between the cam groove 22 and the cam projection 18 urges or linearly separates the first connector 12 and the second connector 14 allowing the connectors to be unmated. As further described below, it is preferred to employ the dual stage un-mating sequence with an initial high level of un-mating force and a subsequent lower level of un-mating force to accomplish the un-mating of the connectors 12 and 14.
  • FIGS. 20 and 21 the dual-stage un-mating sequence is illustrated in more detail.
  • the cam projection 18 is shifted by an amount so that the first un-mating force transmitting engagement portion 68 contacts the abutment surface 74 to provide the first stage of un-mating force.
  • this first un-mating engagement portion 68 is positioned to provide a high level of un-mating force to overcome the initial frictional and engagement forces between the connectors 12 and 14.
  • the second un-mating force transmitting engagement portion 70 is spaced from the first engagement portion and not contacting the groove walls as shown in FIG. 20 .
  • the cam projection 18 reaches the general position illustrated in FIG. 21 , which is about 40° into the un-mate sequence.
  • the second un-mating force transmitting engagement portion 70 now contacts the abutment surface 74.
  • this second un-mating engagement portion 68 is positioned to provide a lower level of un-mating force.
  • the first engagement portion 68 is spaced from the second engagement portion 70 and not contacting the groove walls as best shown in FIG. 21 .
  • the lever reaches the pre-mate position of FIG. 15 , where the first and second connectors can then be manually separated.
  • the connector 10 is now ready to be re-assembled following the mating procedures previously described.
  • the un-mating sequence is configured to provide discrete leveraged forces. During un-mating, however, it is preferred that at least two discrete and constant un-mating forces supplied via the dual stage un-mating sequence be employed. This dual-stage leveraged force is also in contrast to the variable un-mating forces achieved from prior art camming surfaces that employ curved surfaces.
  • the cam projection 18 further includes an inclined surface 90 extending toward the cam projection distal end 72 between the first and second un-mating force transmitting engagement portions 68 and 70, respectively.
  • the inclined surface 90 is angled so that upon pivoting of the lever actuator 16, the cam projection 18 is permitted to rotate within the cam groove 22 and also permits either the first or second un-mating force transmitting engagement portion 68 or 70 to separately engage the abutment surface 74 in order to provide the discrete and constant un-mating forces.
  • the inclined surface 90 is angled ⁇ about 20 to about 30° relative to an upper surface 92 of the cam projection 18.
  • the connector assembly 10 and actuator lever 16 are configured to provide a more robust assembly that is suitable to mate and un-mate large electrical connectors that include 90 or more pin contacts. It will be appreciated, however, that while the assembly 10 is particularly preferred for such large connectors, the connector assembly 10 and lever 16 are also suitable for connector configurations with more or less pin contacts. It will be further understood that the electrical connectors may be embodied in other specific forms without departing from the subject matter of claim 1. The present examples and embodiments, therefore, are to be considered in all respects as illustrative and not restrictive, and the electrical connector is not to be limited to the details given herein.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Claims (15)

  1. Ensemble de connecteur électrique (10), comprenant :
    des premier et deuxième connecteurs électriques comprenant des premier (12) et deuxième (14) boîtiers de connecteur respectifs destinés à être accouplés l'un à l'autre ;
    un levier d'actionnement (16) monté sur le premier connecteur électrique de façon à être déplacé afin d'accoupler les connecteurs l'un à l'autre, le levier d'actionnement comportant une première position prédéterminée avec les connecteurs désaccouplés et une deuxième position prédéterminée avec les connecteurs complètement accouplés ;
    une saillie de came (18) du levier d'actionnement (16) ;
    une rainure de came (22) du deuxième connecteur, la saillie (18) et la rainure (22) de came étant configurées de façon à venir en prise de telle sorte que le déplacement du levier d'actionnement (16) de la première position à la deuxième position provoque l'accouplement complet des connecteurs l'un avec l'autre ;
    une partie de prise de transmission de force prédéterminée (42) du levier d'actionnement (16) au niveau de laquelle le levier d'actionnement vient en prise avec le deuxième connecteur (14) de façon à transmettre une force de sortie avec effet de levier à celui-ci avec un pivotement du levier d'actionnement de la position de libération à la position de verrouillage,
    caractérisé par :
    une partie de blocage (50) formée sur le premier boîtier de connecteur (12) et s'étendant à l'intérieur du premier boîtier de connecteur en interférence avec la saillie de came (18) pour un maintien libérable du levier d'actionnement (16) dans la première position ;
    une partie de libération (54) formée sur le deuxième boîtier de connecteur (14), pouvant agir de façon à déplacer la partie de blocage (50) vers l'extérieur vers une position d'espacement de façon à permettre au levier d'actionnement (16) d'être déplacé de la première position à la deuxième position avec la saillie de came (18) reçue dans la rainure de came (22).
  2. Ensemble de connecteur électrique (10) selon la revendication 1, dans lequel la partie de blocage (50) et la partie de libération (54) comprennent des surfaces de came coopérantes (58, 60) qui viennent en prise par effet de came l'une avec l'autre de façon à déplacer la partie de blocage (50).
  3. Ensemble de connecteur électrique (10) selon la revendication 1 ou 2, dans lequel la partie de blocage (50) comprend une partie de paroi mince du premier connecteur.
  4. Ensemble de connecteur électrique (10) selon l'une des revendications précédentes, dans lequel la partie de blocage (50) comprend une partie élastique du premier connecteur.
  5. Ensemble de connecteur électrique (10) selon l'une des revendications précédentes, dans lequel ladite partie de blocage (50) est voisine de la saillie de came (18) sur une surface intérieure du premier boîtier de connecteur et la partie de libération (54) est voisine de la rainure de came (22) sur une surface extérieure du deuxième boîtier de connecteur.
  6. Ensemble de connecteur électrique (10) selon l'une des revendications précédentes, dans lequel les boîtiers de connecteur (12, 14) comportent des contacts adaptés de façon à venir en prise par frottement entre eux afin d'établir une connexion électrique entre eux.
  7. Ensemble de connecteur électrique (10) selon l'une des revendications précédentes, dans lequel un rapport d'effet de levier prédéterminé est défini par la division d'une première distance fixe supérieure prédéterminée entre la partie de prise de transmission de force du levier d'actionnement (16) et la liaison de pivot par une deuxième distance inférieure prédéterminée entre la partie de prise de transmission de force du levier d'actionnement (16) et la liaison de pivot, le rapport d'effet de levier restant sensiblement constant durant le pivotement du levier d'actionnement (16) de la position de libération à la position de verrouillage.
  8. Ensemble de connecteur électrique (10) selon la revendication 7, dans lequel le rapport d'effet de levier prédéterminé est suffisant pour que la force d'actionnement soit d'approximativement 75 N ou moins, la force de sortie d'effet de levier générée par le rapport d'effet de levier prédéterminé étant d'au moins approximativement 300 N.
  9. Ensemble de connecteur électrique (10) selon les revendications 7 ou 8, dans lequel le levier d'actionnement (16) comporte une extrémité distale (72) opposée à l'extrémité d'entrée de force et la partie de prise de transmission de force (42) du levier d'actionnement (16) comprend une saillie (68, 70) à l'extrémité distale (72), et le deuxième connecteur (14) comporte une poche comprenant une surface d'entraînement contre laquelle vient en prise la saillie de façon à provoquer le coulissement des connecteurs dans une direction linéaire l'un par rapport à l'autre avec le pivotement du levier d'actionnement (16).
  10. Ensemble de connecteur électrique (10) selon la revendication 9, dans lequel la poche comprend des surfaces en coin, avec l'une des surfaces en coin qui constitue la surface d'entraînement, et l'extrémité distale (72) du levier d'entraînement comporte une zone de coin entaillée (82) au voisinage de la saillie de façon à produire un espacement, de telle sorte que seule la saillie de l'extrémité distale (72) du levier d'actionnement vienne en prise avec la surface d'entraînement de poche, de façon à transmettre la force de sortie d'effet de levier à celle-ci lorsque que le levier d'actionnement (16) pivote de la position de libération à la position de verrouillage.
  11. Ensemble de connecteur (10) selon les revendications 9 ou 10, dans lequel la poche comprend une surface de butée qui est opposée à la surface d'entraînement à travers la poche, et qui s'étend de façon globalement orthogonale à la direction linéaire, de telle sorte qu'avec le levier d'actionnement (16) dans la position de libération, un coulissement linéaire relatif des connecteurs (12, 14) l'un vers l'autre de façon à permettre au levier d'actionnement (16) de verrouiller les connecteurs entre eux provoque la venue en prise de l'extrémité distale (72) du levier d'actionnement contre la surface de butée sans provoquer le pivotement du levier d'actionnement (16) vers la position de verrouillage de celui-ci.
  12. Ensemble de connecteur (10) selon l'une des revendications 7 à 11, dans lequel le levier d'actionnement (16) comporte deux parties de prise de transmission de force prédéterminée additionnelles (42) qui viennent en prise de façon séquentielle et transmettent une force de sortie d'effet de levier à double étape au deuxième connecteur (14), avec une étape initiale générant un niveau élevé de force de sortie et une étape suivante générant un niveau inférieur de force de sortie avec la même force d'actionnement appliquée à l'extrémité d'entrée de force pour faire pivoter le levier d'actionnement (16) de la position de verrouillage à la position de libération.
  13. Ensemble de connecteur (10) selon la revendication 12, dans lequel les deux parties de prise de transmission de force prédéterminée additionnelles (42) sont à des distances différentes fixes prédéterminées vis-à-vis de la liaison de pivot, de façon à produire deux rapports d'effet de levier prédéterminés différents qui restent tous deux sensiblement constants durant des étapes correspondantes de pivotement du levier d'actionnement (16) de la position de verrouillage à la position de libération.
  14. Ensemble de connecteur (10) selon l'une des revendications 7 à 13, dans lequel le premier connecteur (12) comporte un cliquet pour maintenir de façon libérable le levier d'actionnement (16) dans la position de libération.
  15. Ensemble de connecteur (10) selon la revendication 14, dans lequel le cliquet comporte une partie élastique du premier connecteur, et
    des surfaces de came de la partie élastique et du deuxième connecteur (14) qui coopèrent de façon à déplacer la partie élastique vers une position d'espacement avec un coulissement suffisant des connecteurs (12, 14) l'un vers l'autre pour permettre un pivotement du levier d'actionnement (16) entre les positions de libération et de verrouillage de celui-ci.
EP07809405A 2006-06-08 2007-06-08 Connecteur électrique du type à levier Active EP2059979B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US81194306P 2006-06-08 2006-06-08
PCT/US2007/013519 WO2007146130A2 (fr) 2006-06-08 2007-06-08 Connecteur électrique du type à levier

Publications (3)

Publication Number Publication Date
EP2059979A2 EP2059979A2 (fr) 2009-05-20
EP2059979A4 EP2059979A4 (fr) 2010-07-07
EP2059979B1 true EP2059979B1 (fr) 2012-12-12

Family

ID=38832409

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07809405A Active EP2059979B1 (fr) 2006-06-08 2007-06-08 Connecteur électrique du type à levier

Country Status (3)

Country Link
EP (1) EP2059979B1 (fr)
CN (1) CN101501938B (fr)
WO (1) WO2007146130A2 (fr)

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WO2019086070A1 (fr) * 2017-11-06 2019-05-09 Harting Electric Gmbh & Co. Kg Boîtier de connecteur électrique doté d'un étrier de verrouillage pivotant

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US8414315B2 (en) * 2008-05-06 2013-04-09 Molex Incorporated Lever type electrical connector
DE102010039706A1 (de) * 2010-08-24 2012-03-01 Tyco Electronics Amp Gmbh Elektrischer Steckverbinder
FR2966649B1 (fr) * 2010-10-26 2013-06-28 Tyco Electronics France Sas Connecteur a engagement sur
JP2012238498A (ja) * 2011-05-12 2012-12-06 Sumitomo Wiring Syst Ltd レバー式コネクタ
WO2018192624A1 (fr) 2017-04-21 2018-10-25 Harting Electric Gmbh & Co. Kg Dispositif formant boîtier de montage et procédé de déverrouillage
DE102017128352A1 (de) * 2017-11-30 2019-06-06 HARTING Electronics GmbH LED-Panel mit Steckverbindern
DE102018121399A1 (de) * 2018-09-03 2020-03-05 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Elektrischer Steckverbinder und Steckverbindung, Hochvoltsystem und Verfahren zum Verriegeln einer elektrischen Steckverbindung
CN109546445B (zh) * 2018-12-07 2023-10-20 沈阳兴华航空电器有限责任公司 一种电动汽车高压连接器的锁紧装置及锁紧方法

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KR200318478Y1 (ko) * 2003-04-02 2003-06-27 한국몰렉스 주식회사 이중 록킹구조를 갖는 차량용 커넥터 조립체

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Publication number Priority date Publication date Assignee Title
WO2019086070A1 (fr) * 2017-11-06 2019-05-09 Harting Electric Gmbh & Co. Kg Boîtier de connecteur électrique doté d'un étrier de verrouillage pivotant
US11336055B2 (en) 2017-11-06 2022-05-17 Harting Electric Gmbh & Co. Kg Locking clip for an electrical connector housing

Also Published As

Publication number Publication date
CN101501938B (zh) 2012-07-18
WO2007146130B1 (fr) 2008-06-12
EP2059979A4 (fr) 2010-07-07
EP2059979A2 (fr) 2009-05-20
CN101501938A (zh) 2009-08-05
WO2007146130A3 (fr) 2008-04-24
WO2007146130A2 (fr) 2007-12-21

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