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EP3171459A1 - Elektrischer verbinder mit anschlusspositionsbestätigungsvorrichtung - Google Patents

Elektrischer verbinder mit anschlusspositionsbestätigungsvorrichtung Download PDF

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Publication number
EP3171459A1
EP3171459A1 EP16199420.7A EP16199420A EP3171459A1 EP 3171459 A1 EP3171459 A1 EP 3171459A1 EP 16199420 A EP16199420 A EP 16199420A EP 3171459 A1 EP3171459 A1 EP 3171459A1
Authority
EP
European Patent Office
Prior art keywords
terminal
electrical
locking
tpa device
internal cavity
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.)
Withdrawn
Application number
EP16199420.7A
Other languages
English (en)
French (fr)
Inventor
Jeffrey Scott Campbell
Wesley W. WEBER Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Publication of EP3171459A1 publication Critical patent/EP3171459A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/436—Securing a plurality of contact members by one locking piece or operation
    • H01R13/4361—Insertion of locking piece perpendicular to direction of contact insertion
    • H01R13/4362—Insertion of locking piece perpendicular to direction of contact insertion comprising a temporary and a final locking position
    • 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
    • H01R13/46—Bases; Cases
    • H01R13/502—Bases; Cases composed of different pieces
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/424—Securing in base or case composed of a plurality of insulating parts having at least one resilient insulating part
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/46—Bases; Cases
    • 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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2201/00—Connectors or connections adapted for particular applications
    • H01R2201/26—Connectors or connections adapted for particular applications for vehicles

Definitions

  • the invention relates to electrical connectors, and more particularly relates to an electrical connector including a terminal position assurance device having two sets of terminal locking features.
  • Electrical terminals locked into a connector housing are subject to retention strength performance issues, especially with the smaller size categories of terminals (e.g. less than 2.8 mm). These smaller terminals historically have used scaled down locking features, which inherently have reduced locking retention strength and allow excessive terminal float. An excessively floating terminal can stub during mating, resulting in the terminal pushing out, and/or terminal damage especially if the retention strength within the connector housing is low. Within the automotive industry, inadequately locked terminals which pull out or push out, are recognized as the second highest root cause for failure of electrical connector systems within the vehicle warranty period.
  • Electrical connectors typically comprise internal cavities that are intended to accommodate electrical (male and/or female) terminals inserted from a rear face of the electrical connector. To ensure a well and safe functioning of the connector, it has to be ensured that the electrical terminals are locked in place within the electrical connector.
  • a solution known in the art includes providing a primary locking feature in form of a resilient retaining shoulder for preventing rearward withdrawal of the electrical terminals.
  • the retaining shoulder which is formed in the electrical connector, is designed to make a snap fit into a corresponding recess of the electrical connector at the end of the insertion of the electrical connector.
  • a flexible retaining member is thereby disposed contiguously between the internal cavity and a slot, into which the retaining member can deflect.
  • the retaining shoulder is formed on the face of the flexible retaining member that communicates with the internal cavity, such that on inserting the electrical terminal into the internal cavity, the retaining member first deflects in the slot before the retaining shoulder engages the recess of the electrical terminal.
  • the secondary locking mechanism known in the art requires a locking member being inserted frontward of the electrical connector in the direction opposite to that of the insertion of the electrical terminal.
  • the configuration of the electrical connector may be such that a frontward insertion of the locking member is not possible, e.g. because there is not enough space at the front face side.
  • the retaining members in connectors used with smaller terminals may easily buckle, terminal tangs may bend, and secondary locking mechanism may provide limited additional strength due to packaging constraints with terminals smaller than 2.8 mm.
  • an electrical connector in accordance with an embodiment of the invention, includes a first electrical terminal, a second electrical terminal and a connector housing defining a first internal cavity and a second internal cavity. Each cavity extends along a longitudinal axis from a first face of the connector housing to a second face of the connector housing.
  • the first and second internal cavities are configured to receive the first and second electrical terminals respectively.
  • the connector housing further defines a third internal cavity extending along a lateral axis transverse to the longitudinal axis.
  • the third internal cavity is in communication with the first and second internal cavities.
  • the electrical connector further includes a terminal position assurance (TPA) device configured to be received within the third internal cavity.
  • TPA terminal position assurance
  • the TPA device is moveable from a terminal insertion position within the third internal cavity to a terminal locking position.
  • the TPA device has flexible first and second primary locking features that are configured to engage corresponding locking surfaces of the first and second electrical terminals respectively.
  • the primary locking features are effective to secure the first and second electrical terminals within the first and second internal cavities respectively when the TPA device is in the terminal insertion position within the third internal cavity.
  • the TPA device also has rigid first and second secondary locking features.
  • the second secondary locking feature and the first and second primary locking features are configured to engage the locking surface of the second electrical terminal effective to secure the second electrical terminal within the second internal cavity when the TPA device is in the terminal locking position.
  • the first and second primary locking features engage distal portions of the locking surface of the second electrical terminal and the second secondary locking feature engages a mesial portion of the corresponding locking feature of the second electrical terminal.
  • only the first primary locking feature and the first secondary locking feature is engaged with the locking surface of the first electrical terminal to secure the first electrical terminal within the first internal cavity when the TPA device is in the terminal locking position.
  • the first primary locking feature may engage a distal portion of the locking surface of the first electrical terminal and the first secondary locking feature engages a mesial portion of the locking surface of the first electrical terminal.
  • the first secondary locking feature may further engage another distal of the locking surface of the first electrical terminal.
  • the TPA device is configured to move from the terminal insertion position to the terminal locking position along the lateral axis and move transversely relative to the longitudinal axis.
  • the TPA device is configured to be inserted in the third internal cavity transversally to the first and second internal cavities through a lateral opening defined by the connector housing.
  • Each primary locking feature comprises a flexible beam that is attached at one end to a cross bar of the TPA device.
  • a free end of the flexible beam defines a first lock shoulder.
  • Each secondary locking feature of the TPA device defines a rigid second lock shoulder defined by the cross bar of the TPA device.
  • the first lock shoulder of the flexible beam engages the locking surface of the corresponding electrical terminal when the TPA devices is in the terminal insertion position and in the terminal locking position.
  • the second lock shoulder engages the locking surface of the corresponding electrical terminal when the TPA devices is in the terminal locking position.
  • an electrical connector including a moveable terminal position assurance (TPA) device.
  • the TPA device secures the contacts or terminals of the connector within cavities in the connector housing once the terminals are fully inserted within the housing.
  • the TPA device incorporates a flexible primary lock finger to engage a lock ridge of a terminal thus locating and securing the terminal within a cavity as the terminal is inserted into the cavity while the TPA device is in a terminal insertion position. After insertion of all the terminals into the cavities of the connector housing, the TPA device is moved to a terminal locking position. This movement to the terminal locking position engages a rigid secondary lock on the TPA device with the lock ridge of the terminal in addition to the primary lock finger to further secure the terminal within the cavity.
  • a connector housing 14 of the electrical connector 10 has a first internal cavity 16a, hereinafter referred to as a terminal cavity 16a that extends along a longitudinal axis X of the connector housing 14 from an opening 18a in a first face 20, hereinafter referred to as an insertion end 20, of the connector housing 14 to an opening 22a into an integral socket 24 in a second face 26, hereinafter referred to as a mating end 26, of the connector housing 14.
  • the connector housing 14 has a second internal cavity 16b, hereinafter referred to as an adjacent terminal cavity 16b, that also extends along the longitudinal axis X from an opening 18b in the insertion end 20 to an opening 22b in the mating end 26.
  • the connector housing 14 also has third internal cavity 28 that extends along a lateral axis Y of the connector housing 14 that is transverse, or generally perpendicular, to the longitudinal axis X.
  • generally perpendicular is ⁇ 10° of absolutely perpendicular.
  • This third internal cavity 28 defines an opening 30 in a lateral wall 32 of the connector housing 14 that is configured to receive a terminal position assurance (TPA) device 34 that is configured to secure electrical terminals 36a, 36b within the terminal cavities 16a, 16b once the terminals 36a, 36b are fully inserted within the terminal cavities 16a, 16b.
  • TPA terminal position assurance
  • the TPA device 34 is formed of a dielectric material, such as polyamide, polypropylene, or polybutylene terephthalate. At least one wall 38 of the terminal cavities 16a, 16b is open to and in communication with the third internal cavity 28, hereinafter referred to as a TPA cavity 28.
  • the TPA device 34 is movable within the TPA cavity 28 from an terminal insertion position 39 in which the TPA device 34 is disposed before the terminal 36 is inserted into the terminal cavity 16 to a terminal locking position 41 in which the TPA device 34 is disposed after the terminal 36 is fully inserted within the terminal cavity 16.
  • the TPA device 34 includes flexible primary locking features 40a, 40b and rigid secondary locking features 42a, 42b each configured to secure the terminals 36a, 36b within the terminal cavities 16a, 16b.
  • the secondary locking features 42a, 42b are laterally adjacent the primary locking features 40a, 40b respectively.
  • the TPA device 34 and the TPA cavity 28 are configured to that the TPA device 34 slides laterally within the TPA cavity 28.
  • the primary locking features 40a, 40b include flexible beams 44 that are attached at one end to the TPA device 34.
  • the flexible beams 44 extend along the longitudinal axis X.
  • An unattached end 50 of each flexible beam 44 defines a ramp 52 that slopes toward the insertion end 20 of the connector housing 14.
  • the ramp 52 leads to a first lock shoulder 54 that is preferably, but not necessarily, set at a slight back angle.
  • the primary locking features 40a, 40b are centered within the terminal cavities 16a, 16b when the TPA device 34 is in the terminal insertion position 39.
  • the secondary locking feature 42 of the TPA device 34 has a rigid second lock shoulder 56 defined by the TPA device 34. As best shown in Fig. 6B , the secondary locking features 42a, 42b are centered within the terminal cavities 16a, 16b when the TPA device 34 is in the terminal locking position 41.
  • a typical electrical terminals 36a, 36b which generally include a forward contact portion 60, an intermediate body portion 62, and a rearward attachment portion 64 for attaching the terminal 36 to the insulated conductor wire 66.
  • the body portion 62 leads to a locking surface 70.
  • the terminals 36a, 36b are inserted into the terminal cavities 16a, 16b through the openings 18a, 18b at the insertion end 20 of the connector housing 14 when the TPA device 34 is in the terminal insertion position 39. As best shown in Fig.
  • the body portion 62 when body portion 62 engages the ramp 52 of the flexible beam 44, the body portion 62 deflects the flexible beam 44 so that the ramp 52 of the flexible beam 44 rides over body portion 62 as the terminal 36 is further inserted within the TPA cavity 28.
  • the first lock shoulder 54 reaches the locking surface 70, the flexible beam 44 springs back to a generally undeflected position and the first lock shoulder of the flexible beam 44 engages the locking surface 70 of the terminal 36, inhibiting the terminal 36 from being pulled back out of the insertion end 20 of the connector housing 14.
  • the first lock shoulder is generally centered on the locking surfaces 70, i.e. the primary locking features 40a, 40b engage a mesial portion of the lock surfaces.
  • the TPA device 34 is laterally moved within the TPA cavity 28 from the terminal insertion position 39 to the terminal locking position 41.
  • the secondary locking features 42a, 42b are moved into the terminal cavities 16a, 16b so that the rigid second lock shoulder 56 now engages the locking surfaces 70 of the terminals 36a, 36b and is generally centered on the locking surfaces 70, i.e. the secondary locking features 42a, 42b engage a mesial portion of the locking surfaces 70.
  • the first primary locking feature 40a is moved laterally so that it now engages a distal portion of the locking surface 70 of the first terminal 36a.
  • the first primary locking feature 40a enters the adjacent terminal cavity 16 and engages a distal portion of the locking surface 70 of the second adjacent terminal 36b.
  • the second primary locking feature 40a is moved laterally it now engages an opposing distal portion of the locking surface 70 of the second terminal 36b.
  • Terminal cavity 16a as illustrated has only one adjacent terminal cavity 16b. Because there is only one adjacent cavity, primary locking features cannot enter terminal cavity 16a to engage a distal portion of the lock surface as described for adjacent terminal cavity 16b above. Therefore, to provide adequate securement, the secondary locking feature engages both the mesial portion of the lock surface and a distal portion of the lock surface.
  • the connector housing 14 includes multiple terminal cavities 16a, 16b, so the TPA device 34 is positioned in the terminal insertion position 39 where the primary locking feature 40 holds each terminal 36a, 36b within its terminal cavity 16 until all of the terminals 36 are inserted into the terminal cavities 16. Once all of the terminal cavities 16 are filled, the TPA device 34 is moved into the terminal locking position 41 so that the terminals 36 are held within the terminal cavities 16 by the secondary locking feature 42.
  • Each terminal 36a, 36b can be removed from its terminal cavity 16a, 16b by inserting a tool (not shown) into an access slot and depressing the primary locking feature 40a, 40b until the locking surface 70 is released by the first lock shoulder 54 when the TPA device 34 is in the terminal insertion position 39.
  • the TPA device 34 can also be adapted for use in the corresponding mating connector designed to contain male terminals.
  • an electrical connector 10 including a TPA device 34 is provided.
  • the TPA device 34 has the benefit of rigidly engaging a locking surface 70 of the terminals 36a, 36b when the secondary locking features 42a, 42b are engaged, fully locking the terminals 36a, 36b within the terminal cavities 16a, 16b.
  • the TPA device 34 also provides a reduction of positional float of the terminals 36a, 36b within the terminal cavities 16a, 16b which greatly improves the alignment of the terminals 36a, 36b within the connector housing 14 and reduces the chance of terminal push-out and/or terminal damage during connection with the corresponding mating connector.
  • the primary locking features 40a, 40b are only required to hold the terminals 36a, 36b within the terminal cavities 16a, 16b during the terminal insertion process, the primary locking features 40a, 40b may be designed to optimize the terminal insertion force without regard to final retention force since that is separately provided by the secondary locking features 42a, 42b.
  • the TPA device 34 is compatible with most polarized tangless ("clean body") defined by automotive OEMs as cavity compatible strategy terminals, e.g. Kaizen 0.64, Delphi MTS, OCS 1.5, OCS 2.8.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
EP16199420.7A 2015-11-18 2016-11-17 Elektrischer verbinder mit anschlusspositionsbestätigungsvorrichtung Withdrawn EP3171459A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US201514944883A 2015-11-18 2015-11-18

Publications (1)

Publication Number Publication Date
EP3171459A1 true EP3171459A1 (de) 2017-05-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP16199420.7A Withdrawn EP3171459A1 (de) 2015-11-18 2016-11-17 Elektrischer verbinder mit anschlusspositionsbestätigungsvorrichtung

Country Status (3)

Country Link
EP (1) EP3171459A1 (de)
JP (1) JP2017098222A (de)
CN (1) CN107026352A (de)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10784625B2 (en) 2018-10-31 2020-09-22 Yazaki Corporation Connector including fitting assuring component
US10826220B1 (en) 2019-09-25 2020-11-03 Lear Corporation Electrical connector having electrical terminal servicing feature
US10897103B1 (en) 2019-09-12 2021-01-19 Aptiv Technologies Limited Electrical connector with seal protection
US10923833B2 (en) 2019-06-14 2021-02-16 Aptiv Technologies Limited Reinforced female wire terminal
US10950967B2 (en) 2019-04-15 2021-03-16 Lear Corporation Electric terminal housing with a terminal lock
CN113036531A (zh) * 2021-03-04 2021-06-25 宣城立讯精密工业有限公司 一种锁紧结构及电连接器
US11217938B2 (en) 2019-10-17 2022-01-04 Yazaki Corporation Connector with backlash filling protrusion

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6653296B2 (ja) * 2017-08-04 2020-02-26 矢崎総業株式会社 コネクタ
JP6939400B2 (ja) * 2017-10-24 2021-09-22 株式会社オートネットワーク技術研究所 コネクタ、治具、及び端子のコネクタへの組み付け方法
US10446969B2 (en) * 2017-12-01 2019-10-15 Te Connectivity India Private Limited Electrical connector with terminal position assurance member
CN109546442B (zh) * 2018-11-29 2020-05-29 安徽江淮汽车集团股份有限公司 一种端子自动锁止的汽车线束插件
JP7398238B2 (ja) * 2019-10-17 2023-12-14 矢崎総業株式会社 コネクタ
CN110718793B (zh) * 2019-10-25 2020-11-27 浙江新宝汽车电器有限公司 一种防虚插的接插件结构
JP7431190B2 (ja) * 2021-03-25 2024-02-14 日本端子株式会社 電気コネクタ及びこれを備えた電気コネクタ対

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5830013A (en) * 1997-03-07 1998-11-03 Yazaki Corporation Electric connector
US6132252A (en) 1998-05-05 2000-10-17 Framatome Connectors International Electrical connector with locking of the contact terminals

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5830013A (en) * 1997-03-07 1998-11-03 Yazaki Corporation Electric connector
US6132252A (en) 1998-05-05 2000-10-17 Framatome Connectors International Electrical connector with locking of the contact terminals

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10784625B2 (en) 2018-10-31 2020-09-22 Yazaki Corporation Connector including fitting assuring component
US10950967B2 (en) 2019-04-15 2021-03-16 Lear Corporation Electric terminal housing with a terminal lock
US10923833B2 (en) 2019-06-14 2021-02-16 Aptiv Technologies Limited Reinforced female wire terminal
US10897103B1 (en) 2019-09-12 2021-01-19 Aptiv Technologies Limited Electrical connector with seal protection
US10826220B1 (en) 2019-09-25 2020-11-03 Lear Corporation Electrical connector having electrical terminal servicing feature
US11217938B2 (en) 2019-10-17 2022-01-04 Yazaki Corporation Connector with backlash filling protrusion
CN113036531A (zh) * 2021-03-04 2021-06-25 宣城立讯精密工业有限公司 一种锁紧结构及电连接器

Also Published As

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JP2017098222A (ja) 2017-06-01

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