WO2006055706A1 - Terminal having a protrusion for preventing incorrect insertion - Google Patents
Terminal having a protrusion for preventing incorrect insertion Download PDFInfo
- Publication number
- WO2006055706A1 WO2006055706A1 PCT/US2005/041675 US2005041675W WO2006055706A1 WO 2006055706 A1 WO2006055706 A1 WO 2006055706A1 US 2005041675 W US2005041675 W US 2005041675W WO 2006055706 A1 WO2006055706 A1 WO 2006055706A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- protrusion
- terminal
- frame
- housing
- cavity
- Prior art date
Links
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
- H01R13/422—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient 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
- H01R13/02—Contact members
- H01R13/10—Sockets for co-operation with pins or blades
- H01R13/11—Resilient sockets
- H01R13/113—Resilient sockets co-operating with pins or blades having a rectangular transverse section
-
- 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
- H01R13/64—Means for preventing incorrect coupling
- H01R13/642—Means for preventing incorrect coupling by position or shape of contact members
-
- 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
- H01R13/52—Dustproof, splashproof, drip-proof, waterproof, or flameproof cases
- H01R13/5205—Sealing means between cable and housing, e.g. grommet
- H01R13/5208—Sealing means between cable and housing, e.g. grommet having at least two cable receiving openings
Definitions
- Terminals formed from sheet metal are commonly used to connect individual electrical wires to housings that combine electrical wires into a connector.
- the terminals must be inserted into cavities within the housing in a particular orientation to match a mating piece in the housing.
- each terminal will typically have a protrusion or other asymmetric feature that is matched with a slot formed in the cavity.
- Figure 1 shows a prior art terminal 1 being correctly inserted (in the direction of insertion 10) into a cavity 5 formed in a housing 6.
- the frame of the terminal 1 is made from a single piece of sheet metal that is stamped and formed into a generally rectangular shape.
- This terminal 1 includes a crimping portion 11 that may be used to attach an electrical wire (not shown) to the terminal 1.
- Other terminals 1 may use soldering or other methods to secure the wire to the terminal 1.
- a protrusion 3 has been stamped from the sheet metal.
- the protrusion 3 has a leading side 27 and a trailing side 28.
- the protrusion 3 is sized and oriented to match with a slot 4 formed in a cavity 5 in the housing 6.
- the housing 6 may have a plurality of cavities 5 for accepting additional terminals 1.
- the terminal 1 When correctly oriented as shown in Figure 1, the terminal 1 may be inserted into the cavity 5 with little or no force to connect with a securing mechanism (not shown) housed within the cavity 5.
- the securing mechanism is a clip formed within the housing that snaps behind the frame of the terminal 1.
- Terminals 1 such as the one shown in Figure 1 may be used in applications requiring waterproof connectors.
- One is to individually waterproof each terminal 1 in what is commonly referred to as an individually-waterproofed-cell type connector, which is shown in Figures 2A and 2B.
- the other primary approach is to use a collectively- waterproofed type connector as shown in Figure 3.
- Figure 2A the terminal 1 has wire 22 crimped in the crimping portion.
- the sealing element 21 is attached to the wire 22.
- the sealing element 21 may be attached by crimping it onto the wire with a portion of the terminal 1, by using adhesives, or by any other method known in the art.
- the sealing element 21 is substantially cylindrical.
- the housing 6 may have a sealing piece 20 extending from it.
- the sealing piece 20 may be integrally formed with the housing (i.e. molded together), or it may be attached after manufacture.
- the sealing piece 20 shown in Figure 2A is a single block formed with through holes 25 that are sized to allow the terminal 1 pass through with minimal contact.
- some housings 6 have hollow cylinders extending from each cavity 5.
- the sealing element 21 which has a diameter larger than the width of the terminal 1, forms a seal with the sealing surface 23 inside the through hole 25.
- the sealing element 21 is typically rubber or some other elastomer, and the sealing piece 20 is typically plastic or resin, for example.
- FIG. 2B a closer view of an individually-waterproofed-cell type connector is shown.
- the terminal 1 in Figure 2B is similar to the terminal 1 in Figure 2A except that in Figure 2B, the terminal 1 has a tab 26 instead of a protrusion 3.
- the tab 26 performs the same function as the protrusion 3 shown in Figure 1.
- the tab 26 is generally only used as an alternative to a protrusion 3 when the terminal 1 is formed with sheet metal that is sufficiently thick to not cut or otherwise damage the sealing member 24 and to have sufficient mechanical strength.
- a collectively- waterproofed type connector is shown. Instead of individual sealing elements 21 as shown in Figure 2A, a collectively- waterproofed type connector uses a single sealing member 24 to seal against wires 22 connected to multiple terminals 1.
- the sealing member 24 seals against an inside surface of a sealing extension 29 of the housing 6.
- the sealing member 24 includes multiple through holes 25 that correspond to each cavity 5 in the housing 6.
- the through holes 25 are sized to be smaller than the terminal 1 and the attached wire 22.
- the material for the sealing member 24 is typically rubber or other elastomer that is sufficiently compliant to allow the terminal 1 to pass through without tearing. After the terminal 1 passes through the sealing member 24, the sealing member 24 seals against the wire 22.
- Figure 4 a cross section of a prior art terminal 1 is shown. In
- the terminal 1 is being incorrectly inserted into the cavity 5.
- the terminal 1 is oriented such that the protrusion 3 is on the opposite side of the slot 4, which is incorrect.
- the leading side 27 of the protrusion 3 contacts the housing 6. Because of the amount of interference D of the protrusion 3 with the housing 6, a normal force 12 is exerted on the protrusion 3, which is intended to prevent the incorrect insertion and alert the person or mechanism inserting the terminal 1 to the incorrect insertion.
- a common problem experienced with the two-sided protrusion 3 is that it may be insufficient for preventing incorrect insertion.
- a terminal 1 may be smaller than 2 mm. Accordingly, the sheet metal, from which terminal 1 is made, may be very thin. Enlarging protrusion 3 relative to the size of the terminal 1 increases interferences, which increases the resistance to incorrect insertion. However, because the protrusion is stamped from sheet metal, enlarging the protrusion 3 thins the wall of the protrusion 3, which reduces the mechanical strength of the protrusion 3. If the protrusion 3 is too weak, it will deform and allow the terminal 1 to be incorrectly inserted. This may occur regardless of the size of the terminal 1.
- the protrusion 3 is reduced in size relative to the terminal 1, it will be stronger. This, however, reduces the amount of interference D, which reduces the resistance to incorrect insertion. As a result, a person inserting the terminal 1 may accidentally force the terminal 1 into an incorrect orientation. If the smaller protrusion 3 is strong enough to not fail, it may instead damage the housing 6, which is typically made from a resin, plastic, or other material weaker than metal. This is as undesirable as a protrusion 3 that fails.
- the present invention relates to a terminal for preventing incorrect insertion into a housing.
- the terminal includes a frame that is adapted to be received into a cavity in the housing and a wire operatively connected to the frame.
- a protrusion which extends from the frame, includes a leading side, a top side, and a trailing side. The protrusion is configured to only allow a desired orientation of the terminal when inserted into the cavity.
- the frame and protrusion are formed from a single piece of sheet metal.
- the present invention relates to a method of correctly inserting a terminal into a housing of a connector.
- the method includes orienting the terminal such that a protrusion disposed on the terminal is aligned with a slot formed in a cavity in the housing and inserting the terminal into the cavity in the housing such that the protrusion passes through the slot.
- the terminal includes a frame adapted to be received into the cavity in the housing, a wire operatively connected to the frame.
- the protrusion, which extends from the frame includes a leading side, a top side, and a trailing side.
- the frame and protrusion are formed from a single piece of sheet metal.
- Figure 1 shows a perspective view of a prior art terminal being correctly inserted into a housing.
- Figure 2A shows a side view of a prior art terminal being correctly inserted into a cross section of a housing.
- Figure 2B shows a side view of a prior art terminal being correctly inserted into a cross section of a housing.
- Figure 3 shows a side view of a prior art terminal being correctly inserted into a cross section of a housing.
- Figure 4 shows a cross section of a prior art terminal being incorrectly inserted into a housing.
- Figure 5A shows a terminal having a protrusion in accordance with one embodiment of the present invention.
- Figure 5B shows a cross section of the protrusion shown in Figure 5A. The cross section is parallel to the direction of insertion.
- Figure 5C shows a cross section of the protrusion shown in Figure 5A.
- the cross section is perpendicular to the direction of insertion.
- Figure 6A shows a terminal having a protrusion in accordance with one embodiment of the present invention.
- Figure 6B shows a cross section of the protrusion shown in Figure 6A.
- the cross section is parallel to the direction of insertion.
- Figure 7A shows a terminal having a protrusion in accordance with one embodiment of the present invention.
- Figure 7B shows a cross section of the protrusion shown in Figure 7A.
- the cross section is perpendicular to the direction of insertion.
- the present invention provides a terminal for connecting a wire to a connector. More specifically, the terminal includes a protrusion designed to prevent incorrect insertion of the terminal into the housing of the connector.
- a problem with the typical prior art protrusion on terminals is that the two- sided shape is insufficiently self-supporting. As discussed above, when enlarged to increase interference and resistance to incorrect insertion, the protrusion becomes weak and susceptible to failure. When the protrusion is small to gain strength, it may provide insufficient resistance to incorrect insertion, which can damage the housing.
- a protrusion 30 in accordance with one embodiment of the present invention is shown.
- the protrusion 30 includes a leading side 31, a top side 32, and a trailing side 33.
- the protrusion 30 has been stamped out of the sheet metal that forms the terminal 1.
- the protrusion further includes one lateral side 34 that adjoins the other three sides.
- the top side 32 is parallel with the direction of insertion 10, and the leading side 31 and trailing side 33 have the same height and angle relative to the top side 32.
- the leading side 31 and trailing side 33 may vary in height and angle relative to the top side 32, which would provide a top side 32 that is not parallel with the direction of insertion 10.
- curved transition 35 Between each substantially planar side of protrusion 30, there is a curved transition 35. This is partly a product of the stamping process, but the curved transitions 35 also provide surfaces that reduce the potential to damage the housing and the sealing member, if there is one, during insertion of the terminal.
- a positive aspect of the embodiment shown in Figures 5A, 5B, and 5C is that the protrusion 30 has a self-supporting shape.
- the trailing side 32 provides mechanical support for the leading side 31 as the terminal 1 is incorrectly inserted.
- the lateral side 34 provides additional support to each of the sides. The resulting increase in mechanical strength allows for the protrusion 30 to be sized to provide a sufficient resistance to incorrect insertion, while reducing the risk that the protrusion
- Figures 7A and 7B show another embodiment of the present invention.
- the protrusion 50 has a slot 51 formed in the top side 32.
- the slot 51 provides a similar increase in the mass moment of inertia of the top side 32. This increases the overall stiffness of the protrusion 40.
- each of the embodiments presented above provide shapes for a protrusion that may be formed from sheet metal.
- Those of ordinary skill in the art will appreciate that combinations of the protrusions disclosed above may be made without departing from the scope of the present invention.
- the lateral side 34 shown in Figure 5A may be combined with the slot 51 in the top side 32 shown in Figure 7A.
- Protrusions in accordance with embodiments of the present invention exhibit increased stiffness and strength compared to the prior art protrusions for preventing incorrect insertions of terminals. Accordingly, the risk of incorrect insertion caused by failure of the protrusion or damage to the housing may be reduced by embodiments of the present invention.
- Embodiments of the present invention are compatible with the waterproof connectors shown in Figures 2 and 3.
- the shapes of the protrusions reduce the risk of damaging the sealing element of a collectively-waterproofed type connector.
- the inclusion of a top side of the protrusion provides a broad contact area that decreases the contact pressure of the protrusion on the sealing member during insertion of the terminal. The reduction in contact pressure reduces the risk of cutting, scratching, or tearing the sealing member. As a result, the integrity of the sealing member and the waterproof quality of the connector may be preserved.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007543232A JP4834673B2 (en) | 2004-11-19 | 2005-11-18 | Terminal with mis-insertion prevention protrusion |
EP05848183A EP1815560B1 (en) | 2004-11-19 | 2005-11-18 | Terminal having a protrusion for preventing incorrect insertion |
CN2005800397852A CN101065886B (en) | 2004-11-19 | 2005-11-18 | Terminal having a protrusion for preventing incorrect insertion |
DE602005024433T DE602005024433D1 (en) | 2004-11-19 | 2005-11-18 | END DEVICE WITH ADVANTAGE TO PREVENT INCORRECT INTRODUCTION |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/993,245 US7377820B2 (en) | 2004-11-19 | 2004-11-19 | Terminal having a protrusion for preventing incorrect insertion |
US10/993,245 | 2004-11-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006055706A1 true WO2006055706A1 (en) | 2006-05-26 |
Family
ID=35965977
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/041675 WO2006055706A1 (en) | 2004-11-19 | 2005-11-18 | Terminal having a protrusion for preventing incorrect insertion |
Country Status (7)
Country | Link |
---|---|
US (1) | US7377820B2 (en) |
EP (1) | EP1815560B1 (en) |
JP (1) | JP4834673B2 (en) |
KR (1) | KR20070100880A (en) |
CN (1) | CN101065886B (en) |
DE (1) | DE602005024433D1 (en) |
WO (1) | WO2006055706A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2493026A1 (en) * | 2011-02-28 | 2012-08-29 | Sumitomo Wiring Systems, Ltd. | Terminal fitting and waterproof connector provided therewith |
WO2015127926A1 (en) * | 2014-02-28 | 2015-09-03 | Erni Production Gmbh & Co. Kg | Plug connector |
WO2016012431A1 (en) * | 2014-07-21 | 2016-01-28 | Hirschmann Automotive Gmbh | Pin-and-socket connection comprising a socket contact and a pin contact |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7470137B2 (en) * | 2006-03-29 | 2008-12-30 | Fluke Corporation | Quick-release connector |
JP5396310B2 (en) * | 2010-03-01 | 2014-01-22 | 住友電装株式会社 | connector |
JP6203606B2 (en) * | 2013-11-13 | 2017-09-27 | モレックス エルエルシー | connector |
CN110947070A (en) * | 2013-12-20 | 2020-04-03 | 费雪派克医疗保健有限公司 | Humidification system connection |
JP6132207B2 (en) * | 2014-03-13 | 2017-05-24 | 住友電装株式会社 | Terminal fittings and connectors |
KR101640549B1 (en) * | 2014-07-25 | 2016-07-18 | (주) 대원씨앤알 | Upper ring inserting zig for dust cover molding die |
JP2019133759A (en) * | 2018-01-29 | 2019-08-08 | 住友電装株式会社 | connector |
Citations (4)
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US5626499A (en) * | 1994-02-10 | 1997-05-06 | Yazaki Corporation | Connector |
US6000976A (en) * | 1993-11-30 | 1999-12-14 | Yazaki Corporation | Terminal for passing through waterproof rubber plug and method of producing terminal |
US6227915B1 (en) * | 1999-03-16 | 2001-05-08 | Sumitomo Wiring Systems, Ltd. | Female terminal fitting |
EP1369960A1 (en) | 2002-06-06 | 2003-12-10 | Sumitomo Wiring Systems, Ltd. | A connector, a terminal fitting and a method for inserting a terminal fitting |
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US4832615A (en) * | 1986-07-07 | 1989-05-23 | Amp Incorporated | Sealed connector having unitary molded housing |
JPH039256Y2 (en) * | 1986-09-29 | 1991-03-07 | ||
JPH0547433A (en) * | 1991-08-16 | 1993-02-26 | Kansei Corp | Electric connector |
US5225147A (en) | 1991-09-17 | 1993-07-06 | General Physics International Engineering & Simulation, Inc. | Real time analysis of light water core neutronics |
JP3007781B2 (en) * | 1993-11-30 | 2000-02-07 | 矢崎総業株式会社 | Waterproof rubber plug insertion terminal |
JPH09102348A (en) * | 1995-10-04 | 1997-04-15 | Sumitomo Wiring Syst Ltd | Connector |
JP3440719B2 (en) * | 1996-11-08 | 2003-08-25 | 矢崎総業株式会社 | Terminal reverse insertion prevention structure |
US6283102B1 (en) | 1999-11-04 | 2001-09-04 | Daimlerchrysler Corporation | Fuel identifier algorithm |
JP2002033149A (en) * | 2000-07-17 | 2002-01-31 | Yazaki Corp | Connector |
JP3380528B2 (en) | 2000-07-13 | 2003-02-24 | 日本圧着端子製造株式会社 | Waterproof connector |
JP2002124335A (en) * | 2000-10-18 | 2002-04-26 | Sumitomo Wiring Syst Ltd | Terminal fitting |
JP2002175849A (en) * | 2000-12-07 | 2002-06-21 | Yazaki Corp | Connector |
JP2002184479A (en) | 2000-12-18 | 2002-06-28 | Jst Mfg Co Ltd | Female crimp-type terminal |
JP3576488B2 (en) * | 2000-12-18 | 2004-10-13 | 日本圧着端子製造株式会社 | Female terminal |
JP3654182B2 (en) * | 2000-12-21 | 2005-06-02 | 住友電装株式会社 | connector |
JP3415132B1 (en) * | 2002-06-06 | 2003-06-09 | 住友電装株式会社 | Terminal fittings and connectors |
JP4069780B2 (en) * | 2003-03-28 | 2008-04-02 | 住友電装株式会社 | connector |
-
2004
- 2004-11-19 US US10/993,245 patent/US7377820B2/en active Active
-
2005
- 2005-11-18 CN CN2005800397852A patent/CN101065886B/en active Active
- 2005-11-18 KR KR1020077011438A patent/KR20070100880A/en active Search and Examination
- 2005-11-18 EP EP05848183A patent/EP1815560B1/en active Active
- 2005-11-18 WO PCT/US2005/041675 patent/WO2006055706A1/en active Application Filing
- 2005-11-18 JP JP2007543232A patent/JP4834673B2/en active Active
- 2005-11-18 DE DE602005024433T patent/DE602005024433D1/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6000976A (en) * | 1993-11-30 | 1999-12-14 | Yazaki Corporation | Terminal for passing through waterproof rubber plug and method of producing terminal |
US5626499A (en) * | 1994-02-10 | 1997-05-06 | Yazaki Corporation | Connector |
US6227915B1 (en) * | 1999-03-16 | 2001-05-08 | Sumitomo Wiring Systems, Ltd. | Female terminal fitting |
EP1369960A1 (en) | 2002-06-06 | 2003-12-10 | Sumitomo Wiring Systems, Ltd. | A connector, a terminal fitting and a method for inserting a terminal fitting |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2493026A1 (en) * | 2011-02-28 | 2012-08-29 | Sumitomo Wiring Systems, Ltd. | Terminal fitting and waterproof connector provided therewith |
WO2015127926A1 (en) * | 2014-02-28 | 2015-09-03 | Erni Production Gmbh & Co. Kg | Plug connector |
US9722343B2 (en) | 2014-02-28 | 2017-08-01 | Erni Production Gmbh & Co. Kg | Plug-in connector |
WO2016012431A1 (en) * | 2014-07-21 | 2016-01-28 | Hirschmann Automotive Gmbh | Pin-and-socket connection comprising a socket contact and a pin contact |
Also Published As
Publication number | Publication date |
---|---|
EP1815560A1 (en) | 2007-08-08 |
DE602005024433D1 (en) | 2010-12-09 |
JP4834673B2 (en) | 2011-12-14 |
KR20070100880A (en) | 2007-10-12 |
US20060110976A1 (en) | 2006-05-25 |
JP2008521204A (en) | 2008-06-19 |
US7377820B2 (en) | 2008-05-27 |
EP1815560B1 (en) | 2010-10-27 |
CN101065886A (en) | 2007-10-31 |
CN101065886B (en) | 2010-11-10 |
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