EP0361771A2 - Terminal assembly with fixed and flexible tab receptacle retainers - Google Patents
Terminal assembly with fixed and flexible tab receptacle retainers Download PDFInfo
- Publication number
- EP0361771A2 EP0361771A2 EP89309550A EP89309550A EP0361771A2 EP 0361771 A2 EP0361771 A2 EP 0361771A2 EP 89309550 A EP89309550 A EP 89309550A EP 89309550 A EP89309550 A EP 89309550A EP 0361771 A2 EP0361771 A2 EP 0361771A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- terminal
- cavity
- receptacle
- wall portion
- shoulders
- 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- Withdrawn
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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
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
-
- 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
- H01R13/4223—Securing in resilient one-piece base or case, e.g. by friction; One-piece base or case formed with resilient locking means comprising integral flexible contact retaining fingers
Definitions
- This invention relates generally to electrical connectors and more particularly to electrical receptacle terminal assemblies.
- a present technology electrical tab receptacle terminal connector with visually inspectable components is disclosed in copending United States patent application Serial No. 107,681, filed October 13, 1987, owned by the assignee of this application and is incorporated herein by reference.
- the receptacle terminal connector described in application Serial No. 107,681 allows the receptacle terminal to be extracted from the connector without the use of special tools thus allowing for visual inspection of the receptacle terminal and the internals of the connector.
- a tab receptacle terminal is inserted within a terminal connector cavity and locked in place by an internal projection in the connector cavity. If an excessive pulling force is applied to the wire connected to the tab receptacle terminal, the projecting locking tab or retaining shoulder inside the connector may be sheared off. This will then allow the receptacle terminal to be "pushed out" of the connector block when insertion of a male tab terminal is attempted. This shearing of the locking projection and resultant pushout of the terminal from the connector body is the major problem in terminal connectors of this type, hence the visually inspectable feature.
- the present invention eliminates the pushout problem of present tab receptacle connectors by providing a locking projection or retainer in the interior walls of the connector on each side of the inserted tab receptacle terminal.
- One of these projections is fixed, the other is part of a biased finger as in application Serial No. 107,681. This biased finger is biased toward the inserted tab receptacle terminal thus ensuring firm engagement of the tab receptacle terminal with both locking projections because the locking projections project into apertures in the opposite faces of the inserted tab receptacle terminal.
- a tab receptacle terminal fully inserted into the connector according to the present invention is firmly held in place. Insertion of the blade of a male tab terminal within the receptacle will cause a certain amount of force to be exerted against the locking projections. However, in the present invention, this force is transmitted to both projections thus permitting twice the total force to be applied without danger of shearing off the projections. This total force capability prior to shearing of the locking projections is much greater than the force required for blade insertion. In addition, normal anticipated tugging on connected wires will not cause shearing. Therefore the pushout problem is eliminated by the additional locking projections.
- the terminal assembly of this invention is shown in Figures 1 and 2 as comprising a hollow body 10 formed of a molded plastic material and configured with a plurality of cavities 12, illustrated as four in number, for a like number of tab receptacle terminals 16.
- Each tab receptacle terminal cavity 12 has inwardly directed stop shoulders 14 at the forwardly terminating end of cavity 12.
- the shoulders 14 prevent insertion of a tab receptacle terminal 16 further than the full insertion depth shown in Figure 6.
- each shoulder 14 projects inward at right angles to the axis of terminal insertion.
- the outer surface 13 of each shoulder 14 is sloped inward to guide the insertion of a male terminal into the corresponding cavity 12.
- Each wall 28 includes a movable portion consisting of a finger member 22 which is integrally formed at only one end 17 with the body 10 so that it can deflect within the cavity 12 in directions toward and away from opposite shoulder 18.
- finger 22 is cantilever supported from the sidewall 28 of cavity 12 and is separated therefrom at its sides by two parallel slits 29.
- Each shoulder 18 is formed on a non-movable or stationary wall 26 within the body 10.
- the tab receptacle terminal 16 has two opposing apertures 19 and 21 into which the shoulders 18 and 20 project when receptacle terminal 16 is fully inserted within cavity 12 as shown in Figure 6.
- finger 22 is slightly biased inward toward the opposite wall 26 of cavity 12.
- the finger 22 is deflected in a direction away from wall 26, as shown in Figure 5.
- the engagement of forward end 23 with the inclined surface 27 on the inner side of shoulder 18 causes a similar deflection of receptacle terminal 16.
- the forward portion of terminal 16 is deflected away from wall 26 until the shoulder 18 is aligned with aperture 19 in tab receptacle terminal 16.
- tab receptacle terminal 16 is fully inserted with both shoulders 18 and 20 aligned with and projecting into the corresponding apertures 19 and 21 in terminal 16 and the forward end 23 of terminal 16 engaging shoulders 14. Terminal 16 is thus locked in place.
- an applied force tending to cause terminal 16 to be withdrawn will result in no motion so long as finger 22 is not deflected away from engagement with tab receptacle terminal 16.
- any applied withdrawal force is opposed by both projections 18 and 20 against the aperture walls in the upper and lower sides of tab receptacle terminal 16.
- the tab receptacle terminals 16 can be individually removed.
- the retaining shoulder 20 is deflected out of engagement with the aperture 21 in the tab receptacle terminal 16 by manually deflecting the finger 22 from its terminal retaining position shown in Figure 6 to its release position shown in Figure 5, and terminal 16 is manipulated to dislodge it from the shoulders 18 and 20.
- Tab receptacle terminal 16 can then be withdrawn from body 10. This enables easy inspection of the body 10 and the tab receptacle terminals 16 housed within.
Landscapes
- Connector Housings Or Holding Contact Members (AREA)
Abstract
Description
- This invention relates generally to electrical connectors and more particularly to electrical receptacle terminal assemblies.
- Various insulated receptacle terminal assemblies or connectors have been devised for engaging a male terminal with a mating receptacle terminals. However, in the case of the tab receptacle terminal, once the is terminal is inserted into the connector body, internal projections within the connector body engage the tab receptacle terminal such that either withdrawal of the terminal from the body or further insertion is prevented.
- A present technology electrical tab receptacle terminal connector with visually inspectable components is disclosed in copending United States patent application Serial No. 107,681, filed October 13, 1987, owned by the assignee of this application and is incorporated herein by reference. The receptacle terminal connector described in application Serial No. 107,681 allows the receptacle terminal to be extracted from the connector without the use of special tools thus allowing for visual inspection of the receptacle terminal and the internals of the connector.
- In present technology tab receptacle terminal assemblies, a tab receptacle terminal is inserted within a terminal connector cavity and locked in place by an internal projection in the connector cavity. If an excessive pulling force is applied to the wire connected to the tab receptacle terminal, the projecting locking tab or retaining shoulder inside the connector may be sheared off. This will then allow the receptacle terminal to be "pushed out" of the connector block when insertion of a male tab terminal is attempted. This shearing of the locking projection and resultant pushout of the terminal from the connector body is the major problem in terminal connectors of this type, hence the visually inspectable feature.
- It is therefore an object of the invention to provide an improved engagement of an inserted tab receptacle terminal within a tab receptacle terminal connector cavity.
- It is a further object of the invention to provide a tab receptacle terminal connector wherein the tab receptacle terminals are easily removed.
- It is a still further object of the invention to provide a tab receptacle terminal connector having visually inspectable components.
- The present invention eliminates the pushout problem of present tab receptacle connectors by providing a locking projection or retainer in the interior walls of the connector on each side of the inserted tab receptacle terminal. One of these projections is fixed, the other is part of a biased finger as in application Serial No. 107,681. This biased finger is biased toward the inserted tab receptacle terminal thus ensuring firm engagement of the tab receptacle terminal with both locking projections because the locking projections project into apertures in the opposite faces of the inserted tab receptacle terminal.
- An example of a suitable tab receptacle terminal which may be used in the present invention is more fully described in copending United States application Serial No. 916,950 filed October 8, 1986, owned by the assignee of this application and incorporated herein by reference.
- A tab receptacle terminal fully inserted into the connector according to the present invention is firmly held in place. Insertion of the blade of a male tab terminal within the receptacle will cause a certain amount of force to be exerted against the locking projections. However, in the present invention, this force is transmitted to both projections thus permitting twice the total force to be applied without danger of shearing off the projections. This total force capability prior to shearing of the locking projections is much greater than the force required for blade insertion. In addition, normal anticipated tugging on connected wires will not cause shearing. Therefore the pushout problem is eliminated by the additional locking projections.
-
- Figure 1 is a front end view of the assembly body in which tab receptacle terminals in the terminal assembly of this invention are mounted;
- Figure 2 is a sectional view of the terminal assembly body shown in Figure 1 taken along lines 2-2;
- Figure 3 is a fragmentary sectional view of the terminal assembly body shown in Figure 1 taken on the lines 3-3;
- Figure 4 is a fragmentary sectional view of one of the tab terminal receptacle cavities shown in Figure 2 showing a tab receptacle terminal partially inserted therein;
- Figure 5 is a fragmentary sectional view like Figure 4 showing the tab receptacle terminal inserted further so as to push the movable locking projection outward;
- Figure 6 is a fragmentary sectional view like Figure 4 showing the tab receptacle terminal fully inserted in the body cavity.
- With reference to the drawing, the terminal assembly of this invention is shown in Figures 1 and 2 as comprising a
hollow body 10 formed of a molded plastic material and configured with a plurality ofcavities 12, illustrated as four in number, for a like number oftab receptacle terminals 16. - Each tab
receptacle terminal cavity 12 has inwardly directedstop shoulders 14 at the forwardly terminating end ofcavity 12. Theshoulders 14 prevent insertion of atab receptacle terminal 16 further than the full insertion depth shown in Figure 6. - The
inner surface 15 of eachshoulder 14 projects inward at right angles to the axis of terminal insertion. Theouter surface 13 of eachshoulder 14 is sloped inward to guide the insertion of a male terminal into thecorresponding cavity 12. - Inside each
cavity 12 and spaced fromshoulders 14, are inwardly projecting retaining tabs orshoulders interior cavity walls wall 28 includes a movable portion consisting of afinger member 22 which is integrally formed at only one end 17 with thebody 10 so that it can deflect within thecavity 12 in directions toward and away fromopposite shoulder 18. As shown in Figure 3,finger 22 is cantilever supported from thesidewall 28 ofcavity 12 and is separated therefrom at its sides by twoparallel slits 29. - Each
shoulder 18 is formed on a non-movable orstationary wall 26 within thebody 10. Thetab receptacle terminal 16 has twoopposing apertures shoulders receptacle terminal 16 is fully inserted withincavity 12 as shown in Figure 6. As shown in Figure 4, in a relaxed state,finger 22 is slightly biased inward toward theopposite wall 26 ofcavity 12. Astab receptacle terminal 16 is inserted it is advanced toward the left as viewed in Figure 4. When theforward end 23 ofterminal 16 engages theinclined ramp surface 25 on the inner side ofshoulder 20, thefinger 22 is deflected in a direction away fromwall 26, as shown in Figure 5. The engagement offorward end 23 with theinclined surface 27 on the inner side ofshoulder 18 causes a similar deflection ofreceptacle terminal 16. The forward portion ofterminal 16 is deflected away fromwall 26 until theshoulder 18 is aligned withaperture 19 intab receptacle terminal 16. - In Figure 6,
tab receptacle terminal 16 is fully inserted with bothshoulders corresponding apertures terminal 16 and theforward end 23 ofterminal 16engaging shoulders 14.Terminal 16 is thus locked in place. Oncetab receptacle terminal 16 is fully inserted withincavity 12 ofbody 10, an applied force tending to causeterminal 16 to be withdrawn will result in no motion so long asfinger 22 is not deflected away from engagement withtab receptacle terminal 16. In addition, any applied withdrawal force is opposed by bothprojections tab receptacle terminal 16. - When the male terminals have been removed from the
body 10, thetab receptacle terminals 16 can be individually removed. To remove atab receptacle terminal 16, the retainingshoulder 20 is deflected out of engagement with theaperture 21 in thetab receptacle terminal 16 by manually deflecting thefinger 22 from its terminal retaining position shown in Figure 6 to its release position shown in Figure 5, andterminal 16 is manipulated to dislodge it from theshoulders Tab receptacle terminal 16 can then be withdrawn frombody 10. This enables easy inspection of thebody 10 and thetab receptacle terminals 16 housed within. - The present invention has been described in an illustrative manner. It is to be understood that the terminology which has been used is intended to be in the nature of words of description rather than of limitation. Obviously many modifications and variations of the present invention are possible in light of the above teachings. Accordingly, the teachings of the present invention, within the scope of the appended claims, may be practiced other than as specifically described.
Claims (8)
said body including a movable wall portion on one side of said cavity;
said movable wall portion having a retention shoulder thereon and being movable between a retain position for retaining a tab receptacle terminal in said cavity and a release position for releasing said terminal for withdrawal from said cavity, said movable portion being biased toward said retain position;
said body having a non-movable wall portion on the opposite side of said cavity; and
a retention shoulder on said non-movable wall portion for retaining said terminal within said cavity when said movable wall portion is in said retain position so that said terminal member can be retained within said cavity by said retention shoulders and is removable from said cavity on movement of said movable wall portion in a direction away from said non-movable wall portion to said release position.
said body including a stationary wall on one side of said cavity adjacent one side of said terminal, retention means on said wall portion engaged with said one side of terminal so as to retain said terminal in said cavity,
said body including a movable wall portion on the opposite side of said cavity adjacent the other side of said terminal, retention means on said movable wall portion engagable with said terminal on movement toward said stationary wall portion so as to retain said terminal in said cavity,
said movable wall portion being selectively movable in a direction away from said terminal to disengage the retention means thereon from said terminal and enable said terminal to be moved in a direction away from said stationary wall and out of engagement with the retention means thereon to thereby enable withdrawal of said terminal from said cavity.
a hollow body having at least one cavity bounded by at least one interior wall;
a receptacle terminal insertable within said cavity;
said hollow body having inwardly projecting first shoulders at one end of said body;
said wall having two longitudinal slits extending from said end having first shoulders forming a resilient finger between said slits in said wall, said finger being biased in a direction inwardly of said cavity;
said finger having a first raised inner portion forming a second shoulder having an edge for engaging said receptacle terminal when said receptacle terminal is fully inserted against said first shoulders; and
said wall having a second raised inner portion forming a third shoulder having an edge for engaging said receptacle terminal when said receptacle is fully inserted against said first shoulder whereby said receptacle terminal is restrained from withdrawal by said second and third shoulders and restrained against further insertion by said first shoulders, and said finger being deflectable outwardly of said cavity to allow withdrawal of said receptacle terminal from said cavity.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US24859188A | 1988-09-26 | 1988-09-26 | |
US248591 | 1988-09-26 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0361771A2 true EP0361771A2 (en) | 1990-04-04 |
EP0361771A3 EP0361771A3 (en) | 1990-10-31 |
Family
ID=22939769
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890309550 Withdrawn EP0361771A3 (en) | 1988-09-26 | 1989-09-20 | Terminal assembly with fixed and flexible tab receptacle retainers |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0361771A3 (en) |
JP (1) | JPH02162668A (en) |
KR (1) | KR900005650A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2280794A (en) * | 1993-08-06 | 1995-02-08 | Yazaki Corp | Electrical connector having a guide for a mating terminal |
EP0644618A2 (en) * | 1993-09-16 | 1995-03-22 | Molex Incorporated | Electrical connector with improved terminal latching means |
EP0677891A1 (en) * | 1994-04-12 | 1995-10-18 | Framatome Connectors International S.A. | Electric connector |
WO1998034301A1 (en) * | 1997-02-01 | 1998-08-06 | Ut Automotive Dearborn, Inc. | Improved lateral insertion connector |
EP1903638A3 (en) * | 2006-09-19 | 2008-07-09 | Delphi Technologies, Inc. | Electrical connector |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012199189A (en) * | 2011-03-23 | 2012-10-18 | Yazaki Corp | Connector |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4295698A (en) * | 1978-10-10 | 1981-10-20 | Bunker Ramo Corporation | Electrical connector housing |
GB2162702A (en) * | 1984-08-01 | 1986-02-05 | Labinal | Latching electrical contact into connector body |
US4714437A (en) * | 1987-01-20 | 1987-12-22 | Ford Motor Company | Electrical connector |
-
1989
- 1989-09-20 EP EP19890309550 patent/EP0361771A3/en not_active Withdrawn
- 1989-09-25 KR KR1019890013836A patent/KR900005650A/en not_active Application Discontinuation
- 1989-09-26 JP JP1250375A patent/JPH02162668A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4295698A (en) * | 1978-10-10 | 1981-10-20 | Bunker Ramo Corporation | Electrical connector housing |
GB2162702A (en) * | 1984-08-01 | 1986-02-05 | Labinal | Latching electrical contact into connector body |
US4714437A (en) * | 1987-01-20 | 1987-12-22 | Ford Motor Company | Electrical connector |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2280794A (en) * | 1993-08-06 | 1995-02-08 | Yazaki Corp | Electrical connector having a guide for a mating terminal |
US5529515A (en) * | 1993-08-06 | 1996-06-25 | Yazaki Corporation | Connector equipped with front member |
GB2280794B (en) * | 1993-08-06 | 1997-06-11 | Yazaki Corp | Connector equipped with front member |
EP0644618A2 (en) * | 1993-09-16 | 1995-03-22 | Molex Incorporated | Electrical connector with improved terminal latching means |
EP0644618A3 (en) * | 1993-09-16 | 1996-03-27 | Molex Inc | Electrical connector with improved terminal latching means. |
EP0677891A1 (en) * | 1994-04-12 | 1995-10-18 | Framatome Connectors International S.A. | Electric connector |
US5658173A (en) * | 1994-04-12 | 1997-08-19 | Framatome Connectors International | Electric connector |
WO1998034301A1 (en) * | 1997-02-01 | 1998-08-06 | Ut Automotive Dearborn, Inc. | Improved lateral insertion connector |
EP1903638A3 (en) * | 2006-09-19 | 2008-07-09 | Delphi Technologies, Inc. | Electrical connector |
KR100943136B1 (en) | 2006-09-19 | 2010-02-18 | 델피 테크놀로지스 인코포레이티드 | Electrical connector |
Also Published As
Publication number | Publication date |
---|---|
JPH02162668A (en) | 1990-06-22 |
EP0361771A3 (en) | 1990-10-31 |
KR900005650A (en) | 1990-04-14 |
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R18W | Application withdrawn (corrected) |
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