GB2320372A - Short-circuit contact member - Google Patents
Short-circuit contact member Download PDFInfo
- Publication number
- GB2320372A GB2320372A GB9805681A GB9805681A GB2320372A GB 2320372 A GB2320372 A GB 2320372A GB 9805681 A GB9805681 A GB 9805681A GB 9805681 A GB9805681 A GB 9805681A GB 2320372 A GB2320372 A GB 2320372A
- Authority
- GB
- United Kingdom
- Prior art keywords
- portions
- contact
- short
- resilient
- contact member
- 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.)
- Granted
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
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
- H01R13/7031—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity
- H01R13/7032—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity making use of a separate bridging element directly cooperating with the terminals
-
- 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
- H01R13/641—Means for preventing incorrect coupling by indicating incorrect coupling; by indicating correct or full engagement
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
- H01R12/70—Coupling devices
- H01R12/71—Coupling devices for rigid printing circuits or like structures
- H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
- H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
- H01R12/724—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits containing contact members forming a right angle
-
- 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
- H01R13/627—Snap or like fastening
- H01R13/6271—Latching means integral with the housing
- H01R13/6272—Latching means integral with the housing comprising a single latching arm
-
- 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
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
- H01R13/7031—Shorting, shunting or bussing of different terminals interrupted or effected on engagement of coupling part, e.g. for ESD protection, line continuity
Abstract
A short-circuit contact member 19 for indicating full engagement of an electrical coupling comprises a base 19a, a plate 19b bent from the plate 19a and juxtaposed contact arms 19c having a slit 19f therebetween, each arm having an intermediate contact point 19c* small Greek omega * and a driving portion 19d at the end remote from the plate 19b. A cover 19e of the contact member 19 extends over the plate 19b. Protruberences 19g of the contact member 19 retain the contact member 19 in a connector A'. A latch 14 of the connector A' retains the connector when it is coupled with a counterpart B', and also engages the driving portion 19d of the contact member during coupling. The contact member 19 shorts contacts D" of the counterpart B' when connector and counterpart are coupled.
Description
CONNECTION SENSOR AND SHORT-CIRCUITING CONTACT FOR CONNECTOR
This is a divisional application
of the parent British Patent
Application No. 9423945.6.
The invention relates to a shortcircuiting contact for a pair of connectors used for connecting wire harnesses of an automobile or the like, the
short-circuiting contact having a means for sensing complete connection of the pair of connectors.
In Figures 8 and 9, reference character A denotes a male connector housing; and B, a female connector housing.
Each connector housing is molded using a synthetic resin material.
As well know, the male connector housing A has a plurality of terminal accommodating chambers 1 to allow a female terminal fitting C to be inserted thereinto and retained therein. Similarly, the female connector housing B has a plurality of terminal accommodating chambers (not shown) to allow a male terminal fitting D to be inserted thereinto and retained therein.
A cantilevered flexible lock arm 3 having a rising base portion 3a at a front end thereof extends rearward in a recessed portion 2 on the upper surface of the male connector housing A. A lock protuberance 3b is arranged on the upper surface in a middle portion of the flexible lock arm 3 and unlock press operation portions 3c are arranged on the free end thereof. Not only an engagement frame portion 5 corresponding to the flexible lock arm 3 but also a retaining opening Sa corresponding to the lock protuberance 3b are arranged in a middle portion of the front end of an upper wall 4 of the female connector housing B.
The aforementioned construction is generally known.
When the male and female connector housings A, B are engaged with each other, the female and male terminal fittings C, D come in contact with each other and, at this instance, the flexible lock arm 3 is flexibly displaced downward through a displacement allowing space R provided therebelow by the lock protuberance 3b thereof colliding against the engagement frame portion 5, and thereafter returns to the original position thereof by the lock protuberance 3b having reached the retaining opening Sa, so that complete connection of the male and female connector housings is locked.
Reference numeral 6 denotes a connection sensing contact, which has not only a resilient contact portion 6b erected at one end of a main plate portion 6a through a folded portion 6', but also a tab-like male terminal portion 6c that extends rearward at the other end of the main plate portion 6a through a folded portion 6" that is folded in a direction opposite to that of the resilient contact portion 6b. A pair of connection sensing contacts 6, 6 are fixed by causing the folded portions 6' thereof to be fitted with the recessed portion 2 as well as an end portion of a compartment wall 8 between the terminal accommodating chambers 1', 1' neighboring the recessed portion 2. As a result, the pair of resilient contact portions 6b, 6b are erected within the displacement allowing space R so as to confront the free end portion of the flexible lock arm 3. The tab-like male terminal portions 6c, 6c are fixed rearward within the terminal accommodating chambers 1', 1'. The ordinary female terminal fittings C are connected to the tab-like male terminal portions 6c, 6c, so that a sensing circuit is formed.
Reference numeral 7 denotes a inverted U-shaped shortcircuiting contact made of a resilient metal plate. The shortcircuiting contact 7 has outwardly extending folded portions 7b, 7b at both leg portions 7a, 7a thereof. The shortcircuiting contact 7 is fixed while fitted with confronting plate portions 5b, Sb of the engagement frame 5.
In the aforementioned construction, if the male and female connector housings A, B are connected incompletely, the free end portion of the flexible lock arm 3 not only displaces itself downward, but also forcibly displaces the resilient contact portions 6b, 6b of the connection sensing contacts 6, 6 downward as shown in Figure 9 (b). As a result, the contact of the short-circuiting contact 7 with the resilient contact portions 6b, 6b is broken, which makes the sensing electric circuit inoperable.
When the male and female connector housings A, B are connected completely, the flexible lock arm 3 returns to the original position thereof to cause the resilient contact portions 6b, 6b of the connection sensing contacts 6, 6 to return to the original position thereof as shown in
Figure 9 (c), so that the resilient contact portions 6b, 6b come in contact with the short-circuiting contact 7 to thereby activate the sensing electric circuit.
In the aforementioned conventional art, not only a pair of connection sensing contacts are arranged in the male connector housing having the flexible lock arm and the short-circuiting contact is arranged in the female connector housing, but also a pair of terminal fittings that are connected to the connection sensing contacts in the male connector housing. Therefore, the construction of the connection sensor is complicated, making a simple design infeasible.
The invention has been made in consideration of the aforementioned circumstances and an object of the invention is, therefore, to simplify the connection sensor by getting rid of the connection sensing contacts in the case where the female connector is a connector used for a printed wiring board or the like.
According to the present invention there is provided a short-circulating contact member comprising: a resilient plate member arranged on a base plate portion through an arcuately folded base portion; cantilevered resilient contact pieces juxtaposed with each other on the resilient plate portion and interposing a slit therebetween; shortcircuiting contact points arranged in intermediate portions of the resilient contact pieces, respectively; and driven portions erected on free end portions of the resilient contact pieces, respectively.
Preferably, collision portions, being abutted against each other, are arranged on a slit side of the pair of driven portions.
Preferably, covering plate portions extend from the base plate portion so as to cover the resilient plate portion.
When the pair of connectors are incompletely connected, the resilient contact pieces of the short-circuiting contact are forcibly moved away from the connection sensing pin-type terminal fittings, whereas when the pair of connectors are completely connected, the resilient contact pieces return to the original position thereof to be abutted against the connection sensing pin-type terminal fittings.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 is an exploded partially perspective view showing male and female connector housings of an embodiment of the invention in a separated state;
Figure 2 is a perspective view of the male connector housing as viewed off to the front;
Figure 3 is a perspective view of a short-circuiting contact;
Figure 4 is a sectional view of the male and female connector housings;
Figure 5 is a longitudinal sectional view of the male and female connector housings at an initial stage of connection;
Figure 6 is a longitudinal sectional view of the male and female connector housings in an incompletely connected state;
Figure 7 is a longitudinal sectional view of the male and female connector housings in the completely connected state;
Figure 8 is an exploded perspective view of a conventional example;
Figures 9 (a) is a longitudinal sectional view of the conventional example of Figure 8 in a separated state
Figures 9 (b) is a longitudinal sectional view of the conventional example of Figure 8 in an incompletely connected state; and
Figures 9 (c) is a longitudinal sectional view of the conventional example of Figure 8 in the completely connected state.
In Figure 1 reference character A' denotes a male connector housing; B', a female connector housing for a printed wiring board. Each connector housing is molded using a synthetic resin material.
The male connector housing A' has a plurality of terminal accommodating chambers 10, and a female terminal fitting C' is inserted thereinto and retained therein (see
Figure 4). The female connector housing B' has pin-type male terminal fittings D' juxtaposed within a housing body 12 while supported by a rear wall 11 (see Figure 4).
A cantilevered flexible lock arm 14 having a rising base portion 14a at the front end thereof extends rearward in a recessed portion 13 on the upper surface of the male connector housing A'. A lock protuberance 14b is arranged on the upper surface of a middle portion of the flexible lock arm 14 and an unlock press portion 14c is arranged on the free end thereof. Not only an engagement frame portion 16 corresponding to the flexible lock arm 14 but also a retaining opening 16a corresponding to the lock protuberance 14b are arranged in a middle portion of the front end of an upper wall 15 of the female connector housing B'.
When the male and female connector housings A', B' are engaged with each other, the female and male terminal fittings
C', D*' come in contact with each other and, at this instance, the flexible lock arm 14 is flexibly displaced downward through a displacement allowing space R1 provided therebelow by the lock protuberance 14b thereof colliding against the front end of the engagement frame portion 16, and thereafter returns to the original position thereof with the lock protuberance 14b having reached the retaining opening 16a, so that complete connection of the male and female connector housings is locked.
A support frame portion 17 extends frontward from the rear wall 11 so as to correspond to the engagement frame portion 16 within the housing body 12 of the female connector housing B' . The support frame portion 17 is substantially Tshaped in section by arranging a partition plate portion 17b in the middle of a flat plate portion 17a. A pair of connection sensing pin-type terminal fittings D" are arranged on both sides of the partition plate portion 17b while passing through the rear wall 11. The connection sensing pin-type terminal fittings D" extend further frontward than the aforementioned pin-type male terminal fittings D'.
A substantially T-shaped opening 18 extends rearward at a position corresponding to the flexible lock arm 14 in the male connector housing A'. The opening 18 allows the support frame portion 17 to enter. Below the opening 18 is a shortcircuiting contact 19 support chamber 20 with the front thereof opened.
In the short-circuiting contact 19 made of a resilient metal plate, not only a resilient plate portion 19b is arranged through an arcuately folded portion 19bl on a base plate portion 19a so as to increase resiliency, but also bifurcated resilient contact pieces l9c, 19c are arranged as cantilevers on the resilient plate portion 19b while interposing a slit 19f therebetween. The respective resilient contact pieces 19c, 19c have lower flat portions l9cl, rising portions 19c2, arcuate short-circuiting contact points l9c3, and upper flat portions 19c4. Driven portions 19d, 19d are erected on the free end portions. Cover plate portions 19e, 19e are arranged above the resilient plate portion 19b by bending both sides of the base plate portion l9a. Pressure receiving plate portions 19dl, 19d1 are provided on top of the pair of driven portions 19d, l9d, and collision plate portions 19d2, 19d2 are arranged so as to confront each other by causing the inner ends of the pressure receiving portions 19d1, 19dl to face downward, so that when a load is applied, these pressure receiving portions mutually support such load to prevent the driven portions 19d, 19d from falling down inwardly. The cover plate portions 19e, 19e not only protect the resilient plate portion 19b, but also keep a load from the flexible lock arm 14 from being directly applied to the housing. Retaining protuberances 199 corresponding to the support chamber 20 are arranged on both lateral sides of the cover plate portions 19e, 19e.
The short-circuiting contact 19 is fixed by causing the base portion l9a to the covering plate portions 19e, 19e to be fitted with the support chamber 20. The resilient contact pieces l9c extend rearward so that the short-circuiting contact points thereof 19c3 confront a bottom wall 13a of the recessed portion 13 through a distance R2 therein, and the drive portions 19d are abutted against the lower side of the unlock press portion 14c of the flexible lock arm 14 while entering into the recessed portion 13 from a notch 13al of the bottom wall 13a (see Figure 4). The pair of resilient contact pieces 19c, 19c, interposing the slit 19f therebetween, can be resiliently displaced independently of each other. Therefore, the resilient contact pieces 19c, 19c can reliably short circuit the pair of connection sensing pin-type terminal fittings D" serving as the members to be short-circuited even if these connection sensing pin-type terminal fittings D" are displaced in the upper or lower direction.
In the aforementioned construction, when the operation of connecting the male and female connector housings A', B' is started, the support frame portion 17 and the connection sensing pin-type terminal fittings D" enter into the opening 18 (see Figure 5). As the connecting operation is progressed, the front ends of the support frame portion 17 and the connection sensing pin-type terminal fittings D" enter into the distance
R2. At this instance, the lock protuberance 14b gets engaged with the lower portion of the engagement frame portion 16, so that the flexible lock arm 14 is flexibly displaced through the displacement allowing space Rl and, in association with the flexible displacement of the flexible lock arm 14, the resilient contact pieces l9c of the short-circuiting contact 19 are displaced in such a direction as to widen the distance R2.
Hence, the connection sensing pin-type terminal fittings D" are not in contact with the short-circuiting contact 19 (see Figure 6). When the male and female connector housings A', B' have been connected completely, the flexible lock arm 14 returns to the original position thereof to cause the resilient contact pieces 19c, 19c of the short-circuiting contact 19 to return to the original position thereof. As a result, the shortcircuiting points 19c3, 19c3 come in contact with the pair of connection sensing pin-type terminal fittings D", D" to operate the sensing electric circuit (see Figure 7).
A first advantage of the invention is that the connection sensor can be simplified by getting rid of the conventionally employed connection sensing contacts.
Secondly, even if the pair of connection sensing pin-type terminal fittings to be shortcircuited are displaced, the resilient contact pieces that are displaceable independently of each other come in contact with the corresponding pin-type terminal fittings, ensuring perfect short-circuiting.
Thirdly, when the pair of resilient contact pieces receive a load of the flexible lock arm through the driven portions, the collision portions block the driven portions from falling down to thereby allow the resilient contact pieces to be displaced in accordance with the displacement of the flexible lock arm.
Fourthly, displacement of the flexible lock arm can be transmitted to the resilient contact pieces efficiently.
Fifthly, smooth contact of the resilient contact pieces with the connection sensing pintype terminal fittings can be effected at the time of connecting the pair of housings to each other.
Sixthly, durable resiliency can be imparted to the resilient contact pieces, because the resilient contact pieces are continuous from the folded resilient plate portions.
Seventhly, falling down of the driven portions can be blocked when a load is applied to the driven portions.
Eighthly, resiliency of the resilient plate portion is never disturbed by fixing the short-circuiting contact through the base plate portion and the cover plate portion.
Claims (4)
1. A short-circuiting contact member comprising:
a resilient plate member arranged on a base plate portion through an arcuately folded base portion; cantilevered resilient contact pieces juxtaposed with each other on the resilient plate member and interposing a slit therebetween;
short-circuiting contact points arranged in intermediate portions of the cantilevered resilient contact pieces, respectively; and
driven portions being erected on free end portions of the resilient contact pieces, respectively.
2. A short-circuiting contact according to claim 1, wherein the driven portions includes a pair of driven portions on which collision portions abutted against each other at a silt side of the pair of driven portions are arranged.
3. A short-circuiting contact according to claim 1, wherein covering plate portions extend from the base plate portion so as to cover the resilient plate portion.
4. A contact member according to claim 1, substantially as described with reference to figures 3 to 7 of the accompanying drawings.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5289153A JP2725759B2 (en) | 1993-11-18 | 1993-11-18 | Connector coupling detection device and short-circuit contact |
| GB9423945A GB2284108B (en) | 1993-11-18 | 1994-11-18 | Connection sensor and short-circuiting contact for connector |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9805681D0 GB9805681D0 (en) | 1998-05-13 |
| GB2320372A true GB2320372A (en) | 1998-06-17 |
| GB2320372B GB2320372B (en) | 1998-08-05 |
Family
ID=26306049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9805681A Expired - Lifetime GB2320372B (en) | 1993-11-18 | 1994-11-18 | A short-circuiting contact for connector |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2320372B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10221662B4 (en) * | 2001-05-18 | 2008-05-08 | Sumitomo Wiring Systems, Ltd., Yokkaichi | A lever-type connector |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1372834A (en) * | 1972-02-01 | 1974-11-06 | Nehmann E Francksche Verlagsha | Assembly for selectively interconnecting electrical components |
| GB1437721A (en) * | 1973-06-21 | 1976-06-03 | Cannon Electric Great Britain | Electrical termination arrangements for flat cables |
| EP0251557A1 (en) * | 1986-06-30 | 1988-01-07 | The Whitaker Corporation | Bus bar connector assembly |
| EP0264686A1 (en) * | 1986-10-09 | 1988-04-27 | Licentia Patent-Verwaltungs-GmbH | Holding bars connectable with profile bars of a component board support |
| EP0643453A1 (en) * | 1993-09-09 | 1995-03-15 | CONNECTEURS CINCH, Société Anonyme dite : | Electrical connecting member for two male tabs |
-
1994
- 1994-11-18 GB GB9805681A patent/GB2320372B/en not_active Expired - Lifetime
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1372834A (en) * | 1972-02-01 | 1974-11-06 | Nehmann E Francksche Verlagsha | Assembly for selectively interconnecting electrical components |
| GB1437721A (en) * | 1973-06-21 | 1976-06-03 | Cannon Electric Great Britain | Electrical termination arrangements for flat cables |
| EP0251557A1 (en) * | 1986-06-30 | 1988-01-07 | The Whitaker Corporation | Bus bar connector assembly |
| EP0264686A1 (en) * | 1986-10-09 | 1988-04-27 | Licentia Patent-Verwaltungs-GmbH | Holding bars connectable with profile bars of a component board support |
| EP0643453A1 (en) * | 1993-09-09 | 1995-03-15 | CONNECTEURS CINCH, Société Anonyme dite : | Electrical connecting member for two male tabs |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10221662B4 (en) * | 2001-05-18 | 2008-05-08 | Sumitomo Wiring Systems, Ltd., Yokkaichi | A lever-type connector |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2320372B (en) | 1998-08-05 |
| GB9805681D0 (en) | 1998-05-13 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PE20 | Patent expired after termination of 20 years |
Expiry date: 20141117 |