EP0938758B1 - Electrical contact - Google Patents
Electrical contact Download PDFInfo
- Publication number
- EP0938758B1 EP0938758B1 EP97948230A EP97948230A EP0938758B1 EP 0938758 B1 EP0938758 B1 EP 0938758B1 EP 97948230 A EP97948230 A EP 97948230A EP 97948230 A EP97948230 A EP 97948230A EP 0938758 B1 EP0938758 B1 EP 0938758B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- section
- latch member
- wall portion
- electrical contact
- 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.)
- Expired - Lifetime
Links
Images
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
- H01R13/428—Securing in a demountable manner by resilient locking means on the contact members; by locking means on resilient contact members
- H01R13/432—Securing in a demountable manner by resilient locking means on the contact members; by locking means on resilient contact members by stamped-out resilient tongue snapping behind shoulder in base or case
-
- 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
Definitions
- the present invention relates to an electrical contact that has a contact section that mates with a mating contact, and an electrical wire connection section. More specifically, the present invention relates to an electrical contact provided with a flexible latching member that is latchable to a connector housing.
- a conventional electrical contact shown in FIGS.6A, 6B and disclosed in Japanese Utility Model Laid-Open No. 145492/77 has a contact section 110 that mates with a mating contact (not shown); a wire crimp section that includes a wire barrel 131 and an insulation barrel 132 and is connected with an electrical wire (not shown) by crimping thereto; and a latching section 120 disposed between the contact section 110 and the wire crimp section 130, and that is latched to a connector housing (not shown).
- the electrical contact 100 is formed by stamping and forming a metal sheet.
- the contact section 110 is formed substantially in the shape of a box that has a base member 111, a pair of side walls 112, that are raised from both sides of the base member 111, and top plates 113, that are bent inward from the side walls 112 so that a tab or post-mating contact can be accommodated therein.
- a plurality of spring contact members 114,115 engage the mating contact and are disposed so that the spring contact members extend rearward and approach each other from the front ends of the base member 111 and top plates 113 (i.e., the left end in FIG. 6B).
- the latching section 120 has a flexible member 121 that is cut and raised from base member 111 so that flexible latch member 121 rises upward as shown in FIG. 6B) toward the rear from the base member 111, and a pair of side wall portions 122 extending rearward from the respective side walls 112 of the contact section 110, and whose upper ends are located beyond the free end of the latch member 121.
- the side wall portions 122 prevent the electrical wire from becoming entangled with the latch member 121 during crimping, and also act to prevent reverse insertion of the electrical contact 100 when the electrical contact 100 is inserted and held in the connector housing.
- a feature of the present invention is to provide, in a simple form, an electrical contact in which a latch member protective section protecting a flexible latch member and preventing reverse insertion of the electrical contact into a connector housing, is structurally strengthened, and the contact is equipped with an anti-overstress member that prevents overstress of the flexible latch member.
- An electrical contact of the present invention comprises a contact section having a spring contact member, a latching section having a flexible latch member, and a latch member protective section, wherein the latch member protective section includes an outside wall portion extending upward from a side wall of the latch member protective section, an inside wall portion extending downward from an upper end of the outside wall portion, and an anti-overstress member extending from an inner end of the inside wall portion toward the other side wall of the latch member protective section so that the anti-overstress member can be engaged by the flexible latch member.
- FIGURE 1 is a plan view that shows an electrical contact of the present invention together with a carrier strip.
- FIGURES 2 and 3 are right-side and front views of the electrical contact shown in FIG. 1.
- FIGURES 4 and 5 are cross-sectional views taken along lines 4-4 and 5-5 in FIGS. 2 and 1 respectively.
- FIGURES 6A and 6B show a conventional electrical contact with FIG. 6A being a perspective view of the electrical contact, while FIG. 6B is a longitudinal cross-sectional view of the electrical contact taken along line 6B-6B of FIG. 6A.
- electrical contact 1 has a contact section 10, that mates with a mating contact (not shown), an electrical wire connection or crimp section 30 that includes a wire barrel 31 and an insulation barrel 32, and that is to be electrically connected to an electrical wire, and a latching section 20, that is disposed between the contact section 10 and wire crimp section 30.
- Contact 1 is formed by stamping and forming a metal sheet, and in FIGS. 1 and 2, the contact is connected to a carrier strip 40 that is cut away after contact 1 has been manufactured, electrically connected to an electrical wire or inserted into a connector housing.
- Contact section 10 is formed substantially in the shape of a box that has a base member 11, a pair of side walls 12 and 13, lower top walls 14a and 14b that are bent inward from an upper end of one of the side walls 12 (i. e., the upper end in FIG. 5) at the front end (left end in FIG. 5) of the contact section 10 and at the rear of the contact section 10, and an upper top wall 15 that is bent inward from an upper end of the other side wall 13, so that a tab or post-mating contact can be accommodated therein.
- a spring contact member 16 is provided that extends forward and downward from the lower top wall 14b at the rear and of the contact section 10 and makes spring engagement with the mating contact, and a contact projection 18 that engages the mating contact is formed by punching in the forward portion of the base member 11.
- a relief slot 17 is formed in the forward portion of the upper top wall 15 and provides relief for the spring contact member 16 when the spring contact member 16 engages the mating contact and flexes upward. Since relief slot 17 is formed in the upper top wall 15, engagement of the free end of the spring contact member 16 with the upper top wall 15 can be avoided while keeping the vertical height of the contact section 10 low. Whereas contact section 10 is shown as being formed as a substantially box-shaped contact section, it would also be possible to form a circular-shaped contact section.
- Latching section 20 has flexible latch member 25 bent so that it rises upward toward the rear from the upper top wall 15 of the contact section 10 and latches to a connector housing (not shown).
- Contact 1 also includes a pair of side walls 22 and 23 extending rearward from the respective side walls 12 and 13 of the contact section; latch member protective section 21 comprising an outside wall portion 21a that extends upward from one of the side walls 22, and whose upper end protrudes upward beyond the free or upper end of the flexible latch member 25; and an inside wall portion 21b that is folded downward from the upper end of the outside wall portion 21a. Outside and inside wall portions 21a, 21b extend alongside one another and are preferably in engagement.
- latch member protective section 21 is constructed from two metal plates (i.e., outside wall portion 21a and inside wall portion 21b connected thereto) latch member protective section 21 is structurally strong in the inside-outside direction (i. e., the left-right direction in FIG. 4). Accordingly, there is little likelihood that the latch member protective section 21 will be bent in the inside-outside direction during the electrical wire connection operation, or during the installation of the contact in the connector housing. Thus, there is no loss of the flexible latch member protective function, and this prevents the electrical wire from becoming entangled with the flexible latch member 25 and also prevents reverse insertion during contact insertion.
- Latching section 20 has an anti-overstress member 24 bent toward the other side wall 23 from the inside wall portion 21b of the latch member protective member 21, and capable of engaging the underside of the flexible latch member 25. Accordingly, in cases where the flexible latch member 25 flexes downward to an excessive degree, the free end of the flexible latch member 25 engages the upper surface of the anti-overstress member 24, so that deformation of the flexible latch member 25 can be prevented. Furthermore, since the anti-overstress member 24 is not formed by being cut and raised from one of the side walls 22 and 23 constituting the latching section 20, but is instead formed by being bent from the inside wall portion 21b that is bent from the outside wall portion 21a, there is no decrease in the strength of the side walls 22 and 23.
- anti-overstress member 24 may also be mounted on or fastened to the surface of the other side wall 23. If this is done, both ends of the anti-overstress part 24 will be supported; in such a case, therefore, the strength of the anti-overstress member 24 against bending is increased, and deformation of the anti-overstress member itself is prevented.
- Anti-overstress member 24 may also be disposed on the other side wall 23.
- the latching section is equipped with a latch member protective section comprising an outside wall portion that extends upward from one of the side walls of the contact section, and whose upper end protrudes upward beyond the free end of the flexible latch member, and an inside wall portion, that is folded downward from an upper end of the outside wall portion.
- the latch member protective section is constructed from two metal plates, and is therefore structurally strong in the inside-outside direction. As a result, there is little likelihood that the latch member protective section will be bent in the inside-outside direction during the electrical wire connection operation, or during the installation of the electrical contact in the connector housing.
- the latching section is equipped with an anti-overstress member that is bent toward the other side wall from the inside wall portion of the latch member protective section, and that is capable of engaging the underside of the flexible latch member. Accordingly, in cases where the flexible latch member flexes downward to an excessive degree, the flexible latch member engages the anti-overstress member, so that overstress and deformation of the flexible latch member can be prevented.
- the anti-overstress member is not formed by being cut and raised from one of the side walls constituting the latching section, but is instead formed by being bent from the inside wall portion that is bent from the outside wall portion, there is no decrease in the strength of the side walls.
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Description
The present invention relates to an electrical
contact that has a contact section that mates with a
mating contact, and an electrical wire connection section.
More specifically, the present invention relates to an
electrical contact provided with a flexible latching
member that is latchable to a connector housing.
Such a contact is disclosed in DE-A-4 131 470.
A conventional electrical contact shown in FIGS.6A,
6B and disclosed in Japanese Utility Model Laid-Open No.
145492/77 has a contact section 110 that mates with a
mating contact (not shown); a wire crimp section that
includes a wire barrel 131 and an insulation barrel 132
and is connected with an electrical wire (not shown) by
crimping thereto; and a latching section 120 disposed
between the contact section 110 and the wire crimp section
130, and that is latched to a connector housing (not
shown). The electrical contact 100 is formed by stamping
and forming a metal sheet.
Among these sections, the contact section 110 is
formed substantially in the shape of a box that has a base
member 111, a pair of side walls 112, that are raised from
both sides of the base member 111, and top plates 113,
that are bent inward from the side walls 112 so that a tab
or post-mating contact can be accommodated therein. A
plurality of spring contact members 114,115 engage the
mating contact and are disposed so that the spring contact
members extend rearward and approach each other from the
front ends of the base member 111 and top plates 113
(i.e., the left end in FIG. 6B).
The latching section 120 has a flexible member 121
that is cut and raised from base member 111 so that
flexible latch member 121 rises upward as shown in FIG.
6B) toward the rear from the base member 111, and a pair
of side wall portions 122 extending rearward from the
respective side walls 112 of the contact section 110, and
whose upper ends are located beyond the free end of the
latch member 121. The side wall portions 122 prevent the
electrical wire from becoming entangled with the latch
member 121 during crimping, and also act to prevent
reverse insertion of the electrical contact 100 when the
electrical contact 100 is inserted and held in the
connector housing.
However, in this conventional electrical contact 100,
since the side wall portions 122 of the latching section
120 are respectively constructed from a single metal
sheet, side wall portions 122 are structurally weak in the
direction perpendicular to the plane of the page in FIG.
6B). As a result, the side wall portions 122 may bend
inward or outward during wire crimping or during contact
insertion, so that the protective function of the side
wall portions 122 with respect to the latch member 121 can
be deleteriously affected, as well as the function of
side wall portions 122 in terms of preventing reverse
insertion of the electrical contact 100.
Furthermore, in such a conventional electrical
contact 100, there is nothing that engages the latch
member 121 in cases where the latch member 121 flexes
downward to an excessive degree. Accordingly, in the case
of excessive downward flexing of the latch member 121,
overstress cannot be prevented, and deformation of the
latch member 121 may occur.
Accordingly, a feature of the present invention is to
provide, in a simple form, an electrical contact in which
a latch member protective section protecting a flexible
latch member and preventing reverse insertion of the
electrical contact into a connector housing, is
structurally strengthened, and the contact is equipped
with an anti-overstress member that prevents overstress of
the flexible latch member.
An electrical contact of the present invention
comprises a contact section having a spring contact
member, a latching section having a flexible latch member,
and a latch member protective section, wherein the latch
member protective section includes an outside wall portion
extending upward from a side wall of the latch member
protective section, an inside wall portion extending
downward from an upper end of the outside wall portion,
and an anti-overstress member extending from an inner end
of the inside wall portion toward the other side wall of
the latch member protective section so that the anti-overstress
member can be engaged by the flexible latch
member.
The invention will now be described by way of example
with reference to the accompanying drawings in which:
FIGURE 1 is a plan view that shows an electrical
contact of the present invention together with a carrier
strip.
FIGURES 2 and 3 are right-side and front views of the
electrical contact shown in FIG. 1.
FIGURES 4 and 5 are cross-sectional views taken along
lines 4-4 and 5-5 in FIGS. 2 and 1 respectively.
FIGURES 6A and 6B show a conventional electrical
contact with FIG. 6A being a perspective view of the
electrical contact, while FIG. 6B is a longitudinal cross-sectional
view of the electrical contact taken along line
6B-6B of FIG. 6A.
As shown in FIGS. 1 to 5, electrical contact 1 has a
contact section 10, that mates with a mating contact (not
shown), an electrical wire connection or crimp section 30
that includes a wire barrel 31 and an insulation barrel
32, and that is to be electrically connected to an
electrical wire, and a latching section 20, that is
disposed between the contact section 10 and wire crimp
section 30. Contact 1 is formed by stamping and forming a
metal sheet, and in FIGS. 1 and 2, the contact is
connected to a carrier strip 40 that is cut away after
contact 1 has been manufactured, electrically connected to
an electrical wire or inserted into a connector housing.
Latching section 20 has an anti-overstress member 24
bent toward the other side wall 23 from the inside wall
portion 21b of the latch member protective member 21, and
capable of engaging the underside of the flexible latch
member 25. Accordingly, in cases where the flexible latch
member 25 flexes downward to an excessive degree, the free
end of the flexible latch member 25 engages the upper
surface of the anti-overstress member 24, so that
deformation of the flexible latch member 25 can be
prevented. Furthermore, since the anti-overstress member
24 is not formed by being cut and raised from one of the
side walls 22 and 23 constituting the latching section 20,
but is instead formed by being bent from the inside wall
portion 21b that is bent from the outside wall portion
21a, there is no decrease in the strength of the side
walls 22 and 23.
Furthermore, the anti-overstress member 24 may also
be mounted on or fastened to the surface of the other side
wall 23. If this is done, both ends of the anti-overstress
part 24 will be supported; in such a case,
therefore, the strength of the anti-overstress member 24
against bending is increased, and deformation of the anti-overstress
member itself is prevented. Anti-overstress
member 24 may also be disposed on the other side wall 23.
In the electrical contact of the present invention,
the latching section is equipped with a latch member
protective section comprising an outside wall portion that
extends upward from one of the side walls of the contact
section, and whose upper end protrudes upward beyond the
free end of the flexible latch member, and an inside wall
portion, that is folded downward from an upper end of the
outside wall portion. Accordingly, the latch member
protective section is constructed from two metal plates,
and is therefore structurally strong in the inside-outside
direction. As a result, there is little likelihood that
the latch member protective section will be bent in the
inside-outside direction during the electrical wire
connection operation, or during the installation of the
electrical contact in the connector housing. Thus, there
is no loss of the flexible latch member protective
function that prevents the electrical wire from becoming
entangled with the flexible latch member, or of the
function that prevents reverse insertion when the
electrical contact is inserted into the connector housing.
Furthermore, the latching section is equipped with an
anti-overstress member that is bent toward the other side
wall from the inside wall portion of the latch member
protective section, and that is capable of engaging the
underside of the flexible latch member. Accordingly, in
cases where the flexible latch member flexes downward to
an excessive degree, the flexible latch member engages the
anti-overstress member, so that overstress and deformation
of the flexible latch member can be prevented. Also,
since the anti-overstress member is not formed by being
cut and raised from one of the side walls constituting the
latching section, but is instead formed by being bent from
the inside wall portion that is bent from the outside wall
portion, there is no decrease in the strength of the side
walls.
Claims (6)
- An electrical contact comprising a contact section (10) having a spring contact member (16), a latching section (20) having a flexible latch member (25), and a latch member protective section (21), characterized in that:
the latch member protective section (21) includes an outside wall portion (21a) extending upward from a side wall (22) of the latch member protective section, an inside wall portion (21b) extending downward from an upper end of the outside wall portion (21a), and an anti-overstress member (24) extending from an inner end of the inside wall portion (21b) toward the other side wall (23) of the latch member protective section (21) so that the anti-overstress member (24) can be engaged by the flexible latch member (25) . - An electrical contact as claimed in claim 1, wherein the upper end of said outside wall portion (21a) protrudes upward beyond the free end of the flexible latch member (25).
- An electrical contact as claimed in claims 1 and 2, wherein said spring contact member (16) is cut out from a lower top wall (14b) and extends forwardly toward a front end of said contact section (10).
- An electrical contact as claimed in claims 1-3, wherein a free end of said spring contact member (16) is bent toward an upper top wall (15) of said contact section (10) .
- An electrical contact as claimed in claim 4, wherein said upper top wall (15) includes a slot (17) to receive the free end of said spring contact member (16).
- An electrical contact as claimed in claim 1, wherein the outside wall portion (21a) and the inside wall portion (21b) extend alongside one another.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31546996A JP3221557B2 (en) | 1996-11-12 | 1996-11-12 | Electrical contacts |
| JP31546996 | 1996-11-12 | ||
| PCT/US1997/020497 WO1998021784A1 (en) | 1996-11-12 | 1997-11-11 | Electrical contact |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0938758A1 EP0938758A1 (en) | 1999-09-01 |
| EP0938758B1 true EP0938758B1 (en) | 2001-01-24 |
Family
ID=18065738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP97948230A Expired - Lifetime EP0938758B1 (en) | 1996-11-12 | 1997-11-11 | Electrical contact |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0938758B1 (en) |
| JP (1) | JP3221557B2 (en) |
| CN (1) | CN1104754C (en) |
| AU (1) | AU5433498A (en) |
| DE (1) | DE69703989T2 (en) |
| WO (1) | WO1998021784A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3361308B2 (en) * | 1999-12-28 | 2003-01-07 | タイコエレクトロニクスアンプ株式会社 | Female contact and electrical connector using the same |
| DE20013570U1 (en) | 2000-08-08 | 2001-01-11 | Leopold Kostal GmbH & Co KG, 58507 Lüdenscheid | Contact element for plug connections |
| US7497721B2 (en) * | 2006-09-14 | 2009-03-03 | Tyco Electronics Corporation | Tool extractable contacts for electrical connectors |
| DE202006017447U1 (en) * | 2006-11-14 | 2007-01-11 | Stocko Contact Gmbh & Co. Kg | Flat plug sleeve consists of conductor connecting sectin and socket-shaped contact region for complementary contact blade, with side of second plate-shaped second contact zone connection in industrial applications |
| JP2009117112A (en) * | 2007-11-05 | 2009-05-28 | Sumitomo Wiring Syst Ltd | Terminal metal fitting |
| KR102570265B1 (en) | 2016-04-26 | 2023-08-24 | 삼성에스디아이 주식회사 | Battery pack |
| EP3451467B1 (en) * | 2017-09-01 | 2022-02-23 | Tyco Electronics France SAS | Electric contact of sheet metal having a plastically elongated latching tongue and/or limit stop and a method for producing the same |
| US10826233B1 (en) * | 2019-05-23 | 2020-11-03 | Te Connectivity Corporation | Resilient latch with low stress concentrations |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1463751A (en) * | 1974-05-03 | 1977-02-09 | Amp Inc | Electrical tab receptacle |
| GB1543587A (en) * | 1976-12-14 | 1979-04-04 | Cannon Electric Great Britain | Electrical contacts |
| US4781628A (en) * | 1987-10-22 | 1988-11-01 | General Motors Corporation | Female electrical terminal |
| DE4131470A1 (en) * | 1991-09-21 | 1993-04-01 | Kostal Leopold Gmbh & Co Kg | Integral electric plug contact member - has contact and terminal regions connected via intermediate region with mirror symmetrical spring locking tongues |
| GB9124572D0 (en) * | 1991-11-20 | 1992-01-08 | Amp Gmbh | Electrical terminal having improved retention means |
-
1996
- 1996-11-12 JP JP31546996A patent/JP3221557B2/en not_active Expired - Fee Related
-
1997
- 1997-11-11 DE DE69703989T patent/DE69703989T2/en not_active Expired - Fee Related
- 1997-11-11 EP EP97948230A patent/EP0938758B1/en not_active Expired - Lifetime
- 1997-11-11 WO PCT/US1997/020497 patent/WO1998021784A1/en active IP Right Grant
- 1997-11-11 AU AU54334/98A patent/AU5433498A/en not_active Abandoned
- 1997-11-11 CN CN 97199619 patent/CN1104754C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| WO1998021784A1 (en) | 1998-05-22 |
| EP0938758A1 (en) | 1999-09-01 |
| JP3221557B2 (en) | 2001-10-22 |
| DE69703989D1 (en) | 2001-03-01 |
| AU5433498A (en) | 1998-06-03 |
| DE69703989T2 (en) | 2001-06-13 |
| JPH10144378A (en) | 1998-05-29 |
| CN1237280A (en) | 1999-12-01 |
| CN1104754C (en) | 2003-04-02 |
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