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
  • H01R43/00—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors
  • H01R43/16—Apparatus or processes specially adapted for manufacturing, assembling, maintaining, or repairing of line connectors or current collectors or for joining electric conductors for manufacturing contact members, e.g. by punching and by bending
• • 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

Definitions

• the invention relates to a female electrical contact and in particular an electrical contact of the type comprising a zone for connection to an electrical conductor and a contact termination with a complementary male contact.
• Numerous female electrical contacts are known and in particular contacts whose contact termination with a complementary contact comprises elastic contact blades disposed inside a protective structure forming a protective cage either complete around the blades or partial around 1 'front or 1' back of the blades.
• a known female electrical contact of the monobloc type with protective cage is described, for example, in document EP 0 310 487.
• This monobloc contact is formed from a single metal flank and comprises two contact blades folded from elements of ceiling of the cage, along axes parallel to the main contact axis, in a 180 ° fold, the blades thus comprising parts for connection to the ceiling element conforming to the internal profile of the cage at the level of the ceiling element and side walls of the cage.
• shutters for prestressing the elastic contact blades and for guiding the complementary male contact are produced by folding from the front of the side walls of the cage.
• This contact provides very good protection of the contact blades and significant stiffness of the cage but requires a large metal strip width for its realization.
• cage wall elements comprising support zones for the locking lugs coming from the housing are connected to the contact body by thin branches bent at the tops of a frame introduces a risk of breaking of these branches and significant constraints at the level of these branches in particular in the case of contacts used in automotive applications for which a contact section of the order of one to four square millimeters is frequent.
• a female electrical contact cut folded in one piece having longitudinally a rear area for connection to an electrical conductor, a protective cage having a floor two side walls, and, on the front, a contact termination with a complementary male contact, the contact termination comprising at least one elastic contact blade provided with an end portion directed towards the front of the contact, the side walls being contiguous to the floor and folded along a longitudinal axis, contact for which said blade elastic contact is made from a strip connected to the rear of a side wall of the cage and extends backwards before folding.
• the blade is formed from a strip cut obliquely relative to the floor.
• the contact may include a shutter for holding the terminal part of the pre-stressed blade, this shutter being folded from the front of a side wall of the cage.
• At least one of the side walls is extended by a sidewall intended to form a ceiling by folding along longitudinal axes, the cage thus having four sides.
• the contact may include means for holding in a contact-carrying housing, these means possibly comprising either at least one window formed in a side wall or at least one lug produced on one of the sides of the cage.
• the contact comprises two elastic contact blades facing each other.
• the contact blades are folded along an axis which is not perpendicular to the longitudinal axis of the contact.
• the blades are folded along a perpendicular axis and then warped to extend parallel to the longitudinal axis of the contact.
• the blades can, after folding, comprise from the rear towards the front a section bearing against the lateral face to which they are connected, a section deviating from the lateral face, a convex section forming a contact zone and a terminal section d 'support of a flap folded from the front of the side face to which they are connected.
• At least one of the side walls is extended by a sidewall intended to form a ceiling by folding along at least one longitudinal axis, this sidewall being extended towards the rear by a tab intended after folding to form a bearing wall of a complementary locking element set back from the folding zones of the blades.
• Figure 1 A view of a metal strip element after cutting and before folding intended to produce a first example of contact according to the invention
• Figure 2 a perspective view from the front of a first example of contact according to the invention
• FIG. 3 A view of a metal strip element after cutting and before folding intended to produce a second example of contact according to the invention
• Figure 4 A perspective view from the front of a second example of contact according to the invention
• the female electrical contact 1 visible for example in FIG. 2 is of the cut-out folded monobloc type comprising longitudinally a rear zone 2 for connection to an electrical conductor.
• connection such as insulation displacement termination or solder pin
• the area shown here is of the crimp type with wings 50, 51 crimping on a stripped termination of a conductor and wings 52, 53 of crimping on the conductor insulation.
• the contact shown in FIGS. 2 or 4 comprises a protective cage 3 comprising the floor 4, two side walls 5, 6, a contact termination with a male contact complementary located on the front and inside the cage, the contact termination being constituted in the example represented by two elastic contact blades 8, 9 each being provided with an end portion 10, 11 directed towards the before contact.
• the contact is made from a single side as shown in Figures 1 and 3 and for which the side walls 5, 6 are extensions laterally adjacent to the floor, along an axis transverse to contact. To form the sides of the cage, the extensions are folded along an axis parallel to the longitudinal axis of the contact.
• the elastic contact blades are produced from lamellae connected to the rear of the side walls and extending before folding towards the rear and at an angle to the floor. This arrangement minimizes the developed surface of the contact, which makes it possible to minimize the waste of material during cutting and to increase the contact density by reducing the pitch between contacts on the strip.
• the blades being after cutting oriented towards the rear of the contact, these are folded back from the front. Due to their biased positioning, provision is made to fold them along an axis which is not perpendicular to the longitudinal axis of the contact, which makes them parallel to the longitudinal axis of the contact after folding. So that the blades do not protrude vertically after folding the side wall to which they are connected, the blades have a width less than the height of the wall.
• the angle made by the folding axis with an axis perpendicular to the longitudinal axis of the contact is half the angle made by the blade with the longitudinal axis of the contact before folding.
• the blades after folding, comprise from the rear towards the front a first section 30 bearing against the lateral face to which they are connected. This section creates a double wall area with the corresponding side wall.
• this section 30 As an extension of this section 30 the blades have an intermediate section 31 deviating from the lateral face.
• This section forms the elastic part of the blade and will condition the contact pressure with a complementary pin or pallet contact.
• the contact zone with the complementary contact is produced by a convex section 32.
• the contact blade ends forward by an end section 11 bearing against a flap 20, 21 folded down from the front of the side face to which the blade is connected. The presence of this component maintains and pre-stresses the blade.
• the flaps fix the minimum thickness of the spindle or of the pallet received between the blades and control the minimum contact force of the blades.
• the flaps protect the contact blades and guide the spindle when it is inserted into the cage.
• the latter may have tenons 60, 61 intended to be received in holes 62, 63 made in the floor and a ceiling of the cage.
• the latter has a ceiling 7 visible in Figures 2 and 4.
• the ceiling is made entirely from the side wall 6 of the contact, this wall being extended by a sidewall 24 forming the ceiling 7 by folding along a longitudinal axis, the cage thus having four sides.
• This fin then consists of an extension of the side wall 5.
• the means for maintaining the contact in an insulating housing for receiving this contact may comprise at least one window 25 formed on one of the sides of the cage or, as described above, at least one lug 26 produced on one of the sides of the cage.
• the window (s) may be located on the side walls of the cage behind the blades, the lug (s) possibly being located on one or more arbitrary faces of the cage.
• the ceiling 7 can also be produced in two parts 22, 23, each of the two parts being produced in lateral extension of the side walls 5, 6. This configuration corresponds to FIGS. 1 and 2
• a lug 40 is provided in extension towards the rear of an element of ceiling on the side constituting the contact.
• This lug possibly provided with a stud 41 intended to be embedded in a cutout 42 is found after folding back from the feet of the blades and protects the latter.
• the invention is not limited to the examples described in the figures and in particular applies to an electrical contact provided with any rear connection zone and can be applied to a contact for which a single blade is disposed towards the rear .

Landscapes

• Engineering & Computer Science (AREA)
• Manufacturing & Machinery (AREA)
• Connector Housings Or Holding Contact Members (AREA)
• Coupling Device And Connection With Printed Circuit (AREA)

Applications Claiming Priority (3)

Publications (1)

Family

ID=8865096

Family Applications (1)

Country Status (6)

Families Citing this family (3)

Family Cites Families (12)

• 2001
  • 2001-06-29 FR FR0108840A patent/FR2826785B1/fr not_active Expired - Fee Related
• 2002
  • 2002-06-28 JP JP2003509590A patent/JP2004531045A/ja active Pending
  • 2002-06-28 US US10/481,930 patent/US7223134B2/en not_active Expired - Lifetime
  • 2002-06-28 KR KR10-2003-7002852A patent/KR20040014962A/ko not_active Application Discontinuation
  • 2002-06-28 WO PCT/EP2002/007190 patent/WO2003003524A2/fr not_active Application Discontinuation
  • 2002-06-28 EP EP02740757A patent/EP1399991A2/de not_active Withdrawn

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events