CONNECTOR FOR CONNECTING ELECTRICAL WIRES TO ELECTRONIC BOARDS IN DOMOTIC NETWORKS

Abstract

An electrical connector for transmitting low-voltage signals among electronic units in domotic networks comprising a box-like connection shell, forming internally at least one receptacle for a corresponding electrical terminal; the terminal constituted by two parts, a first part for fixing to one or more electrical wires and a second part for reversible coupling to a connection pin to be coupled to an electronic board. The first part comprises a plate on which a through hole is formed centrally, within the plate. The through hole is constituted by a first portion for insertion of the electrical wires and a second portion for connection to wires, which opens onto the first portion and has two converging internal edges for stripping and contact with the wires. The second part of the terminal is constituted by two converging wings, protruding from a connection bridge.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Further characteristics and advantages of the invention will become better apparent from the following detailed description of a preferred but not exclusive embodiment thereof, illustrated by way of non-limiting example in the accompanying drawings, wherein:

FIG. 1 is a perspective view of a connector according to the invention, in which the electrical terminals are partially external to the receptacles so as to match the step for insertion and crimping of the wires;

FIG. 2 is a perspective view of an electrical terminal of a connector according to the invention;

FIG. 3 is a sectional view of a connector, taken along the line III-III of FIG. 6;

FIG. 4 is a sectional view, taken along the line IV-IV of FIG. 6, of two connectors according to the invention arranged side by side;

FIG. 5 is a sectional view of a portion of a connector taken along the line V-V of FIG. 3;

FIG. 6 is a sectional view, similar to FIG. 5, of a connector with an electrical terminal which is partially external to the receptacle, so as to match the step for the insertion and crimping of the wires;

FIG. 7 is a front view of a connector according to a different embodiment with respect to the preceding figures;

FIG. 8 is a sectional view of the connector of FIG. 7, taken along the line VIII-VIII of FIG. 7;

FIG. 9 is a view of the electrical terminal to be used in the connector of FIGS. 7 and 8;

FIG. 10 is a view of the box-like connection shell of the connector of FIGS. 7 and 8.

Claims

1. An electrical connector for transmitting low-voltage signals among electronic units or for transmitting low power levels for wiring domotic networks, comprising: a box connection shell with a connection face, which is shaped like a parallelepiped and forms internally at least one receptacle; a corresponding electrical terminal accomodatable in said at least one receptable, said at least one receptacle having an opening which is formed on the connection face of said box connection shell and a transverse access hole which is formed on a face thereof which is perpendicular to said connection face, said access hole being adapted for passage therethrough of an end of at least one electrical wire for connection to the electrical terminal accommodated in said at least one receptacle; a connection pin, said electrical terminal being constituted by two parts, of which a first part for fixing to the at least one electrical wire and a second part that is reversible coupleable to said connection pin, said first part being constituted by a laminar body which is folded so as to form a transverse cross-section which has a quadrangular profile; a plate constituting at least one side of said profile and on which a through hole is formed centrally, said through hole being delimited completely within said plate and being constituted by two portions, of which a first portion in which at least one electrical wire is insertable and a second portion for connection to said at least one wire, inserted in said first portion, said second portion opening onto said first portion and having two internal edges thereof which at least partially converge for stripping and contact with said at least one electrical wire, said second part of the electrical terminal being constituted by a bridge and two wings which at least partially converge and protrude from said bridge for connection to one end of said laminar body, said bridge protruding in a direction of insertion of the at least one electrical wire in said through hole, said two wings protruding substantially in the same direction as said plate; a shell abutment formed on said box connection shell for delimiting positioning of said at least one, inserted, electrical wire between said abutment and said converging internal edges of said through hole of the terminal.

2. The electrical connector of claim 1, wherein said electrical terminal is a monolithically formed single body obtained by blanking and bending sheet metal, and is constituted by said two parts, said first part being constituted by said laminar body folded so as to form a transverse cross-section having a quadrangular profile in which two mutually opposite sides are constituted by two of said plates, which are parallel and substantially identical and are arranged so as to face each other correspondingly, said bridge being joined to an end of said laminar body that lies further outward with respect to a bottom of said at least one receptacle of the connection shell in which the laminar body is inserted, a passage being provided on a common base of said wings and being adapted to allow insertion of the pin and consequent locking between said wings.

3. The electrical connector of claim 1, wherein said at least one receptacle for accommodating a corresponding said electrical terminal is constituted by two parallel seats, respectively a first seat for accommodating said first part of said electrical terminal and a second seat for accommodating said second part of the electrical terminal, and by a dividing wall, said first and second seats being divided by said dividing wall, which forms on its own upper edge a bridge abutment for said bridge for connection between said first and second parts of the electrical terminal.

4. The electrical connector of claim 3, wherein said shell abutment formed on said box connecting shell is constituted by an anvil body, which protrudes from the bottom of said first seat toward said opening of the receptacle and is shaped substantially complementarily to an internal space of said first part of said electrical terminal.

5. The electrical terminal of claim 4, wherein said anvil body has a concave head.

6. The electrical connector of claim 1, wherein the first portion of said through hole of said terminal is arranged, upon assembly of the connector, so as to match up with said transverse access hole.

7. The electrical connector of claim 1, wherein said electrical terminal is a monolithically formed single body obtained by blanking and bending sheet metal and is constituted by said two parts, said first part being constituted by said laminar body, folded so as to form a transverse cross-section which has a quadrangular profile in which a single side is constituted by said plate, said bridge being joined to an end of said laminar body that lies further inward with respect to a bottom of said at least one receptacle of the connection shell in which the laminar body is inserted, said wings protruding in the opposite direction with respect to the direction of insertion of the terminal in said at least one receptacle.

8. The electrical connector of claim 7, wherein said at least one receptacle of a corresponding said electrical terminal is constituted by two parallel seats, respectively a first seat for accommodating said first part of said electrical terminal and a second seat for accommodating said second part of the terminal, said second seat being provided with and closed by a flap which is pivoted to the box shell by way of an elastically deformable strap which is monolithic with respect to said box-like shell, said flap having at least one through entrance hole for said connection pin, said through entrance hole being aligned with a space comprised between said wings, said bridge abutting against a bottom of said second seat.

9. The electrical connector of claim 8, wherein said at least one through entrance hole has a cylindrical portion which is higher than said flap is thick.

10. The electrical connector of claim 9, wherein said shell abutment is constituted by at least one tooth, which protrudes from at least one lateral edge of said transverse access hole in a direction which lies transversely to a direction of insertion of said at least one electrical terminal in said box shell, said at least one tooth dividing said transverse access hole into a first part, which is aligned with said first portion of the through hole of said electrical terminal and a second part which substantially corresponds to a stripping region of said second portion of said through hole of said electrical terminal, said at least one tooth being beveled in order to facilitate passage of said at least one electrical wire from said first part to said second part during assembly.

11. The electrical connector of claim 10, comprising two of said teeth, which are arranged on mutually opposite lateral edges of said transverse access hole.

12. The electrical connector of claim 2, wherein a distance from an axis of said passage between said at least partially converging wings of said outermost terminals of the connector to an outer face of a nearest side wall is equal to half a distance between axes of said passages of contiguous terminals, which corresponds to half a distance between axes of said pins.

13. The electrical connector of claim 12, wherein said transverse access hole is provided completely surrounded by a wall in which the hole is provided.

14. The electrical connector of claim 2, wherein a bottom of said at least one receptacle is substantially closed by a closure wall which is monolithic with the rest of said box connection shell.

15. The electrical connector of claim 14, wherein faces of said box connection shell are provided closed, except for said connection face and the perpendicular face on which said transverse access hole is provided.