Electrical connectors – Contact comprising cutter – Insulation cutter
Patent
1988-06-01
1989-06-20
Pirlot, David
Electrical connectors
Contact comprising cutter
Insulation cutter
29857, 29867, 29748, H01R 424
Patent
active
048405795
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a slotted connection arrangement for piercing the insulation of and retaining one or more electric wires, and also to a tool for connecting wires in such an arrangement.
Such connection arrangements are usually implemented for interconnecting wires in junction-block type members or for connecting wires to electrical apparatuses.
Conventionally, each connection arrangement comprises a wire-stripping and retaining slot provided in a thin conducting part, with the slot being provided at one of its ends with a flared opening for facilitating longitudinal insertion into the slot of a wire to be connected which is disposed transversely relative thereto and thereby simultaneously cutting through the insulation around the wire. The core of the wire which is locally stripped by the opening to the slot comes into contact with the edges of said slot which clamp onto the core, thereby simultaneously providing electrical continuity between the wire and the conductive part and retaining the wire, while the insulating sheath of the wire is clamped between the edges of a sheath-clamping opening which face the slot for stripping and retaining the wire and which are provided in an insulating housing in which the conductive part is generally received.
In order to connect a wire to such an arrangement, it is necessary to apply an insertion force on the wire and this generally requires a force-multiplying tool, which is normally required to be simple, for example a lever.
This type of tool which serves to develop an adequate force suffers from the drawback of being inaccurate and sometimes dangerous for the connection arrangement when it is used by users whose strength, skill, or attention vary considerably.
Because of this, it is desirable to design connection arrangements and tools which ensure that connections of uniform quality are obtained at reasonable expense.
To this end, the present invention provides, firstly, a slotted connection arrangement for an electric wire, wherein at least one connection part is held in an insulating housing provided with at least one opening extending over a slot for stripping and retaining the core of the wire and for providing electrical connection and which is located along a wall of said connection part, said opening enabling a wire to be connected to be inserted transversely over a wire-stripping opening to the slot and also enabling the insulating sheath of the wire to be subsequently held fast. According to a characteristic of the invention the housing, which is provided with at least one insertion orifice for a rigid moving insertion blade belonging to an external tool, said tool being intended to slide along the slot while a wire is being inserted, is also provided with a device for positioning the tool via the insertion orifice, which device is constituted by a projection having the corresponding insertion orifice provided in the middle thereof and suitable for being received by translation blade, the inside of the insertion orifice being provided with latching rims for moving fixing elements carried by the end of the tool and suitable for penetrating into the insertion orifice prior to the insertion blade in order to latch onto the rims and thereby fix the tool relative to the insulating housing while said insertion blade is being actuated.
The invention also provides a connection tool having a rigid wire-insertion blade which is displaceable along a guide duct between a position in which said blade is retracted inside the duct in the tool and a position in which one of its ends projects beyond the tool, together with means for placing the tool on an insulating housing of a connection arrangement in an operating position over an insertion orifice of said housing for inserting the blade.
According to a characteristic of the invention, the connection tool comprises a wire-inserting blade exit end arranged to fit by translation over the outside of a projection of the housing with a blade insertion orifice located in the middle of the projection, the c
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patent: 4716651 (1988-01-01), Kloiber et al.
Boissonnet Alain
Heng Jean-Paul
Ruiz Ariel
CGEE Althom
Pirlot David
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