Patent EA-001671-B1 (EA)
Title: Connection accessory and terminal equipped with such an accessory
Inventor: DICONNE ROBERT
IPC: H01R4/48
Filed: 1999-04-16
Abstract: 1. A connection accessory for connection of an electrical conductor such as an aluminum cable to a contact strip of an electrical apparatus such as a circuit breaker, comprising a pad made of a conducting material, said pad being designed to be fixed in removable manner onto the contact strip and to receive a conductor designed to be clamped against the pad by a clamping means in order to establish the electrical contact between the contact strip and the cable, characterized in that the pad (10) is secured to the contact strip (4) by means of a support, said support comprising a flexible blade (11) fixed to the pad (10) via one of its ends (11b) and comprising a curved part (11 a) underneath the pad (10) extending in a direction appreciably parallel to said pad (10), so as to enable flexible clamping of the contact strip (4) between the pad (10) and the curved part (11a). 2. The accessory according to claim 1, characterized in that the pad (10) presents an appreciably U-shaped transverse cross section. 3. The accessory according to claim 1 or 2, characterized in that the above-mentioned pad (10) comprises, on its face (14) facing the conductor (6), serrations (12) extending perpendicularly to the longitudinal direction of the conductor (6). 4. The accessory according to any one of the foregoing claims, designed to be fitted in the tunnel of an electrical terminal, characterized in that it comprises in addition at least one lug (11c, 11d, 11e) extending from the plane of the curved part (11a) in an inclined direction with respect to the plane and in a direction away from the pad (10), said at least one lug (11c, 11d, 11e) pressing against a wall of the tunnel so as to absorb the expansion differences between the different elements taking part in clamping. 5. The accessory according to claim 4, characterized in that the at least one lug (11c, 11d, 11e) is molded in the same material as the blade (11). 6. The accessory according to claim 4 or 5, characterized in that the support comprises three lugs (11c, 11d, 11e) arranged in a triangle. 7. The accessory according to any one of the claims 1 to 6, characterized in that the curved part (11a) comprises a boss (11f), on its face facing the pad (10), designed to enable the pad (10) to be fitted onto contact strips of different thickness. 8. A terminal comprising a tunnel (5) equipped with an accessory (9) according to any one of the claims 1 to 7. 9. The terminal according to claim 8, comprising a fixed tunnel (5), said tunnel (5) comprising an orifice for insertion of a clamping screw (7) for securing the conductor (6), said terminal being equipped with an accessory (9) according to any one of the claims 1 to 7. 10. The terminal according to claim 9, comprising a movable tunnel (13) movable between a position clamping the conductor (6) onto the contact strip (4) and a disconnection position, said terminal being equipped with an accessory (9) according to any one of the claims 1 to 7. 11. A terminal comprising a tunnel, characterized in that the tunnel (5) comprises a recess (5a) in its bottom wall designed to receive the lug(s) (11c, 11d, 11e) of an accessory (9) according to claim 4.