Zentrifugal-Vorzündungsvorrichtung für Zündteiler für Brennkraftmaschinen

Dispositif d'avance centrifuge pour distributeur d'allumage de moteur à combustion interne

Centrifugal advance device for an internal-combustion engine ignition distributor

Abstract

1. A centrifugal advancing device for an ignition distributor of an internal combustion engine of the kind comprising a plate (5) fixed to the control shaft (1) of the distributor on which the fly-weights (7) are articulated and which is elastically connected to a fixed plate (11) of a rotating component (4) of the device for triggering the ignition by the intermediation of springs (13) the ends of which are hooked on the one hand to pegs (12) arranged on the plate (5) fixed to the control shaft (1) and on the other hand to pegs (9) arranged on the fixed plate of the rotating component (4) ; stops (101) cooperating with the pegs (9) which pass trough windows (52) made in the plate (5) in order to limit the angular movement of the plate (11) relative to the plate (5) ; stops (54) to limit the movement of the fly-weights (7) ; stops which retain the fly-weights in the position of zero advance ; and finally a spacing washer (10) obtained by moulding plastic material, characterized in that the stops (101) are made in one piece with the spacing washer (10), fixed beneath the plate (5), at the end of the guiding windows (102) made in the said washer (10) diametrically opposite each other and concentric with the axis of the control shaft in correspondence with the windows (52) in the plate (5), the arrangement being such that the pegs (9) passing through the windows (52) in the plate (5) are adapted to move in the guiding windows (102) through a pre-determined amplitude.
Ce dispositif constitué principalement d'un plateau (5) qui supporte des masses centrifuges (7) et comporte des butées (54) de limitation de débat des masses (7) et des butées (101) de limitation du décalage angulaire d'un des éléments (4) du dispositif de commande de déclenchement de l'allumage est caractérisé en ce que les butées (101) sont rapportées dans des logements (51) réalisés dans le plateau (5) et sont obtenues, lors d'une unique opération de moulage de matériau plastique, solidairement avec une rondelle de frottement (10) fixée sous le plateau (5) entre ce plateau (5) et le boîtier (2) du distributeur d'allumage.

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Patent Citations (3)

    Publication numberPublication dateAssigneeTitle
    DE-582527-CAugust 17, 1933Joergen Skafte RasmussenSelbsttaetige Zuendzeitpunktverstellung fuer rechts- und linkslaufende Verbrennungsmotoren
    FR-1519700-AApril 05, 1968Ducellier & CieDispositif d'avance centrifugé pour distributeur d'allumage de moteur à combustion interne
    US-3828579-AAugust 13, 1974Lucas Electrical Co LtdCentrifugal mechanism

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    Publication numberPublication dateAssigneeTitle