Hinged Component And Mechanical System Comprising Such A Component

A hinged component with one degree of freedom, comprising three concentric rings, rotatable with respect to one other about a central axis, defining a friction interface therebetween, and including:

• an outer ring having an inner friction surface,
• an inner ring having an outer friction surface and an inner friction surface provided to receive a movable element guided by the component in rotation, oscillation and/or translation, and
• an intermediate ring located between the outer and inner rings;
• a first friction interface being defined between the intermediate ring and the outer ring, a second friction interface being defined between the intermediate ring and the inner ring, the component having five friction surfaces,
• the first and second friction interfaces between the outer, inner and intermediate rings receiving a lubricant and at least one of the friction surfaces comprises arrangements capable of acting as a reserve of lubricant;
• wherein:
• the component comprises a seal on opposite sides of the component arranged to prevent leaks of lubricant out of the first friction interface.