Horological mechanism comprising a structure bearing at least one first device and/or one second device for guiding the pivoting of an arbor of a mobile component about an axis of rotation, and comprising at least one braking device which is separate and remote, in the direction of said axis of rotation, from any pivoting guiding device (4; 5) comprised in said mechanism, said braking device comprising at least one braking mobile component comprising at least one resilient strip (3; 31; 32) arranged so as to exert a mechanical braking force on said arbor, said at least one braking mobile component extending substantially perpendicular to said axis of rotation, and being mounted such that it is trapped between said structure and a bolt comprised in said mechanism, and being capable of moving at least in a plane perpendicular to said axis of rotation, relative to said structure and to said arbor, characterised in that - either all of the bearing forces on said arbor of all of said resilient strips (3; 31; 32) comprised in said braking mobile component are exerted within a single angular sector having a centre angle (α) of less than 180° relative to said axis of rotation, so as to allow for relative mobility between said braking mobile component and said arbor in a direction of mobility that lies within said angular sector, - or said braking mobile component comprises a straight or convex first resilient strip arranged so as to tangentially brake said arbor and the direction whereof defines a direction of mobility that is perpendicular to said axis of rotation, and, on the side opposite said first resilient strip relative to said axis of rotation, at least one second resilient strip which is arranged so as to allow for relative mobility between said braking mobile component and said arbor in said direction of mobility, said second resilient strip being: ∘ either single, and straight or convex, and arranged so as to tangentially brake said arbor substantially parallel to said first resilient strip, ∘ or wavy similar to that of a hairpin and comprising at least one resilient notch that is deformable in a direction perpendicular to said axis of rotation and to said direction of mobility. - either all of the bearing forces on said arbor of all of said resilient strips (3; 31; 32) comprised in said braking mobile component are exerted within a single angular sector having a centre angle (α) of less than 180° relative to said axis of rotation, so as to allow for relative mobility between said braking mobile component and said arbor in a direction of mobility that lies within said angular sector, - or said braking mobile component comprises a straight or convex first resilient strip arranged so as to tangentially brake said arbor and the direction whereof defines a direction of mobility that is perpendicular to said axis of rotation, and, on the side opposite said first resilient strip relative to said axis of rotation, at least one second resilient strip which is arranged so as to allow for relative mobility between said braking mobile component and said arbor in said direction of mobility, said second resilient strip being: ∘ either single, and straight or convex, and arranged so as to tangentially brake said arbor substantially parallel to said first resilient strip, ∘ or wavy similar to that of a hairpin and comprising at least one resilient notch that is deformable in a direction perpendicular to said axis of rotation and to said direction of mobility. ∘ either single, and straight or convex, and arranged so as to tangentially brake said arbor substantially parallel to said first resilient strip, ∘ or wavy similar to that of a hairpin and comprising at least one resilient notch that is deformable in a direction perpendicular to said axis of rotation and to said direction of mobility.