Elastic articulation for horological assembly

An arrangement forming an elastic articulated linkage between first and second components of a horological assembly,

• wherein the arrangement comprises at least one link shaft and at least one torsion spring working in torsion mode between the first and second components to exert an elastic return force,
• the torsion spring comprising at least one guiding surface to guide, with lesser play, the movement of at least one of the first and second components of the horological assembly,
• wherein the torsion spring is a helical torsion spring, and
• wherein the at least one guiding surface is at least one of (i) an area of the helical torsion spring comprising an outer diameter greater than that of the area or areas of the helical torsion spring comprising turns which fulfill the elastic return function by torsion torque, and (ii) an area of the helical torsion spring comprising an axial cutout having an inner diameter less than an inner diameter of the area or areas of the helical torsion spring comprising turns.

A horological assembly, comprising an arrangement forming an elastic articulated linkage between first and second components of a horological assembly,

• wherein the arrangement comprises at least one link shaft and at least one torsion spring working in torsion mode between the first and second components to exert an elastic return force,
• the torsion spring comprising at least one guiding surface to guide, with lesser play, the movement of at least one of the first and second components of the horological assembly,
• wherein the horological assembly is a clasp for a wrist watch bracelet and at least one of the first and second components is a locking device,
• wherein the clasp comprises at least two blades that move relative to one another, the locking device being arranged at a free end of a moving blade, the arrangement being arranged between the moving blade and the locking device, and
• wherein a first part of the torsion spring has a first angular blocking element for cooperation with first key forms of a first link of the clasp.

A horological assembly, comprising an arrangement forming an elastic articulated linkage between first and second components of a horological assembly,

• wherein the arrangement comprises at least one link shaft and at least one torsion spring working in torsion mode between the first and second components to exert an elastic return force,
• the torsion spring comprising at least one guiding surface to guide, with lesser play, the movement of at least one of the first and second components of the horological assembly,
• wherein the horological assembly is a clasp for a wrist watch bracelet and at least one of the first and second components is a locking device,
• wherein the clasp comprises at least two blades that move relative to one another, the locking device being arranged at a free end of a moving blade, the arrangement being arranged between the moving blade and the locking device, and
• wherein the at least one torsion spring includes a first torsion spring and a second torsion spring working in torsion, and wherein the first and second torsion springs linked to one another by being torsionally connected to one another.

A horological assembly, comprising an arrangement forming an elastic articulated linkage between first and second components of a horological assembly,

• wherein the arrangement comprises at least one link shaft and at least one torsion spring working in torsion mode between the first and second components to exert an elastic return force,
• the torsion spring comprising at least one guiding surface to guide, with lesser play, the movement of at least one of the first and second components of the horological assembly,
• wherein the horological assembly is a clasp for a wrist watch bracelet and at least one of the first and second components is a locking device,
• wherein the clasp comprises at least two blades that move relative to one another, the locking device being arranged at a free end of a moving blade, the arrangement being arranged between the moving blade and the locking device, and
• wherein at least one lateral end of the torsion spring comprises a circular cutout having an inner diameter less than the diameter of turns of a part of the spring fulfilling the elastic return function.

An arrangement forming an elastic articulated linkage between first and second components of a horological assembly,

• wherein the arrangement comprises at least one link shaft and at least one torsion spring working in torsion mode between the first and second components to exert an elastic return force,
• the torsion spring comprising at least one guiding surface to guide, with lesser play, the movement of at least one of the first and second components of the horological assembly,
• wherein the torsion spring has at least two parts each comprising a respective angular blocking element, said at least two parts being arranged at any of at least one end and a central area of the torsion spring,
• wherein the torsion spring comprises a torsion wire oriented along a main axis of the elastic torsion return force.

An arrangement forming an elastic articulated linkage between first and second components of a horological assembly,

• wherein the arrangement comprises at least one link shaft and at least one torsion spring working in torsion mode between the first and second components to exert an elastic return force,
• the torsion spring comprising at least one guiding surface to guide, with lesser play, the movement of at least one of the first and second components of the horological assembly,
• wherein the torsion spring has at least two parts each comprising a respective angular blocking element, said at least two parts being arranged at any of at least one end and a central area of the torsion spring,
• wherein the at least one guiding surface comprises a portion of a substantially cylindrical radial surface arranged on a part of the torsion spring and cooperating with a corresponding portion of a substantially cylindrical surface of at least one of the first and second components.

An arrangement forming an elastic articulated linkage between first and second components of a horological assembly,

• wherein the arrangement comprises at least one link shaft and at least one torsion spring working in torsion mode between the first and second components to exert an elastic return force,
• the torsion spring comprising at least one guiding surface to guide, with lesser play, the movement of at least one of the first and second components of the horological assembly,
• wherein the torsion spring has at least two parts each comprising a respective angular blocking element, said at least two parts being arranged at any of at least one end and a central area of the torsion spring,
• wherein the elastic return force of the torsion spring tends to return one of the first and second components toward the other of the first and second components.

An arrangement forming an elastic articulated linkage between first and second components of a horological assembly,

• wherein the arrangement comprises at least one link shaft and at least one torsion spring working in torsion mode between the first and second components to exert an elastic return force,
• the torsion spring comprising at least one guiding surface to guide, with lesser play, the movement of at least one of the first and second components of the horological assembly,
• wherein the torsion spring has at least two parts each comprising a respective angular blocking element, said at least two parts being arranged at any of at least one end and a central area of the torsion spring,
• wherein the torsion spring is arranged between two bracelet links, and the at least one guiding surface comprises a first guiding surface cooperating with the first link and a second guiding surface cooperating with the second link.