A regulating member for a horological movement including an inertial mass, for example a balance, a balance spring, and an index-assembly system for adjusting the rate of the balance spring, the index-assembly system including a stud-holder including a first portion and a second portion, the first portion being movable relative to the second portion, wherein the regulating member includes locking device configured to block the second portion of the stud-holder in one position with respect to a plate of the movement.

A regulating member for a horological movement includes an inertial mass, for example a balance, a balance spring, and an index-assembly system for adjusting the rate of the balance spring, the balance spring including a coiled strip and a device for adjusting the rigidity of the balance spring fitted with a resilient element arranged in series with the coiled strip, the index-assembly system being configured to adjust the rate of the regulating member with a resolution lower than or equal to 1 second per day.

A regulating member for a horological movement includes an inertial mass, for example a balance, a balance spring, and an index-assembly system for adjusting the rate of the balance spring, the balance spring including a coiled strip and a device for adjusting the rigidity of the balance spring fitted with a resilient element arranged in series with the coiled strip, the index-assembly system being configured to adjust the rate of the regulating member with a resolution lower than or equal to 1 second per day.

An elastic retaining member for fixing a timepiece component on a support element includes an opening into which the support element can be inserted, and rigid arms and elastic arms defined between connection areas of the member. The rigid arms and the elastic arms are configured to ensure elastic clamping of the support element in the opening, each of the rigid arms being provided with two flat contact areas of the retaining member and configured to cooperate with corresponding convex contact portions of the support element.

A balance-spring stud holder includes a clamping part defining three contact zones intended to press against a lateral wall of a projecting part of the balance bridge, a first contact zone being connected to a second contact zone by a first part and to the third contact zone by a second part of the clamping part. The first part has a first stiffness at a second median point of the second contact zone, relative to a first median point of the first contact zone, which is greater than three times a second stiffness that the second part has at a third median point of the third contact zone relative to the first median point of the first contact zone. The first stiffness can be seven times greater than the second stiffness.

A balance-spring stud holder includes a clamping part defining three contact zones intended to press against a lateral wall of a projecting part of the balance bridge, a first contact zone being connected to a second contact zone by a first part and to the third contact zone by a second part of the clamping part. The first part has a first stiffness at a second median point of the second contact zone, relative to a first median point of the first contact zone, which is greater than three times a second stiffness that the second part has at a third median point of the third contact zone relative to the first median point of the first contact zone. The first stiffness can be seven times greater than the second stiffness.

An elastic retaining member for fixing a timepiece component on a support element includes an opening into which the support element can be inserted, and rigid arms and elastic arms defined between connection areas of the member. The rigid arms and the elastic arms are configured to ensure elastic clamping of the support element in the opening, each of the rigid arms being provided with a single flat contact area and configured to cooperate with a corresponding convex contact portion of the support element.

An elastic retaining member for fixing a timepiece component on a support element includes an opening into which the support element can be inserted, and rigid arms and elastic arms defined between connection areas of the member. The rigid arms and the elastic arms are configured to ensure elastic clamping of the support element in the opening, each of the rigid arms being provided with a single flat contact area and configured to cooperate with a corresponding convex contact portion of the support element.

A horology device that includes a first component having at least one plastically deformable portion, and a second component provided with a surface, notably a surface of revolution and/or of guidance and/or of attachment of the first component relative to the second component, the first component being fixed permanently to the second component by plastic deformation of the at least one portion against the second component, in a plane perpendicular or substantially perpendicular to an axis of said surface of the second component.

The invention relates to an elastic retaining member (1) for fixing a timepiece component (2) on a support element (3), comprising an opening (5) into which said support element (3) can be inserted, the retaining member (1) comprising rigid arms (6) and elastic arms (7) defined between connection areas (9) contributing to ensure elastic clamping of the support element (3) in the opening (5) each rigid arm (6) being provided with two flat contact areas (8) of the retaining member (1) able to cooperate with corresponding convex contact portions (10) of the support element (3).