The invention concerns a dial intended to be mounted in a watch case, the dial comprising a plate made of a fragile material, said plate defining a horizontal plane and comprising at least one housing defining a point of attachment for at least one foot formed of a body and a head arranged to rest inside said at least one housing, characterized in that the foot includes a circular slot arranged to receive a ring-like element made of a shape memory alloy able to move from a retracted position to an open position in which the foot is mechanically held in said housing.

The invention concerns a dial intended to be mounted in a watch case, the dial comprising a plate made of a fragile material, said plate defining a horizontal plane and comprising at least one housing defining a point of attachment for at least one foot formed of a body and a head arranged to rest inside said at least one housing, characterized in that the foot includes a circular slot arranged to receive a ring-like element made of a shape memory alloy able to move from a retracted position to an open position in which the foot is mechanically held in said housing.

A dial plate (1) for a timepiece is designed to be mounted on a connection ring (2), and has a first, lower surface (12) designed to be oriented towards the interior of a timepiece, an opposite second, upper surface (13) designed to be on view, and a third surface (11) connecting the first and second surfaces, forming a peripheral contour of the dial plate. The third, peripheral contour surface (11) includes a section which passes via a plane perpendicular to the second surface (13), this section having a first part (11a) extending from the first, lower surface (12) to the second, upper surface (13) of the dial plate (1), in a direction which is non-perpendicular to the first, lower surface (12).

A dial plate (1) for a timepiece is designed to be mounted on a connection ring (2), and has a first, lower surface (12) designed to be oriented towards the interior of a timepiece, an opposite second, upper surface (13) designed to be on view, and a third surface (11) connecting the first and second surfaces, forming a peripheral contour of the dial plate. The third, peripheral contour surface (11) includes a section which passes via a plane perpendicular to the second surface (13), this section having a first part (11a) extending from the first, lower surface (12) to the second, upper surface (13) of the dial plate (1), in a direction which is non-perpendicular to the first, lower surface (12).

A device (10) for fastening an external or display element (20) onto a horological structure (100), including a retaining key (1) including a post (2) fastened to the structure (100) and a head (9) with a truncated flange (3) having a first lip (31) cooperating by bearing, in a blocking manner, with a face (41) of a fastening element (4) integral with this display element (20), which first lip (31) is delimited by non-coplanar edges (51, 52), this retaining key (1) includes, joined to each edge (51, 52) and radially retracted relative to the periphery (30) of the first lip (31), a second lip (6) having an upper surface (68) which is, at each edge (51, 52), tapered relative to the upper surface (38) of the first lip (31).

A device (10) for fastening an external or display element (20) onto a horological structure (100), including a retaining key (1) including a post (2) fastened to the structure (100) and a head (9) with a truncated flange (3) having a first lip (31) cooperating by bearing, in a blocking manner, with a face (41) of a fastening element (4) integral with this display element (20), which first lip (31) is delimited by non-coplanar edges (51, 52), this retaining key (1) includes, joined to each edge (51, 52) and radially retracted relative to the periphery (30) of the first lip (31), a second lip (6) having an upper surface (68) which is, at each edge (51, 52), tapered relative to the upper surface (38) of the first lip (31).

A system for fastening and/or extracting a dial disposed on a support. The dial includes a holding portion configured to bring the dial against the support and an extracting portion configured to move the dial away from the support. The system includes a movable organ configured to displace or be displaced between a fastening position and an extraction position. The movable organ includes a holding surface configured to cooperate with the holding portion so as to bring the dial against the support and an extraction surface configured to cooperate with the extraction portion so as to move the dial away from the support.

A system for fastening and/or extracting a dial disposed on a support. The dial includes a holding portion configured to bring the dial against the support and an extracting portion configured to move the dial away from the support. The system includes a movable organ configured to displace or be displaced between a fastening position and an extraction position. The movable organ includes a holding surface configured to cooperate with the holding portion so as to bring the dial against the support and an extraction surface configured to cooperate with the extraction portion so as to move the dial away from the support.

A timepiece including a case that houses a main plate of a movement surmounted by a dial, and a support including fastening studs arranged on an upper face of the main plate for mounting the dial. The dial and the support include an angular locking mechanism for locking an angular position of the dial on the support, and the dial is assembled to the main plate by at least one flexible fastening element integral with the dial and arranged in the plane of the dial.

A timepiece including a case that houses a main plate of a movement surmounted by a dial, and a support including fastening studs arranged on an upper face of the main plate for mounting the dial. The dial and the support include an angular locking mechanism for locking an angular position of the dial on the support, and the dial is assembled to the main plate by at least one flexible fastening element integral with the dial and arranged in the plane of the dial.