EP2595007B1 - Timepiece assembly with centring and attachment of a plate relative to a middle case. - Google Patents

Description

Field of the invention

The invention relates to a watch assembly comprising at least one plate, a middle part arranged to cooperate in abutment with said plate, and means for fixing said at least one plate to said middle part, said fixing means comprising at least one screw arranged to cooperating in the screwed position with at least one axis housing that comprises said plate, to indirectly immobilize by means of a flange said middle with respect to said plate, each said flange being arranged to transmit the clamping force of a said screw taking support at the same time, on the one hand a first range that includes said plate in the vicinity of each said housing, and on the other hand on a second range that includes said middle in the vicinity of each said housing.

The invention also relates to a timepiece or jewelery comprising at least one such watch ensemble.

The invention relates to the fields of watchmaking, jewelery, and jewelery, and more particularly the field of timepieces worn by the user, wristwatches, gusset watches or pendants.

Background of the invention

The fixing of a clockwork movement is generally done by the cooperation of a plate of this movement with a middle part or an assembly frame of the timepiece box, by means of two or three flanges. , depending on the size of the movement, these flanges being flat or folded. A clamping screw holds each flange by friction. This method of attachment is imperfect, first of all because it provides no centering, including angular, and also because it is very sensitive to shocks and accelerations, which can cause some movements to move angularly, until drop out of their box during a shock, and remain held only by the rod, resulting in distorted components and wear. Tightening the clamping screws on the flanges, alone, is enough to move the movement angularly.

These defects thus generated are unacceptable in many timepieces, and especially in those which have ancillary functions controlled by pushers, such as chronographs. The pushing forces on the pushers issued by the user are often important, and if the geometry is distorted, the pushers and the associated mechanisms undergo additional efforts, and therefore a high wear. This is particularly the case for a single-pusher chronograph, which is sensitive to this kind of geometric defects.

A good relative maintenance between movement and box is a guarantee of longevity, and the problem is serious. Curiously, few solutions have been made to this problem. Most are based on an elastic retention of movement in the box, as in the case of the patent CH 482 238 in the name of Claude Baillod , with an elastic ring element in the periphery of the box, or in the patent EP 1 970 779 in the name of Richemont , with a joint effecting the centering of the movement during its compression during the casing, or the patent application EP 2,275,882 in the name of ETA SA with an annular piece pushing a casing ring on the middle part. Specific centering solutions have been proposed, notably by the patent CH 160 803 in the name of Aegler Rolex with an eccentric centering, but with a plane-to-plane friction, which is likely to be disturbed during an impact. A patent CH 229 462 in the name of Henri Collomb and Tavannes Watch proposed centering and holding by a protruding spring-ring bearing on the inner wall of the box, working with friction. A patent CH 229,232 of the same applicants describes the retention of movement by a spring CH 265 254 in the name of Henri Collomb proposes a centering of the movement by a flush fitted with force. These different designs have not solved the problem of shock resistance in service, and the problem remains to this day.

The document DE 17 03 377 U in the name of JUNGHANS shows a flange support between a plate and a washer taking itself support on the middle part.

The document CH 619 345 A in the name of PERRET FRERES discloses a circumferential C-section gasket between a superimposed bottom and middle, and a casing ring carrying a movement and having tabs projecting radially from windows in the peripheral seal.

The document GB 2 022 877 A in the name of SUWA SEIKOSHA shows a flange maintaining a movement relative to a middle part, this flange being in an oblique wedging position.

The document US 865 656 A in the name of PORTER WILSON shows a configuration with a spring clamp and alternating supports on the flange and the middle part. The document CH 282 451 A on behalf of MOVADO WATCHES describes a similar provision. The document US 2 364 440 A in the name of HASSELMANN describes a maintenance of the clip-type movement. The document CH 334 000 in the name of TAUBERT describes a support on a slope, with a screw playing a role of eccentric radial adjustment of the lock which is distinct.

Summary of the invention

The invention proposes to overcome the problems and limitations of the prior art by proposing a reliable solution guaranteeing the centering of a plate relative to a middle part, and ensuring the maintenance of this centering in time and in use, in particular during shocks.

For this purpose, the invention relates to a watch assembly according to claim 1.

According to a feature of the invention, said flange is independent of said screw, and comprises an upper bearing surface arranged to cooperate, in said assembled position and in a fully screwed position of said screw. in said housing, with a bottom bearing surface that includes said screw, at a contact surface of revolution relative to said axis of said housing.

According to a feature of the invention, said middle part comprises stop means arranged to cooperate with complementary abutment means that comprises said plate to limit the spacing of said middle relative to said plate, in said assembled position and in position completely. screwed of said screw into said housing.

According to a characteristic of the invention, any normal, at a point of said first range of said platen, tangent plane at this point to said range, passes through an axis parallel and remote from said axis of said housing, at a point which is located outside said housing on the side of said housing through which said screw is inserted into said housing.

According to a feature of the invention, said first range of said platen is of revolution about said axis.

According to a feature of the invention, said second span of said middle part is of revolution about an axis which is parallel to said axis of said housing in said assembled position, and all normal, at a point of said second span of said middle, at plan tangent at this point to said range passes through said axis, at a point which is located in said assembled position of said plate and said middle, outside said housing on the side of said housing by which said screw is introduced into said housing.

According to a feature of the invention, in said assembled position and in a fully screwed position of said screw in said housing, said axis of said second span of said middle part is remote from said axis of said first bearing surface of said platen, and said axis and said axis are parallel and on either side of said axis of said housing.

According to a characteristic of the invention, said flange comprises a bearing surface arranged to cooperate with a said first bearing surface of said plate, and with a second bearing surface of said middle part, of revolution about an axis perpendicular to said upper surface of said support and arranged to coincide, in said assembled position and fully screwed position of said screw in said housing, with said axis of said housing.

According to a feature of the invention, said flange comprises a bearing surface arranged to cooperate with a said first bearing surface of said plate, and with a second span of said middle, said bearing surface being of revolution about a flange axis perpendicular to said upper bearing surface and arranged to coincide, in said assembled position and in a fully screwed position of said screw in said housing, with said axis of said housing.

According to a feature of the invention, said bearing surface is reduced to a circular edge of revolution about said flange axis.

According to a characteristic of the invention, said flange comprises, connected with said bearing surface and on the opposite side to said upper bearing surface, a flank surface arranged to allow restricted angular mobility of said flange axis of said flange by relative to said axis of said housing of said screw, in assembled position and during screwing said screw in said housing.

According to a feature of the invention, said undercut surface is tapered at a flange clearance angle with respect to a plane perpendicular to said flange axis, said first span of said platen is tapered at a draft angle with respect to a plane perpendicular to said axis, said second span of said middle part is tapered at a draft angle with respect to a plane perpendicular to said axis, and said flange clearance angle is smaller, by a value of less than 2 °, than said angles of bare.

According to one characteristic of the invention, said platen constitutes a support for at least one watch movement, and said middle part is arranged to at least partially contain said movement.

The invention also relates to a timepiece or jewelery piece comprising at least one such watch ensemble, or a watch assembly where said plate constitutes a support for at least one jewelery and / or jewelery component, and wherein said caseband is arranged to at least partially contain said component.

Brief description of the drawings

• la figure 1 représente, de façon schématisée, partielle, et en coupe passant par l'axe d'une vis de maintien et de serrage d'une bride sur une platine et une carrure d'un ensemble d'horlogerie selon l'invention, dans une exécution préférée où cette bride comporte une surface d'appui de révolution réduite à une arête circulaire, qui appuie sur une portée conique que comporte cette platine, et sur une portée conique que comporte cette carrure, cet ensemble étant représenté en position assemblé et en position serrée de la vis dans son logement;
• les figures 1A et 1B représentent des détails de deux variantes de la figure 1, la figure 1A avec une carrure plus simple, et la figure 1B avec des jeux ménagés entre platine et carrure pour en rendre l'assemblage plus aisé ;
• la figure 2 représente l'ensemble de la figure 1, dans une position intermédiaire au cours du serrage de la vis, qui appuie sur la bride et la pousse sur les portées coniques, la figure 2A est un détail de cette figure 2;
• la figure 3 représente, de façon analogue à la figure 1, une variante où la surface d'appui de la bride est sensiblement torique ;
• la figure 4 représente un détail de la figure 1, au niveau de l'appui entre la bride et les portées coniques ;
• la figure 5 représente, de façon schématisée, partielle et en vue de dessus, uniquement la bride en appui sur les portées coniques ;
• la figure 6 représente, de façon schématisée, partielle et en vue de dessus, un exemple qui ne fait pas partie de l'invention revendiquée où une bride identique à celle de la figure 1 porte, du côté de la platine sur un plan incliné, et du côté de la carrure sur une portée conique ;
• la figure 7 est une section de la figure 6, selon un plan AA passant par l'axe de la vis ;
• la figure 8 représente, de façon schématisée, partielle et en vue de dessus, un exemple qui ne fait pas partie de l'invention revendiquée où une bride identique à celle de la figure 1 porte, du côté de la platine sur une portée conique, et du côté de la carrure sur un plan incliné ;
• la figure 9 est une section de la figure 8, selon un plan BB passant par l'axe de la vis ;
• la figure 10 représente, de façon schématisée, partielle, et en vue de dessus, un ensemble selon un exemple qui ne fait pas partie de l'invention revendiquée où la platine est maintenue centrée dans la carrure par trois jeux de plans inclinés, à chaque fois un sur la platine et un sur la carrure, sur chacun desquels repose en appui de serrage une bride similaire à celle de la figure 1 ;
• la figure 11 est une section partielle de la figure 10, selon un plan cc passant par l'axe de l'une des vis ;
• la figure 12 représente, de façon schématisée, partielle et en vue de dessus, une variante de l'invention où une bride identique à celle de la figure 1 porte, du côté de la platine sur une portée conique, et du côté de la carrure sur deux portées formant arêtes;
• la figure 13 schématise la répartition des points de contacts de la bride de la figure 12,
• la figure 14 représente, de façon analogue à la figure 1, une variante où la platine et la carrure comportent des portées toriques ou en calotte sphérique ;
• la figure 15 représente, de façon analogue à la figure 1, un exemple qui ne fait pas partie de l'invention revendiquée où la platine comporte une portée conique, et où la carrure comporte un plat recevant en appui une surface inférieure de la bride ;
• la figure 16 représente, de façon schématisée, partielle et en vue de dessus, les portées de la figure 15 ;
• la figure 17 représente, de façon schématisée, partielle et en vue de dessus, un exemple qui ne fait pas partie de l'invention revendiquée où la platine et la carrure présentent chacune une simple découpe à bord droit, avec les arêtes desquelles coopère une bride de forme particulière comportant un relief d'appui dont les arêtes sont en appui ponctuel sur les arêtes de ces découpes;
• la figure 18 représente, de façon schématisée, partielle et en vue de dessous, la face inférieure de la de la figure 17, comportant ce relief d'appui à arêtes ainsi que des doigts d'indexage pour orienter ces arêtes par rapport à l'interstice entre platine et carrure;
• la figure 18A représente une variante à profil de relief triangulaire d'une telle bride ;
• la figure 19 représente, de façon schématisée et en vue de dessus, un ensemble selon l'invention où l'arrêt en écartement entre la platine et la carrure est réalisé par les bords de celles-ci, diamétralement opposés aux bords portant des portées coniques sur lesquelles s'appuie la bride de centrage ;
• la figure 20 représente, sous la forme d'un schéma-blocs, une pièce d'horlogerie comportant un ensemble selon l'invention, illustré avec une platine portant un mouvement horloger, et deux brides coopérant chacune avec deux portées coniques ;
• les figures 21 à 30 illustrent différentes variantes pouvant être montées en combinaison les unes avec les autres.

Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the appended drawings, in which:

• the figure 1 represents, schematically, partially, and in section passing through the axis of a screw for holding and clamping a flange on a plate and a middle part of a clockwork assembly according to the invention, in one embodiment preferred where the flange comprises a bearing surface of revolution reduced to a circular edge, which bears on a conical bearing surface that includes this plate, and on a conical bearing surface that includes the middle, this assembly being shown in assembled position and in a tight position the screw in its housing;
• the Figures 1A and 1B represent details of two variants of the figure 1 , the Figure 1A with a simpler build, and the Figure 1B with play between platinum and middle to make the assembly easier;
• the figure 2 represents the whole of the figure 1 in an intermediate position during the tightening of the screw, which presses on the flange and pushes it on the conical bearing surfaces, the Figure 2A is a detail of this figure 2 ;
• the figure 3 represents, in a similar way to figure 1 a variant where the bearing surface of the flange is substantially toroidal;
• the figure 4 represents a detail of the figure 1 , at the level of the support between the flange and the conical bearing surfaces;
• the figure 5 represents, schematically, partially and in plan view, only the flange resting on the conical bearing surfaces;
• the figure 6 represents, schematically, partially and in plan view, an example which does not form part of the claimed invention where a flange identical to that of the figure 1 door, on the side of the plate on an inclined plane, and on the side of the middle part on a conical bearing;
• the figure 7 is a section of the figure 6 , according to a plane AA passing through the axis of the screw;
• the figure 8 represents, schematically, partially and in plan view, an example which does not form part of the claimed invention where a flange identical to that of the figure 1 door, on the side of the plate on a conical bearing, and on the side of the middle part on an inclined plane;
• the figure 9 is a section of the figure 8 , according to a plane BB passing through the axis of the screw;
• the figure 10 represents, schematically, partially, and in plan view, an assembly according to an example which does not form part of the claimed invention where the plate is kept centered in the middle part by three sets of inclined planes, each time one on platinum and one on the middle, on each of which rests in clamping support a flange similar to that of the figure 1 ;
• the figure 11 is a partial section of the figure 10 , according to a plane cc passing through the axis of one of the screws;
• the figure 12 represents, schematically, partially and in top view, a variant of the invention where a flange identical to that of the figure 1 door, on the side of the plate on a conical bearing, and on the side of the middle part on two bearing surfaces forming ridges;
• the figure 13 schematizes the distribution of the points of contact of the flange of the figure 12 ,
• the figure 14 represents, in a similar way to figure 1 , a variant where the plate and the middle part comprise toric bearings or spherical cap;
• the figure 15 represents, in a similar way to figure 1 an example which is not part of the claimed invention where the plate has a tapered bearing surface, and wherein the middle part comprises a plate receiving a lower surface of the flange;
• the figure 16 represents, schematically, partially and in plan view, the staves of the figure 15 ;
• the figure 17 represents, schematically, partially and in plan view, an example which does not form part of the claimed invention where the plate and the middle part each have a simple cut with a straight edge, with the edges of which cooperates a flange of particular shape having a relief support whose edges are in point support on the edges of these cuts;
• the figure 18 represents, schematically, partially and in view from below, the lower face of the figure 17 , including the raised bearing relief and indexing fingers for orienting these edges with respect to the interstice between platinum and middle;
• the figure 18A represents a variant with triangular relief profile of such a flange;
• the figure 19 represents schematically and in plan view, an assembly according to the invention wherein the stop spaced between the plate and the middle is formed by the edges thereof, diametrically opposed to the edges carrying conical bearing surfaces on which s presses the centering flange;
• the figure 20 represents, in the form of a block diagram, a timepiece comprising an assembly according to the invention, illustrated with a platen carrying a watch movement, and two flanges cooperating each with two conical bearing surfaces;
• the Figures 21 to 30 illustrate different variants that can be mounted in combination with each other.

Detailed Description of the Preferred Embodiments

The invention relates to the fields of watchmaking, jewelery, and jewelery, and more particularly the field of timepieces worn by the user, wristwatches, gusset watches or pendants.

The invention provides a reliable solution to ensure the centering of a plate relative to a middle, and ensure the maintenance of this centering in time and use, especially during shocks. The invention is here described in the more particularly illustrated application of a clock plate incorporated in a caseband, with screw fixing means cooperating with a housing of the plate. This description is in no way limiting, and the invention is applicable to any combination of two components that must be both well positioned and firmly held relative to each other. The skilled person knows without difficulty transpose the present description of the invention in the case where an enveloping part, here called middle, has a housing cooperating with the fixing means. Similarly, the application to a piece of jewelery or jewelry comprising two structural components, is easy because the invention is specifically designed for the reduced dimensions of a timepiece, and to withstand high stresses, especially in terms of acceleration, that must support a timepiece. The assembly safety and its maintenance over time provide, again, appreciable security when assembling a piece comprising jewelry elements.

Thus, the invention relates to a watch assembly 1. This set 1 comprises at least one plate 2, a middle part 4 arranged to cooperate in support with the plate 2, and fixing means 5 of the at least one plate 2 on the middle part 4.

The term "middle part" should not be interpreted in a limiting manner, the component thus designated can in particular be a casing ring, or similar.

These fixing means 5 comprise at least one screw 6 arranged to cooperate in the screwed position with at least one housing 7 of axis D0 that comprises the plate 2, to indirectly immobilize, via a flange 10, the middle part 4 relative to the plate 2. Each said flange 10 is arranged to transmit the clamping force of such a screw 6 by bearing on both, on the one hand a first bearing surface 8 that includes the plate 2 in the vicinity of each housing 7, and secondly on a second span 9 that includes the middle 4 in the vicinity of each housing 7.

According to the invention, the first bearing surface 8 is conical or spherical, and the second bearing surface 9 is conical or spherical.

According to the invention, the first bearing surface 8 and / or the second bearing surface 9 cooperates, in a so-called assembled position where the plate 2 and the middle part 4 are assembled to one another and in the fully screwed position of the screw 6 in the housing 7, with the flange 10 in at least one point and at most two surfaces or points.

By "surface" is meant here a related contact surface, which may consist of a surface area, or a line, or a point.

The geometry of the first bearing surface 8, of the second bearing surface 9, and of the screw 6 which cooperates with these two bearing surfaces, is designed so that the flange 10 is, in the assembled position corresponding to the complete screwing of the screw 6, rigorously perpendicular to the axis D0 of the housing 7.

The screw 6 is solicited only by the normal forces.

In a preferred embodiment, as can be seen in particular in figures 1 and 5 , the first bearing 8 cooperates with the flange 10 in at least one point and at most two points, and the second bearing 9 cooperates with the flange 10 in at least one point and at most two points.

The Figures 1, 2 , 3 , 4, 5 , 12, 13, 14 , illustrate preferred embodiments where the first bearing 8 cooperates with the flange 10 at two points, and the second bearing 9 cooperates with the flange 10 at two points, four points in total.

The figure 17 illustrates an example, where the plate and the middle part each have a simple cut with a straight edge, with the edges of which cooperates a flange of particular shape having a relief support whose edges are in point support on the edges of these cuts.

The Figures 6 to 9 illustrate examples, where the maintenance is done on one side by a single point, and on the other by two points, are in total three points. These three-point examples are preferably combined with means for holding in angular indexing, or else the fixing zones are distributed around the clockwork movement in such a way, for example in a triangle, that the angular position is ensured by virtue of their distribution on the timepiece.

The Figures 10 and 11 illustrate an example where the first span 8 cooperates with the flange 10 at one point, and the second span 9 cooperates with the flange 10 at one point, two points in total. As for the three-point examples, this example requires special means indexing, or, as illustrated here, a peripheral repetition of the fastening means 5, so as to ensure positioning and centering, ci by triangulation.

The example of Figures 15 and 16 illustrates the case of a support only on the plate in two points, while the support on the middle part is done traditionally on a flat. This example requires particular means of indexing, or else a peripheral repetition of the fastening means 5, so as to ensure the positioning and centering, in particular by triangulation.

The preferred variant is that in which the flange 10 cooperates twice in two points, with the first bearing 8, and the second bearing 9, four points in total. Of these four points it is necessary to subtract a degree of freedom in pivoting of the plate with respect to the middle part, the system is not hyperstatic, and is self-sufficient: a single thus equipped layout is enough to ensure a precise centering and a good maintenance. The support of the flange 10 on sloping section surfaces prevents slipping, and provides impact resistance.

The use of screws 6 is an economical and reliable embodiment of these fastening means 5. The centering and fixing are achieved in the tight position of the screw 6. Its screwing into the housing 7 ensures the self-centering of the flange 10 relative to the first bearing surface 8 and the second bearing 9, that the flange 10 tends to move away from each other during tightening of the screw. Of course, other means allow to exert an axial force pushing the flange 10 to the housing 7 and tending to straighten it, under the effect of an action in compression or traction. For example an irreversible mounting means such as the installation of a rivet through the flange 10 and the housing 7 can be an effective alternative on a cheap product. It is therefore clear that the use of screws 6 is a preferred embodiment, but in no way limiting. The remainder of the present description is limited, for the sake of simplicity, to the use of a screw as an axial force transmission vector at the flange 10 in a driving movement.

Preferably, according to the invention, the flange 10 is independent of the screw 6, and has an upper bearing surface 13, which is arranged to cooperate, in the assembled position and in the fully screwed position of the screw 6 in the housing 7, with a lower bearing surface 61 that includes the screw 6. The contact between the upper bearing surface 13 of the flange and the lower surface 61 of the screw 6 takes place at a contact surface 16, which is preferably of revolution relative to the axis D0 of the housing 7, or is performed at points or surfaces distributed on such a surface of revolution.

The self-centering system allows the flange 10 to have a position where its upper surface 13 is perpendicular to the axis D0 of the housing 7, preferably corresponding to a tapping of the plate 2. This avoids any disturbing torque which would be exerted in case of differential support on only one of the lateral surfaces constituted by the litters 8 and 9.

To perform the self-centering function, it is necessary that the radius RV, with respect to the axis D0, with which the lower surface 61 of the head of the screw 6 bears on the upper surface 13 of the flange 10, is greater than the maximum radius RP, with respect to this same axis D0, of the limit polygon P drawn by the envelope of the possible reaction forces of the ranges 8 and 9, as visible on the figures 2 and 2A . This limit polygon P arises from a small angular deflection preferentially imposed on the flange 10 relative to the bearing surfaces 8 and 9, by the construction of the latter. This displacement depends on the pair of friction materials between the flange 10 and the bearing surfaces 8 and 9, in the embodiment illustrated by the figures and corresponding to the numerical values given by way of non-limiting example in the present description, the coefficient friction is of the order of k = 0.15

The Figure 1A illustrates an embodiment of the invention with a middle part 4 of very simple profile.

In an embodiment as visible in Figures 1, 2 , and 3 , middle part 4 comprises stop means 42, which are arranged to cooperate with complementary abutment means 22 that includes plate 2, to limit the spacing of the middle part 4 with respect to plate 2, in the assembled position and in the fully screwed position of the screw 6 in the housing 7. These abutment means 42 and complementary abutment means 22 may be constituted by bearing faces, grooves and shoulder, or the like. The Figure 1B represents a variant with games formed between the plate 2 and the middle 4, at the stop means 42 and the complementary abutment means 22, to make assembly easier.

The figure 19 , which represents an assembly where the stop spaced between the plate 2 and the middle 4 is formed by the edges thereof, diametrically opposed to edges carrying conical bearing surfaces on which the flange is supported centering 10, also illustrates the use of a diametrically opposite end of the plate and the middle part to fulfill this function.

It is understood that the application of a driving force on the flange 10 tends to separate the first bearing 8 of the plate and the second bearing 9 of the middle part by moving them apart. The invention implements a particular geometry of these spans that tends to straighten the flange 10, that is to say to make its upper surface 13 perpendicular to the insertion direction, which is here the axis D0 of the housing 7 of the screw 6. The lower surface 61 of the screw 6 exerts a force on this upper surface 13, which is a torque which must tend to balance when tightening the screw. By limiting the contact between the flange 10 and the scopes at point contacts, the reaction of the bearing surfaces 8 and 9 to the forces applied by the flange 10 is normal to the plane tangent to the span at each point of support considered.

The free mounting of the flange 10 on the screw 6, as visible in the figures, then allows a self-centering of this flange 10, and to bring its upper surface 13 perpendicular to the axis D0, when tightening. the screw 6.

Also, for the realization of these staves, preferably, any normal N2 at a point of the first scope 8 of the plate 2, the tangent plane at this point to this range, passes through a parallel axis D2 and distant from the D0 axis of the housing 7 at a point which is located outside the housing 7 on the side of the housing 7 by which the screw 6 is inserted into the housing 7.

Preferably, the first bearing 8 of the plate 2 is of revolution about this axis D2.

In the same way, the second bearing 9 of the middle 4 is of revolution about an axis D4 which is parallel to the axis D0 of the housing 7 in the assembled position. And any normal N4, at a point of the second span 9 of the middle 4, tangent plane at this point to this range, passes through this axis D4, at a point which is located in the assembled position of the plate 2 and of the middle 4, outside the housing 7 on the side of the housing 7 by which the screw 6 is inserted into the housing 7.

Thus, preferably and as visible in particular on the figure 1 in the assembled position and in the fully screwed position of the screw 6 in the housing 7, the axis D4 of the second bearing 9 of the caseband 4 is distant from the axis D2 of the first bearing surface 8 of the plate 2, and the axis D4 and the axis D2 are parallel to each other and located on either side of the axis D0 of the housing 7.

In embodiments with less than four points of contact, or a contrario of more than four points of contact, between the flange 10 and the two bearing surfaces 8 and 9, the caseband 4 comprises an angular indexing means 41 in position in one direction angular relative to a complementary angular indexing means 21 of the plate 2 to which the middle 4 is coaxial in the assembled position. This angular indexing is done so as to define an angularly indexed position of the plate 2 relative to the middle part 4.

In this indexed position, and when the second span 9 is a sloped section surface, advantageously all normal, at a point of the second span 9 of the middle 4, the plane tangent at this point to this range, passes through the axis D4, at a point which is located in the assembled position of the plate 2 and the middle 4, outside the housing 7 on the side of the housing 7 by which the screw 6 is inserted into the housing 7.

Similarly, in the indexed position and when the first bearing surface 8 is a sloped section surface, advantageously all normal, at a point of the first bearing surface 8 of the plate 2, the plane tangent at this point to this range, passes through the D2 axis, at a point which is located in the assembled position of the plate 2 and the middle 4, outside the housing 7 on the side of the housing 7 by which the screw 6 is inserted into the housing 7.

In the preferred case of Figures 1, 2 , 4, and 5 the indexing in position comes from the bearing surfaces 8 and 9 which are each a conical surface, preferably of identical conicity.

Preferably, the flange 10 includes a bearing surface 19 arranged to cooperate with a first bearing surface 8 of the plate 2, and with a second bearing surface 9 of the middle part 4. This bearing surface 19 is of revolution around a flange axis D10 perpendicular to the upper bearing surface 13 and arranged to coincide, in the assembled position and in the fully screwed position of the screw 6 in the housing 7, with the axis D0 of the housing 7.

Advantageously, so as to favor point contacts at the flange 10, the flange 10 is a conical flange, and the bearing surface 19 is reduced to one edge. In the variant of Figures 1, 2 , 4, and 5 this edge 19 is always the same, regardless of the position of the flange 10, and is circular in revolution around the flange axis D10.

The configuration of the figure 3 also corresponds to a contact on one edge, but which is not the same according to the position of the flange with respect to the spans 8 and 9: the surface 19 is toric or spherical cap, and the bearing surfaces 8 and 9 are conical surfaces.

Advantageously, in order to prevent movements of too great amplitude of the flange 10, the flange 10 comprises, connected with the bearing surface 19 and the side opposite the upper bearing surface 13, a tapered surface 19B , which is arranged to allow restricted angular mobility of the flange axis D10 of the flange 10 relative to the axis D0 of the housing 7 of the screw 6, in the assembled position and during screwing of the screw 6 into the accommodation 7.

Preferably, this flank surface 19B is tapered at a flange clearance angle a10 with respect to a plane perpendicular to the flange axis D10. The first bearing surface 8 of the plate 2 is conical at a draft angle α2 with respect to a plane perpendicular to the axis D2. The second span 9 of the caseband 4 is tapered at a clearance angle α4 with respect to a plane perpendicular to the axis D4. The flange clearance angle a10 is smaller, with a deviation value of less than 2 °, and preferably close to 1 °, than the draft angle α2 and the draft angle a4. Preferably, these two angles α2 and α4 are chosen of equal value.

In a preferred embodiment, the flange clearance angle a10 has a value of 52 °, and the draft angle α2 and the draft angle a4 each have a value of 53 °. These values determine a value of the angle y which ensures that the maximum radius RP of the polygon P remains smaller than the support radius RV of the screw 6 on the flange 10, and, thus, that the self-centering conditions are always fulfilled.

In a preferred embodiment, the first bearing surface 8 of the plate 2 is conical at an angle α2 with respect to a plane perpendicular to the axis D2, in that the second bearing surface 9 of the middle part 4 is conical at a conical angle α4 by relative to a plane perpendicular to the axis D4 identical to the draft angle α2. And, in a plane perpendicular to the axis D0 of the housing 7 of the screw 6 and corresponding to the support of the flange 10 on the first bearing surface 8 and the second bearing 9, in the assembled and completely screwed position of the screw 6 in the housing 7, the radius R2 of the section of the first bearing 8 and the radius R4 of the section of the second bearing 9 have values between 0.91 and 0.97 times the value of the radius R0 of the span of the flange 10, at its bearing surface 19, with the first bearing surface 8 and the second bearing 9. Preferably, these two values are equal to and close to 0.95 times the value of the radius R0. And the eccentricity between the axis D2 and the axis D0 on the one hand, and between the axis D4 and the axis D0 on the other hand, have values between 0.03 and 0.05 times the value of the radius R0 of the range of the flange 10, and preferably close to 0.038 times the value of the radius R0.

Of course, in particular embodiments, the orders of magnitude of the respective diameters can be reversed, the eccentricity remains favorable to the stability of the mechanism.

Preferably, the contact between the contact surface 19 of the flange 10 and the first surface 8 is at two points P2A, P2B distant from an angle at the center 62 with respect to the axis D0 of the housing 7, the contact between the bearing surface 19 of the flange 10 and the second bearing 9 is made at two points P4A, P4B distant from an angle at the center 64 with respect to the axis D0 of the housing 7, and the value of each of the angles at center 62; 64, is between 53 ° and 118 °.

These angles 62; 64, depend on the geometry of the assembly, and in particular on the elements illustrated in FIG. figure 5 relative positions of the axes D0, D2 and D4, the diameters R2 and R4 of the cones of the bearing surfaces 8 and 9 in the plane where the support of the flange 10 takes place at the end of the tightening of the screw 6, the conical angles α2 and α4 of the cones of the plate 2 and the middle 4, the radius R0 of the flange 10 at the contact points, and again the thickness of the flange 10.

Thanks to the self-centering, the flange 10 remains, in the tight position of the screw 6, perpendicular to the axis D0 of the housing7. The flange 10 is stressed only by the normal forces, and works in friction. The eccentricity of the axes D2 and D4 with respect to the axis D0, and the difference of the diameters between the flange 10 and the bearing surfaces 8 and 9, allow a shape-free locking of the movement with the box, which solves the problem. posed.

Different variations of the invention are possible according to the profiles used, both for the contact surface 19 of the flange 10, and for the profiles of the bearing surfaces 8 and 9.

The Figures 1 to 5 illustrate the preferred embodiment of the invention with conical bearing surfaces 8 and 9 and a contact surface 19 in circular or toric edge in the case of the figure 3 . The figure 6 represents an example where a flange 10 with a circular edge contact surface 19 bears, on the side of the plate 2 on an inclined plane, and on the side of the middle part 8 on a conical bearing surface, and the figure 8 an example where the flange 10 carries the side of the plate 2 on a conical seat, and the side of the middle part 4 on an inclined plane.

The Figures 6 to 9 represent an example, of easy realization. However, the maintenance in friction of the flange, the side where it is on an inclined plane, is only in friction if it is perfectly centered angularly. Otherwise one works in friction on the side of this contact surface, which is less advantageous than the preferred variant of Figures 1 to 5 specific to the invention.

The figure 10 illustrates an example, with a set where the plate 2 is kept centered in the middle 4 by three sets of inclined planes, each time one on the plate 2 and one on the middle part 4, on each of which rests in clamping a flange 10 with contact surface 19 in circular ridge.

The figure 14 illustrates a variant of the invention in which the plate 2 and the middle part 4 comprise bearings 8 and 9 toric or spherical cap.

The figure 15 illustrates an example where the plate 2 comprises a conical bearing surface 8, and wherein the middle 4 comprises a plate 9 receiving in support a lower surface 19A of the flange 10. This solution is advantageous only if the flange 10 can come into abutment, by a side surface 19C, with a bearing surface 4C of the middle part.

The figure 12 illustrates an advantageous variant of the invention wherein a flange 10 with contact surface 19 in circular edge carries, on the side of the plate 2 on a scope 8 conical, and the side of the middle 4 on two bearing surfaces 9 forming edges. The figure 13 schematizes the distribution of the contact points P2A, P2B, P4A, P4B, of the flange 10 of the figure 12 , whose diagonals DA and DB of the quadrilateral formed by these four points intersect near the axis D0 of the housing 7.

A first way of considering the invention has been described above, with a flange 10 of simple shape, in particular of revolution, which cooperates with bearing surfaces 8 and 9 which are left surfaces or inclined planes, or the like.

A second way of considering the invention, and which can also be combined with the previous one, is to make a flange 10 which has bearing and contact edges with bearings of the plate and the middle part which can then be limited to their simplest expression: the figure 17 illustrates an example where the plate 2 and the middle 4 each have a simple cut with a straight edge, with the edges 8, 9, of which cooperates a flange 10 of particular shape comprising a bearing relief 17 whose edges are in point support on the edges 8, 9 of these cuts.

This flange 10 can be made in different ways, and in particular rigid or flexible. In the case where it is made rigidly, the contact surfaces with the edges of the plate 2 and the middle part 4 then constituting the staves, are essentially point contact surfaces, while they can be curvilinear or superficial if the flange 10 is made of flexible material.

The contact surface 19 of the flange 10 is then constituted by a protruding relief 17 protruding quadrangular or cruciform, or triangular star. The contact between the contact surface 19 of the flange 10 and the first surface 8 is at a point P2 or two points P2A, P2B. The contact between the bearing surface 19 of the flange 10 and the second bearing 9 is at a point P4 or two points P4A, P4B. And, when the contact between the flange 10 and the first bearing 8 and the second bearing 9 in fully screwed position of the screw 6 in the housing 7 is at four points, the diagonals DA; DB of the quadrilateral formed by the four points intersect in the vicinity of the axis D0 of the housing 7, and when the contact between the flange 10 and the first bearing surface 8 and the second bearing 9 in the fully screwed position of the screw 6 in the housing 7 is in three points, the center of gravity of the triangle formed by the three points is located in the vicinity of the axis D0 of the housing 7.

The figure 18 illustrates the underside of such a flange 10, including the support relief 17 with ridges, here quadrangular, and indexing fingers 18 for orienting these edges with respect to the gap between the plate 2 and the middle 4 . The figure 18A represents a variant with a triangular relief profile of such a flange 10.

• un excentrique chassé dans la platine, tel que visible sur la figure 20, laquelle représente une pièce d'horlogerie 100 comportant un ensemble selon l'invention, illustré avec une platine 2 portant un mouvement horloger 3, et deux brides 10 coopérant chacune avec deux portées coniques 8, 9;
• la figure 21 montre une carrure 4 avec un dégagement 40 de section semi-circulaire. La platine 2 comporte une nervure souple 25 périphérique bordée du côté intérieur de la platine par un dégagement 26. La bride 10 constitue un excentrique, qui, lors du serrage de la bride 10 dans son logement 7, vient en appui, par une extrémité 15 qu'elle comporte, sur une surface intérieure 27 de la nervure souple 25, de façon à venir bloquer deux surfaces de contact P4A, P4B, dans l'intérieur du dégagement 40 ;
• les figures 22A, 2B, 22C, montrent une bride 10 circulaire fendue avec cône intérieur. Elle coopère avec deux logements semi-cylindriques 20 et 40, sur la figure 22B selon une réalisation préférée les axes des cylindres ne coïncident pas avec l'axe de la vis 6. On a ici 4 zones de contact P4A, P4B, P2A, P2B ;
• la figure 23 montre l'application du même principe à des surfaces d'appui qui sont convexes au lieu d'être concaves, c'est alors la bride 10 qui comporte 4 zones de contact P4A, P4B, P2A, P2B dans une réalisation préférée ;
• la combinaison d'une bride flexible 10 telle que visible sur la figure 24, à 4 bras 17A, et d'une vis à tête conique dont le vissage a pour effet de faire s'écarter les 4 points de contact, le vissage a pour effet de déformer la périphérie de la bride 10, et d'assurer un serrage sur la périphérie. Cette disposition permet le verrouillage dans une ouverture cylindrique ;
• en figure 25, un ovale au lieu d'un excentrique, à pente intérieure conique, avantageusement en combinaison avec une fente dans une direction verticale dans la platine, permettant la transformation de tout effort de rotation en ablocage ;
• la notion de rondelle fendue (figures 22A, 22B, 22C, 25) peut s'appliquer dans les deux sens, avec une portée ou bien en cône femelle supérieur (figure 29), ou bien en cône mâle inférieur (figure 30) de façon à ce que, sous l'effort de vissage, la rondelle se ferme au lieu de s'ouvrir ;
• un escargot chassé dans la platine, encore meilleur qu'un excentrique simple, car permettant de garder deux points d'appui sans déformation angulaire ;
• une protubérance 21A en demi-cône mâle sur la platine saillant vers le dessus, une protubérance 22A similaire ou identique sur la carrure, en combinaison avec une bride coiffant l'une et l'autre et comportant une surface d'appui réduite à une arête circulaire, ou bien sous forme d'un cône femelle (figures 27 et 28). La figure 26 illustre un exemple de combinaison entre des surabondants mécanismes de positionnement et de fixation tels que décrits ci-dessus, en combinaison éventuelle avec des brides, un jonc d'indexage coopérant ave un ou plusieurs logements d'indexage angulaire 41, bague fendue 24.

Other variants are possible:

• an eccentric hunted in the platen, as visible on the figure 20 which represents a timepiece 100 comprising an assembly according to the invention, illustrated with a plate 2 carrying a watch movement 3, and two flanges 10 each cooperating with two conical bearing surfaces 8, 9;
• the figure 21 shows a middle 4 with a clearance 40 of semicircular section. The plate 2 comprises a flexible peripheral rib 25 bordered on the inner side of the plate by a clearance 26. The flange 10 constitutes an eccentric, which, when clamping the flange 10 in its housing 7, comes into support, by one end 15 that it comprises, on an inner surface 27 of the flexible rib 25, so as to block two contact surfaces P4A, P4B, in the interior of the clearance 40;
• the Figures 22A , 2B, 22C , show a split circular flange 10 with inner cone. It cooperates with two semi-cylindrical housings 20 and 40, on the figure 22B according to a preferred embodiment the axes of the cylinders do not coincide with the axis of the screw 6. There are here 4 contact areas P4A, P4B, P2A, P2B;
• FIG. 23 shows the application of the same principle to bearing surfaces which are convex instead of being concave, it is then the flange 10 which has 4 contact zones P4A, P4B, P2A, P2B in a preferred embodiment ;
• the combination of a flexible flange 10 as visible on the figure 24 , at 4 17A arm, and a screw with conical head whose screwing has the effect of spreading the 4 contact points, the screwing has the effect of deforming the periphery of the flange 10, and to ensure a clamping on the periphery. This arrangement allows locking in a cylindrical opening;
• in figure 25 an oval instead of an eccentric, with conical inner slope, advantageously in combination with a slot in a vertical direction in the plate, allowing the transformation of any rotational force into ablocking;
• the notion of split washer ( FIGS. 22A, 22B, 22C, 25 ) can be applied in both directions, with a range or in an upper female cone ( figure 29 ), or in a lower male cone ( figure 30 ) so that, under the screwing force, the washer closes instead of opening;
• a snail hunted in the platinum, even better than a simple eccentric, because allowing to keep two points of support without angular deformation;
• a protuberance 21A in male half-cone on the plate projecting towards the top, a protrusion 22A similar or identical to the middle part, in combination with a flange capping one and the other and having a bearing surface reduced to one edge circular, or in the form of a female cone ( Figures 27 and 28 ). The figure 26 illustrates an example of a combination of superabundant positioning and fixing mechanisms as described above, possibly in combination with flanges, an indexing rod cooperating with one or more angular indexing housings 41, split ring 24.

The difficulty in choosing between the many solutions that would be possible is to ensure, with the minimum number of components, a connection isostatic, easy assembly, and resistant to the forces and accelerations printed in served to a timepiece. Achievements according to Figures 1 to 5 are a preferred embodiment of the invention because they effectively fulfill these criteria, and are of a small footprint. Their implementation can be applied, at lower cost, to existing templates, and require only conical machining, or spherical, in the platinum and middle, which poses no problem of implementation.

In a preferred application, the plate 2 constitutes a support for at least one watch movement 3, and the caseband 4 is arranged to at least partially contain the movement 3.

The invention also relates to a timepiece 100 or jewelery including at least one such watch ensemble 1, or a watch unit 1 in which the plate 2 constitutes a support for at least one jewelery component and / or jewelery, and wherein the middle 4 is arranged to at least partially contain this component.

In a particular application, this timepiece 100 comprises a single pusher. In particular, this timepiece 100 is a single-pusher chronograph, for which the invention provides stability advantages during frequent axial maneuvers according to the direction of the pusher, while ensuring maximum safety against shocks and accelerations.

It is thus seen that the principle of the invention is applicable to very many geometries. Some are more interesting than others, and the invention provides the best advantages in its realization according to the Figures 1, 2 , 3 , 4, 5 , 12, 13, 14 , in particular with a flange 10 having a bearing surface 19 arranged to cooperate with a first bearing surface 8, conical or spherical or the like, of the plate 2, and with a second bearing 9 of the middle part 4, conical or spherical or the like , the bearing surface 19 being of revolution about a flange axis D10 perpendicular to the upper bearing surface 13 of the flange and arranged to coincide, in the assembled position and in the fully screwed position of the screw 6 in the housing 7, with the axis D0 of this housing 7. This arrangement makes it possible to avoid any disturbing torque due to oblique-component forces, contrary to conventional fastener types. Indeed, in the current fixings of movements to the boxes, one never has a flange thus strictly perpendicular, and any parasitic torque related to the tapping decreases the force of application, and the effect of repeated shocks and the application Accelerations inevitably result in games and movement of movement in its box.

The provision of the invention makes it possible to have a balance of the moments of the forces applied on the flange, by means of the screw, with very short lever arms (here corresponding to the distance between the axis D0 and the contact surfaces), which makes it possible, at equal torque, to apply a very high force at each point or contact surface, again in comparison with a usual fastening where the lever arm is constituted by the distance between the center of movement and the contact surface, and where, at the same torque moment of screwing, the force applied to each contact surface is much less.

The invention thus provides a fixing without play, very stable over time because it is not very sensitive to the effects of accelerations and in particular shocks.

In short, the invention provides a shape-free locking game to prevent any recoil of a movement of its box during shocks. The choice of a circular conical flange allows a precise angular centering of the movement and the middle part, and allows the respect of a defined interface of the box with the movement.

Claims (17)

1. Timepiece assembly (1) including at least one bottom plate (2), a middle part (4) arranged to cooperate in abutment with said plate (2), and a means (5) of securing said at least one bottom plate (2) to said middle part (4), said securing means (5) including at least one screw (6), arranged to cooperate in the screwed-in position with at least one axis (D0) housing (7) comprised in said bottom plate (2), to indirectly immobilise said middle part (4) relative to said bottom plate (2) via a flange (10), each said flange (10) being arranged to transmit the tightening force of one said screw (6) by abutting both, one a one hand on a first shoulder (8) comprised in said bottom plate (2) in proximity to each said housing (7), and on the other hand on a second shoulder (9) comprised in said middle part (4) in proximity to each said housing (7), said first shoulder (8) and/or said second shoulder (9) cooperating with said flange (10) on at most two surfaces or points, in an assembled position wherein said bottom plate (2) and said middle part (4) are assembled to each other and the position wherein said screw (6) is completely screwed into said housing (7), said assembly (1) being characterized in that said first shoulder (8) is conical or spherical and in that said second shoulder (9) is conical or spherical.
2. Timepiece assembly (1) according to the preceding claim, characterized in that said flange (10) is independent of said screw (6) and includes a top bearing surface (13) arranged to cooperate, in said assembled position and in the position wherein said screw (6) is completely screwed into said housing (7), with a bottom bearing surface (61) comprised in said screw (6), on a contact surface (16) of revolution relative to said axis (D0) of said housing (7).
3. Timepiece assembly (1) according to any of the preceding claims, characterized in that said middle part (4) includes stop means (42) arranged to cooperate with complementary stop means (22) comprised in said bottom plate (2) to limit the space between said middle part (4) and said plate (2), in said assembled position and the position wherein said screw (6) is completely screwed into said housing (7).
4. Timepiece assembly (1) according to claim 2, characterized in that any normal line, at a point on said first shoulder (8) of said bottom plate (2), to the tangent plane at this point to said shoulder, passes through an axis (D2) parallel to and at a distance from said axis (D0) of said housing (7), at a point which is located outside said housing (7) on the side of said housing (7) through which said screw (6) is inserted into said housing (7).
5. Timepiece assembly (1) according to the preceding claim, characterized in that said first shoulder (8) of said bottom plate (2) is a surface of revolution about said axis (D2).
6. Timepiece assembly (1) according to claim 2, characterized in that said second shoulder (9) of said middle part (4) is a surface of revolution about an axis (D4) which is parallel to said axis (D0) of said housing (7) in said assembled position, and in that any normal line, at one point on said second shoulder (9) of said middle part (4), to the tangent plane at that point to said shoulder passes through said axis (D4), at a point which is located, in said assembled position of said bottom plate (2) and said middle part (4), outside said housing (7) on the side of said housing (7) through which said screw (6) is inserted into said housing (7).
7. Timepiece assembly (1) according to claim 6, characterized in that, in said assembled position and in the position where said screw (6) is completely screwed into said housing (7), said axis (D4) of said second shoulder (9) of said middle part (4) is at a distance from said axis (D2) of said first shoulder (8) of said bottom plate (2), and said axis (D4) and said axis (D2) are parallel on either side of said axis (D0) of said housing (7).
8. Timepiece assembly (1) according to claim 2, characterized in that said flange (10) has a bearing surface (19) arranged to cooperate with said first shoulder (8) of said bottom plate (2), and with a second shoulder (9) of said middle part (4), said bearing surface (19) being a surface of revolution about a flange axis (D10) perpendicular to said top bearing surface (13) and arranged to coincide with said axis (D0) of said housing (7), in said assembled position and said position where said screw (6) is completely screwed into said housing (7).
9. Timepiece assembly (1) according to the preceding claim, characterized in that said bearing surface (19) is reduced to a circular edge of revolution about said flange axis (D10).
10. Timepiece assembly according to the preceding claim, characterized in that said flange (10) includes, connected to said bearing surface (19) and on the opposite side to said top bearing surface (13), a tapered surface (19B) arranged to allow said flange axis (D10) of said flange (10) limited angular mobility relative to said axis (D0) of said housing (7) for said screw (6), in the assembled position and while said screw (6) is being screwed into said housing (7).
11. Timepiece assembly (1) according to any of claims 5, 6 and 10, characterized in that said tapered surface (19B) is conical at an angle of taper (α10) of the flange relative to a plane perpendicular to said flange axis (D10), in that said first shoulder (8) of said bottom plate (2) is conical at a conical angle (α2) relative to a plane to said axis (D2), in that said second shoulder (9) of said middle part (4) is conical at a conical angle (α4) relative to a plane perpendicular to said axis (D4) and said flange taper angle (α10) is smaller, by a value of less than 2°, than said taper angle (α2) and said taper angle (α4).
12. Timepiece assembly (1) according to the preceding claim, characterized in that said flange taper angle (α10) has a value of 52°, and in that said conical angle (α2) and said conical angle (α4) each have a value of 53°.
13. Timepiece assembly (1) according to claim 7, characterized in that said first shoulder (8) of said bottom plate (2) is conical at a taper angle (α2) relative to a perpendicular plane to said axis (D2), in that said second shoulder (9) of said middle part (4) is conical at a taper angle (α4) relative to a perpendicular plane to said axis (D4) identical to said taper angle (α2), and in that, in a perpendicular plane to said axis (D0) of said housing for said screw (6) corresponding to the abutment of said flange (10) on said first shoulder (8) and said second shoulder (9), in the assembled position wherein said screw (6) is completely screwed into said housing (7), the radius (R2) of the section of said first shoulder (8) and the radius (R4) of the section of said second shoulder (9) have values comprised between 0.91 and 0.97 times the value of the radius (R0) of the shoulder of said flange (10), on the bearing surface (19) thereof, with said first shoulder (8) and said second shoulder (9), and in that the eccentricity between said axis (D2) and said axis (D0) on the one hand, and between said axis (D4) and said axis (D0) on the other hand, has values comprised between 0.03 and 0.05 times said value of the radius (R0) of the shoulder of said flange (10).
14. Timepiece assembly (1) according to claim 11, characterized in that the contact between said contact surface (19) of said flange (10) and said first shoulder (8), occurs at two points (P2A, P2B) separated by a central angle (θ2) relative to said axis (D0) of said housing (7), in that the contact between said bearing surface (19) of said flange (10) and said second shoulder (9) occurs at two points (P4A, P4B) separated by a central angle (θ4) relative to said axis (D0) of said housing (7), and in that the value of each of said central angles (θ2, θ4) is comprised between 53° and 118°.
15. Timepiece assembly (1) according to any of the preceding claims, characterized in that said bottom plate (2) forms a support for at least one timepiece movement (3) and in that said middle part (4) is arranged to at least partially contain said movement (3).
16. Timepiece (100) or piece of jewellery including at least one timepiece assembly (1) according to the preceding claim or one timepiece assembly (1) according to any of claim1 to 14, wherein said plate (2) forms a support for at least one jewellery component, and wherein said middle part (4) is arranged to at least partially contain said component.
17. Timepiece (100) according to the preceding claim, characterized in that includes a single push-button.

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