CH706148B1 - Barrel clockwork. - Google Patents

Abstract

The invention relates to a watch cylinder (1) with a drum (2) coaxial with a shaft (3) in the pivoting direction (D), enclosing a spring (4) hooked to said drum (2) and a bung (5) coaxial with said shaft (3). Said bung (5), pivoting in a bore (21) of said drum (2), comprises a first stop surface (51) limiting its axial stroke, in said direction (D), with respect to an internal face (22) said drum (2), and a second stop surface (52) opposite to the previous one (51) and limiting its axial stroke with respect to an outer face (23) of said drum (2), which is mounted prisoner between said first (51) and second (52) stop surfaces, and freely pivotable about said bung (5). Said first (51) and / or said second (52) stop surface belongs either to a rivet (57) radially protruding from said bore (21), or to a coaxially fixed component on said bung (5) protruding radially and stopping.

Description

Field of the invention

The invention relates to a watch cylinder having a drum coaxial with a barrel shaft in the direction of the pivot axis, said drum enclosing at least one barrel spring whose one end is fixed or attached to said drum , and a second end of which is fixed or hooked to a plug coaxial with said barrel shaft and guided on said barrel shaft.

The invention relates to a watch movement incorporating at least one such barrel.

The invention relates to a timepiece incorporating such a watch movement and / or at least one such barrel.

The invention also relates to a method for producing and mounting a movement comprising a structure for receiving such a barrel.

The invention relates to the field of watchmaking, and more particularly the field of energy storage by barrel with mainspring for a motor movement or a ringing movement.

Background of the invention

Traditionally, a motor cylinder for a watch movement comprises a drum, in which is mounted a barrel spring, wrapped around a barrel shaft. This barrel spring, generally spiral, is hooked or attached to a first peripheral end within this drum. It is hooked or attached to a second central end, either to the barrel shaft, or to a plug which is coaxial with the barrel shaft, and at least partially guided thereon.

The barrel rotates relative to a plate or a barrel bridge, at the barrel shaft, or the bung, in stones or guides of this plate or this bridge.

The barrel is closed, to enclose the spring, either by a lid attached to the drum by clipping or other, or by a ratchet integral with rotation of the barrel shaft, or the bung as appropriate, and also forming a lid.

[0009] Few configurations allow both an automated assembly and an easy extraction of the barrel relative to the movement, as part of a maintenance operation.

In the first case with a lid attached to the drum and independent of the ratchet, fixing the ratchet, generally by screwing, is awkward to automate. If it is necessary to extract the barrel, for example in case of breakage of the spring, it is necessary to largely disassemble the watch movement in which is incorporated the barrel.

In the second case, where the closure is achieved by the single ratchet, the integral holding of the barrel is performed only by the barrel spring itself, which is insufficient to allow automated assembly of all . When, in this configuration, the second central end of the spring is hooked or attached to a bung which pivots about a fixed axis integral with the plate and / or the barrel bridge, the extraction of the barrel is possible with less disassembly of movement components than in the previous case of the lid attached to the drum and independent of the ratchet.

In the first as the second case, the barrel may, under the effect of accelerations and especially during a shock, out of its pivot points, and can no longer perform its function of driving the movement to which he and dedicated.

Summary of the invention

The invention proposes to design a barrel whose assembly is easily automated, in particular with a simplification of the fastening of the ratchet, and whose components are integral so as to make this barrel an autonomous sub-assembly ready to be mounted in a higher order mechanism, including a movement. The invention also aims to allow easy extraction of the barrel relative to the movement or the mechanism in which it is mounted.

For this purpose, the invention relates to a watch cylinder having a pivoting drum, coaxial with a barrel shaft in the direction of the pivot axis, said drum enclosing at least one barrel spring including a first end is fixed or hooked to said drum, and a second end of which is fixed or attached to a plug coaxial with said barrel shaft and guided on said barrel shaft, characterized in that said plug is pivotally guided in a bore of said drum, and has a first bead-limiting surface arranged to limit the axial stroke, in said direction of the pivot axis, of said bung with respect to an inner face of said drum, and a second bung-stop surface opposed to said first bung limiting surface and arranged to limit the axial stroke, in said direction of the pivot axis, of said bung with respect to a an outer face of said drum, which drum is mounted on the one hand prisoner between said first bung limiting surface and said second bead stop surface which are in opposition to each other, and of on the other hand freely pivoting about said bung, characterized in that said first bung-limiting surface and / or said second bead-stop surface belongs either to a rivet radially projecting from said bore of said drum, or a component coaxial with said drain bored or fixed on said bung, projecting radially and stopping.

According to a feature of the invention, said first bung-limiting surface and / or said second bung-stop surface is a surface of a component coaxial with said drain bored or fixed on said bung, and radially overflowing relative to said bore of said drum.

According to a feature of the invention, said barrel shaft is removable, and comprises a bearing arranged to cooperate in guiding, in a bore of said bung, and comprises, either directly or on a removable component that carries said shaft the first shaft stop surface and a second shaft stop surface opposed to each other and arranged to limit, together, the axial stroke, in said direction of the axis of pivoting, said barrel shaft relative to a receiving structure of said barrel.

According to a feature of the invention, at least said first shaft stop surface or said second shaft stop surface is made integrally with said shaft on a flange projecting radially from said span. .

According to a feature of the invention, at least said first shaft stop surface or said second shaft stop surface is a surface of a removable component relative to said shaft.

According to a feature of the invention, at least said first shaft stop surface or said second shaft stop surface is a surface of a circlip or a key cooperating with a groove or a housing that includes said tree.

According to a feature of the invention, said barrel comprises a ratchet, and said bung comprises means for axial support and centering of the ratchet, and means for driving pivoting said ratchet.

According to a feature of the invention, said means for pivoting said ratchet comprise at least one drive plate.

According to a feature of the invention, said ratchet is driven or fixed on said bung.

According to a feature of the invention, said barrel is a motor barrel or a barrel of ringing.

The invention relates to a watch movement incorporating at least one such barrel, characterized in that said movement comprises a structure with at least a first partition and a second partition defining together a chamber for receiving said barrel, and comprising each a bore coaxial with each other for the reception and pivotal guidance of the barrel shaft, said first partition having a first complementary shaft stop surface arranged to constitute an axial stroke limitation of a first shaft stopping surface of said cylinder, and said second partition having a second complementary shaft stop surface to constitute an axial stroke limitation of a second shaft stopping surface of said cylinder, to limit together, the axial stroke, in said direction of the pivot axis, of the barrel shaft relative to said structure.

According to a feature of the invention, said first partition comprises, opposite to said first complementary shaft stop surface, a first axial stroke limiting inner surface to limit the axial stroke, in said direction of the pivot axis, said bung and / or said drum relative to said structure.

According to a characteristic of the invention, said movement comprises such a barrel provided with a ratchet, and said second partition comprises, opposite to said second complementary stop shaft surface, a second inner race limiting surface. axial to limit the axial stroke in said direction of the pivot axis of said bung or / and said ratchet relative to said structure.

According to a feature of the invention, said second axial race limiting inner surface comprises spacing means with said ratchet.

The invention relates to a timepiece incorporating such a watch movement and / or at least one such barrel.

The invention also relates to a method for producing and mounting a movement comprising a structure for receiving such a cylinder, characterized in that: said bung is made with a bore, means for axially supporting and centering a ratchet, and means for pivoting said ratchet, said removable barrel shaft is made and has a bearing arranged to cooperate in guiding in said bore of said bung, and further comprising a first shaft stop surface and a second shaft stop surface opposite one to the other and arranged to limit, together, the axial stroke, in said direction of the pivot axis, said barrel shaft relative to said receiving structure of the barrel, said receiving structure comprising at least a first partition and a second partition defining together a chamber for receiving said barrel, and said first partition and said second partition each having a bore coaxial with each other for receiving and pivotally guiding said barrel shaft, said first partition having a first complementary shaft arresting surface arranged to provide an axial stroke limitation of said first shaft stopping surface, and said second partition having a second surface; shaft stop complementary to provide an axial stroke limitation of said second shaft stop surface, for limiting, together, the axial stroke, in said direction of the pivot axis, of said barrel shaft relative to to said structure, and further characterized in that the following steps are successively carried out: said bung is inserted into said drum so as to mount it, on the one hand prisoner between said first bung restriction surface and said second bung stop surface, and on the other hand free to pivot about said bung and, for this purpose, or deformed in the form of a radially projecting rivet one end of the bung, or is reported to said end a radially protruding component and stopping; said at least one barrel spring is inserted into said drum, and said first end is fixed or hooked to said drum, and said second end is fixed or hooked to said bung; a ratchet is immobilized on said axial bearing and centering means and said means for pivoting said ratchet that comprises said bung; between said first partition and said second partition of said structure is inserted a subassembly thus constituted by said drum, said mainspring, said plug and said ratchet, and said bore of said plug is positioned in alignment with said coaxial bores of said structure ; one threads, from one of the sides of said structure, said barrel shaft through one of said partitions of said structure, through said bung, then through the other of said partitions of said structure, and then immobilizes said barrel shaft by attachment thereto of said first shaft stop surface and / or said second shaft stop surface.

The invention allows a significant reduction in production and assembly costs, a simplification of the barrel assembly, and also a simplification of its components. It allows the fastening of the components at subassembly stages, which simplifies the assembly which can be easily automated, with a paraxial manipulator according to the direction of the pivot axis, which further lowers the already improved costs by simplifying the components and thus the lowering of their unit cost. The barrel remains extractable after complete assembly of the movement. Finally, the impact resistance is improved by locking the barrel shaft which passes through the partitions of the structure, and which is rigidly stopped by the first and second shaft stop surfaces.

Brief description of the drawings

Other features and advantages of the invention will appear on reading the detailed description which follows, with reference to the accompanying drawings, in which: <tb> fig. 1 <SEP> shows, schematically and in section along a plane passing through its pivot axis, a cylinder according to the invention; <tb> fig. 2 <SEP> represents a detail of this fig. 1, at a bung of this barrel in a particular embodiment; <tb> fig. 3 <SEP> represents, in end view, an end of such a plug for receiving and driving a ratchet; <tb> fig. 4 <SEP> represents, in the form of a block diagram, a timepiece incorporating a clockwork movement incorporating such a barrel; <tb> figs. 5 and 6 <SEP> show, schematically and in elevation, variants of particular bungs.

Detailed Description of the Preferred Embodiments

The invention relates to the field of watchmaking, and more particularly the field of energy storage by barrel with mainspring for a motor movement or a ringing movement.

The invention relates to a watch cylinder 1 comprising a drum 2 coaxial with a barrel shaft 3 in a direction of the pivot axis D.

This drum 2 is arranged to enclose at least one barrel spring 4, a first end 41 is fixed or attached to the drum 2, or cooperates with the drum 2 in case of mounting the spring 4 by adhesion with sliding flange, and whose second end 42 is fixed or hooked to a plug 5 coaxial with the barrel shaft 3 and guided on the barrel shaft 3, at a hook 43 or the like.

The bung 5 is pivotally guided in a bore 21 that includes the drum 2, and comprises a first bead limiting surface 51 arranged to limit the axial stroke, in the direction of the pivot axis D, of the bung 5 with respect to an inner face 22 of the drum 2, and a second bung stop surface 52 opposite to the first bead restricting surface 51 and arranged to limit the axial stroke, in the direction of the pivot axis D, of the plug 5 with respect to an external face 23 of the drum 2.

Preferably, there is a space between the first limiting surface 51 and the inner face 22, so as to avoid friction decreasing the yield.

The drum 2 is mounted on the one hand prisoner between the first bung restriction surface 51 and the second bung stop surface 52, and on the other hand free to pivot around the bung 5.

In an advantageous embodiment visible in FIGS. 1, 2, and 5, the first bung-limiting surface 51 and / or the second bead-stop surface 52 is constituted by a rivet 57 radially projecting from this bore 21 of the drum 2. In the variant of FIG. fig. 6, the second bung stop surface 52 is constituted by a flange 58.

In another variant, the first bung limitation surface 51 and / or the second bung stop surface 52 is constituted by a coaxial component 5 to the bung removed or fixed on the bung 5, and radially overflowing by relative to this bore 21 of the drum 2, such as a ring or the like. Figs. 5 and 6 illustrate bungs 5 having an outer guide surface 50, only the second bead stop surface 52 is radially projecting from said outer guide surface 50, on which a ring or the like constituting the first limiting surface 51. The bung 5 then comprises, recessed from the surface 50, the catch hook 43 of the mainspring spring 4, and a clearance 44 around this hook 43.

Preferably and advantageously, the barrel shaft 3 is removable, and has a bearing 31 arranged to cooperate in guiding in a bore 53 of the bung 5. This shaft 3 further comprises a first stop surface of shaft 32 and a second shaft stopping surface 33 opposed to each other and arranged to limit, together, the axial stroke, in the direction of the pivot axis D, of the barrel shaft 3 relative to a structure 6 for receiving the barrel.

In a first embodiment, as shown in FIGS. 1 and 2, at least the first shaft stopping surface 32 or the second shaft stopping surface 33 is integrally formed with the barrel shaft 3 in the form of a flange 34 protruding radially from in reach 31. In fig. 1, this flange 34 forming a head is located on a dial side of a plate 7. A bridge 8 guides the other end of this barrel shaft 3, and covers the cylinder 1.

In a particular embodiment, at least the first shaft stop surface 32 or the second shaft stop surface 33 is made at a removable component relative to the barrel shaft 3. From economically, at least the first shaft stop surface 32 or the second shaft stop surface 33 is constituted by a circlip 35 or a key, or a driven or bonded washer or the like, cooperating with a throat 36 or a housing that comprises the barrel shaft 3, as in the variant illustrated in FIG. 1. This key or circlip guarantees the resistance of the assembly during shocks, and in particular cash the inertia of the barrel assembly, thus avoiding any deterioration of the movement 100 in which the barrel 1 is mounted.

To make it easy to automate the mounting of a ratchet, the bung 5 advantageously comprises axial bearing and centering means 54 of a ratchet 9, and pivoting drive means 55 of the ratchet 9.

Preferably, the ratchet 9 is driven or fixed on the bung 5.

In a particular and economical variant, as shown in FIG. 3, the pivoting drive means 55 of the ratchet 9 comprise at least one drive plate 56. They may also be constituted by two plates, a square or any other polygon, or simply result from a laser welding, bonding , or similar. Preferably, when the ratchet 9 is mounted removably, the clearance between the pivoting drive means 55 of the ratchet 9 and the latter is minimal, preferably an assembly is chosen with a slight tightening, so as to guarantee good concentricity at the ratchet, to avoid any disturbance of the gear.

In the same way, it is preferable to limit to a minimum the clearance between the bearing 31 of the barrel shaft 3 and the boring bore 53, and between the bearing 31 of the barrel shaft 3 and the bore 82 of the bridge 8.

In a variant as visible in FIG. 1, the ratchet 9 comprises spacing means 91 with an inner surface 81 of an element 8, such as a bridge, of a structure 6 for receiving the barrel 1. In a variant also visible in FIG. 1, this bridge 8 carries spacing means 85.

In a variant not illustrated in the figures, the barrel shaft 3 is fixed permanently on the bridge, by welding or the like.

Another variant is to bouteroller, or rivet, or the like, the end of the barrel shaft 3 protruding from the side of the bridge 8, so as to avoid the use of an additional component.

Preferably, the invention applies to a barrel 1 which is a motor cylinder or a barrel of a bell, for a timepiece such as a watch.

The invention also relates to a watch movement 100 incorporating at least one such barrel 1.

This movement 100 comprises a structure 6 with at least a first partition 7, such as a plate, and a second partition 8, such as a bridge, defining together a chamber for receiving the cylinder 1, and each having a bore 72, 82, coaxial with each other for the reception and the pivotal guidance of the barrel shaft 3. The first partition 7 comprises a first complementary shaft stop surface 73 arranged to constitute an axial stroke limitation. , in particular in case of shock, of the first shaft stop surface 32, and the second partition 8 comprises a second complementary shaft stop surface 83 to constitute an axial stroke limitation of the second stop surface shaft 33, to limit, together, the axial stroke, in the direction of the pivot axis D, of the shaft 3 relative to the structure 6.

In a particular embodiment, visible in FIG. 1, the first partition 7 has, opposite to the first complementary shaft stop surface 73, a first inner axial displacement limiting surface 74 for limiting the axial stroke, in the direction of the pivot axis D, of the bung 5 and / or drum 2 relative to the structure 6. But, preferably, this surface 74 is dimensioned so that there remains a functional game. Preferably, the limitation to contact is rather by the cooperation of a thread 24 that includes the drum 2, with an opposing surface 75 of the plate 7: due to the small surface of the thread 24, the friction is reduced. The same arrangement is visible on the opposite side between a thread 91 of the ratchet 9 and an opposing inner surface 81 of the bridge 8.

In a particular embodiment, visible in FIG. 1, the second partition 8 has, opposite to the second complementary shaft stop surface 83, a second inner axial displacement limiting surface 84 for limiting the axial stroke, in the direction of the pivot axis D, of the bung 5 and / or ratchet 9 with respect to the structure 6. In a particular embodiment, visible in FIG. 1, the second axial running limiting inner surface 84 comprises spacing means 85 with the ratchet 9, so as to prevent a large surface of the ratchet 9 forming a cover from rubbing over a large surface of the bridge 8.

The invention also relates to a timepiece 1000 incorporating at least one such movement 100, and / or at least one such barrel 1.

The invention also relates to a method of mounting a watch cylinder 1, in a receiving structure 6 that includes a movement 100. According to this method, we use: this barrel 1 comprising: a drum 2 coaxial with a barrel shaft 3 in a direction of the pivot axis D, the drum 2 being arranged to enclose at least one barrel spring 4, a first end 41 of which is fixed or attached to this drum 2, and a second end 42 of which is fixed or hooked to a plug 5 coaxial with this barrel shaft 3 and guided on the barrel shaft 3, the barrel shaft 3 being removable and having a bearing 31 arranged to cooperate in guiding in a bore 53 of the plug 5 and further comprising a first shaft stop surface 32 and a second shaft stop surface 33 opposed to each other and arranged to limit, together, the axial stroke, in the direction of the pivot axis D, of the barrel shaft 3 relative to the receiving structure 6 of the barrel, the bung 5 being pivotally guided in a bore 21 which comprises the drum 2, and having a first bung limiting surface 51 arranged to limit the axial stroke, in the direction of the pivot axis D, of the bung 5 by relative to an inner face 22 of the drum 2, and a second bung stop surface 52 opposite to the first bung restriction surface 51 and arranged to limit the axial stroke, in the direction of the pivot axis D, of the bung 5 with respect to an outer face 23 of the drum 2, and the bung 5 comprising axial support and centering means 54 of a ratchet 9, and pivoting drive means 55 of the ratchet 9, and this receiving structure 6 comprising at least a first partition 7 and a second partition 8 defining together a chamber for receiving the cylinder 1, and the first partition 7 and the second partition 8 each having a bore 72, 82, coaxial to one another for the reception and the pivotal guidance of the barrel shaft 3, the first partition 7 having a first complementary shaft stop surface 73 arranged to constitute an axial stroke limitation of the first surface of the barrel shaft; shaft stop 32, and the second partition 8 having a second shaft stop complementary surface 83 to constitute an axial stroke limitation of the second shaft stop surface 33, to limit, together, the stroke axial, in the direction of the pivot axis D, of the barrel shaft 3 with respect to the structure 6.

According to the mounting method, the following steps are successively carried out: the bung 5 is inserted into the drum 2 so as to mount it, on the one hand prisoner between the first bung restriction surface 51 and the second bung stop surface 52, and on the other hand free to pivot around the bung 5, and, to do this, or is deformed in the form of a rivet 57 radially projecting one end of the bung 5, or is reported to said end a radially protruding component and stopping. In the advantageous embodiment where at least the first bung restriction surface 51 or the second bung stop surface 52 is constituted by a rivet 57, it is thus made after having threaded the drum 2 on the bung 5 ; the at least one barrel spring 4 is inserted into the drum 2, and the first end 41 is fixed or hooked to this drum 2, and the second end 42 is fixed or hooked to the bung 5; a ratchet 9 is immobilized on the axial bearing and centering means 54 and the pivoting drive means 55 of the ratchet 9 which comprises the bung 5; between the first partition 7 and the second partition 8 of the structure 6 is inserted a subassembly 10 thus constituted by the barrel drum 2, the barrel spring 4, the plug 5 and the ratchet 9, and the bore 53 of the bung 5 in alignment with the coaxial bores 72 and 82 of the structure 6; one threads, from one of the sides of the structure 6, the barrel shaft 3 through one of the partitions 7, 8, of the structure 6, through the bung 5, then through the other of the partitions 8, 7, of the structure 6, then the barrel shaft 3 is immobilized by fixing the first shaft stop surface 32 and the second shaft stop surface 33 thereto.

Preferably, this method is implemented by a robotic manipulator. Thanks to the very simple design of the invention, only mounting movements parallel to the direction of the pivot axis D are necessary to perform the assembly.

This design, with pre-assembly of the drum and the bung, then mounting the mainspring, and then the ratchet on the bung, allows easier assembly compared to a conventional assembly where the ratchet is often preassembled on the crowded.

The subassembly 10 can be stored preassembled and functionally controlled. It is enough to put it in position in its movement, to immobilize it by the barrel shaft, and to stop the latter longitudinally by a simple circlip or a simple key, to ensure a precise assembly, inexpensive, and very shock resistant.

The barrel remains extractable after complete assembly of the movement.

Claims (17)

1. A watch cylinder (1) comprising a pivoting drum (2), coaxial with a barrel shaft (3) in the direction of the pivot axis (D), said drum (2) enclosing at least one spring of barrel (4) of which a first end (41) is fixed or hooked to said drum (2) or cooperates with said drum (2), and a second end (42) of which is fixed or attached to a plug (5) coaxial with said shaft barrel (3) and guided on said barrel shaft (3), characterized in that said bung (5) is pivotally guided in a bore (21) that comprises said drum (2), and has a first limiting surface bung arrangement (51) arranged to limit the axial stroke, in said direction of the pivot axis (D), of said bung (5) with respect to an inner face (22) of said drum (2), and a second surface stopper (52) opposite to said first bung restrictor surface (51) and arranged to limit the axial stroke e, in said direction of the pivot axis (D), said bung (5) with respect to an outer face (23) of said drum (2), which drum (2) is mounted, on the one hand prisoner between said first bung restriction surface (51) and said second bung stop surface (52) which are in opposition to each other, and on the other hand free to pivot about said bung (5). ), characterized in that said first bung restrictor surface (51) or / and said second bead stop surface (52) belongs, or to a rivet (57) radially protruding from said bore (21) of said drum (2), or a component coaxial with said bung (5) driven or fixed on said bung (5) projecting radially and stopping. 2. Barrel (1) according to claim 1, characterized in that said first bung limiting surface (51) and / or said second bung stop surface (52) is a surface of a component coaxial with said bung (5) driven or fixed on said bung (5), and radially overflowing with respect to said bore (21) of said drum (2). 3. Barrel (1) according to one of the preceding claims, characterized in that said barrel shaft (3) is removable, and comprises a bearing (31) arranged to cooperate in guiding in a bore (53) of said bung ( 5), and comprises, either directly or on a removable component carried by said barrel shaft (3), a first shaft stop surface (32) and a second shaft stop surface (33). opposed to each other and arranged to limit, together, the axial stroke in said direction of the pivot axis (D) of said barrel shaft (3) relative to a receiving structure of said barrel. 4. Barrel (1) according to claim 3, characterized in that at least said first shaft stop surface (32) or said second shaft stop surface (33) is made integrally with said shaft barrel (3) in the form of a flange (34) projecting radially from said span (31). 5. Barrel (1) according to claim 3, characterized in that at least said first shaft stop surface (32) or said second shaft stop surface (33) is made on a removable component relative to barrel shaft (3). Barrel (1) according to claim 4, characterized in that at least said first shaft stop surface (32) or said second shaft stop surface (33) is a surface of a circlip ( 35) or a key cooperating with a groove (36) or a housing that comprises said barrel shaft (3). 7. Barrel (1) according to one of the preceding claims, characterized in that it comprises a ratchet (9), and in that said bung (5) comprises axial bearing means and centering (54) of said ratchet (9), and pivoting drive means (55) of said ratchet (9). 8. Barrel (1) according to claim 7, characterized in that said pivoting drive means (55) of said ratchet (9) comprise at least one drive plate (56). 9. Barrel (1) according to claim 7 or 8, characterized in that said ratchet (9) is driven or fixed on said bung (5). 10. Barrel (1) according to one of the preceding claims, characterized in that said barrel (1) is a motor cylinder or a barrel of ringing. 11. Watch movement (100) incorporating at least one barrel (1) according to one of claims 1 to 10, characterized in that said movement (100) comprises a structure (6) with at least a first partition (7). ) and a second partition (8) defining together a chamber for receiving said barrel (1), and each having a bore (72; 82) coaxial with each other for the reception and pivotal guidance of the barrel (8). barrel shaft (3), said first partition (7) having a first complementary shaft stop surface (73) arranged to constitute an axial stroke limitation of a first shaft stop surface (32) of said barrel, and said second partition (8) having a second complementary shaft stop surface (83) for providing an axial stroke limitation of a second shaft stopping surface (33) of said barrel, for limiting, together, the axial stroke, according to the direction of the axis pivoting (D), the barrel shaft (3) with respect to said structure (6). 12. Movement (100) according to claim 11, characterized in that said drum (2) comprises a thread (24) arranged to limit the axial stroke in relation to an opposing surface (75) that comprises said first partition (7), to limit the axial stroke in said direction of the pivot axis (D) of said bung (5) and / or said drum (2) relative to said structure (6). 13. Movement (100) according to claim 11 or 12, comprising a said barrel (1) provided with a said ratchet (9) according to one of claims 7 to 9, characterized in that said second partition (8) comprises opposed to said second shaft stop complementary surface (83), a second axial stroke limiting inner surface (84) for limiting the axial stroke, in said direction of the pivot axis (D), of said bung (5) or / and said ratchet (9) relative to said structure (6). 14. Movement (100) according to claim 13, characterized in that said second axial stroke limiting inner surface (84) comprises spacing means (85) with said ratchet (9). 15. Movement (100) according to one of claims 11 to 14, comprising a said barrel (1) provided with a said ratchet (9) according to one of claims 7 to 9, characterized in that said ratchet (9 ) comprises spacing means (91) for maintaining at a distance an inner surface (81) of said second partition (8) of said structure (6). 16. Timepiece (1000) incorporating at least one movement (100) according to one of claims 11 to 15, or at least one barrel (1) according to one of claims 1 to 10. 17. A method for producing and mounting a movement (100) comprising a structure (6) for receiving a said barrel (1) according to claim 1, characterized in that: <tb> - <SEP> said bung (5) is made with a bore (53), axial support and centering means (54) for a ratchet (9), and pivoting drive means ( 55) of said ratchet (9), <tb> - <SEP> is carried out said removable barrel shaft (3) and having a bearing (31) arranged to cooperate in guiding in said bore (53) of said bung (5), and further comprising a first surface of a shaft stop (32) and a second shaft stop surface (33) opposite to each other and arranged to limit together the axial stroke in said direction of the pivot axis (D ), said barrel shaft (3) with respect to said barrel receiving structure (6), <tb> - <SEP> is carried out said receiving structure (6) comprising at least a first partition (7) and a second partition (8) defining together a chamber for receiving said barrel (1), and said first partition ( 7) and said second partition (8) each having a bore (72; 82) coaxial with each other for pivotally receiving and guiding said barrel shaft (3), said first partition (7) having a first shaft stop complementary surface (73) arranged to constitute an axial stroke limitation of said first shaft stop surface (32), and said second wall (8) having a second complementary stop surface; shaft (83) to constitute an axial stroke limitation of said second shaft stop surface (33), to limit together the axial stroke in said direction of the pivot axis (D) of said shaft barrel (3) with respect to said structure (6), <tb> <SEP> and further characterized in that the following steps are successively carried out: <tb> - <SEP> inserting said bung (5) in said drum (2) so as to mount it, on the one hand prisoner between said first bung restriction surface (51) and said second surface of bung stop (52), and secondly freely pivotable about said bung (5), and, to do this, or is deformed in the form of a rivet (57) radially overflowing one end of the bung ( 5), or there is reported to said end a radially protruding component and stopping; <tb> - <SEP> said at least one barrel spring (4) is inserted into said drum (2), and said first end (41) is fixed or hooked to said drum (2), and said second one is fixed or hooked end (42) to said bung (5); <tb> - <SEP> a ratchet (9) is immobilized on said axial and centering support means (54) and said pivoting drive means (55) of said ratchet (9) which comprises said bung (5) ; <tb> - <SEP> is inserted between said first partition (7) and said second partition (8) of said structure (6) a subassembly (10) thus constituted by said drum (2), said mainspring ( 4), said bung (5) and said ratchet (9), and positioning said bore (53) of said bung (5) in alignment with said coaxial bores (72; 82) of said structure (6); <tb> - <SEP> is threaded from one side of said structure (6), said barrel shaft (3) through one of said partitions (7; 8) of said structure (6), through of said bung (5), then through the other of said partitions (8; 7) of said structure (6), then said barrel shaft (3) is immobilized by fixing to said latter of said first stop surface shaft (32) and / or said second shaft stop surface (33).