Clock Assembly

Abstract

The present invention relates to a watch assembly (1) of a stud (81), in particular a barrel stud, on a blank (91), in particular a bridge or plate (91), the stud (81) comprising a first axis (A80) and a shoulder (82) extending at least in a radial direction of the first axis (A80), the blank (91) comprising a groove (92) along a second axis (A90), the stud and the blank being constructed and / or arranged to prevent translation of the stud along the first axis relative to the blank and to allow, during assembly, sliding of the stud in translation in the groove along the second axis (A90), perpendicular to the first axis.

Description

[Technical field]

[0001] The present invention relates to a timepiece assembly. The present invention also relates to a timepiece movement comprising said timepiece assembly. The present invention finally relates to a timepiece comprising said timepiece assembly or said timepiece movement. [Background technology]

[0002] In a typical mechanical timepiece movement, the motor in the form of a barrel comprises, at both of its ends, a barrel stem mounted to pivot in bearings provided on the frame of the movement, the stem being mounted, for example, between a plate and a barrel bridge, a first guide bearing of the barrel stem being provided on the plate and a second guide bearing of the barrel stem being provided on the barrel bridge.

[0003] Such barrel mountings are bulky in the thickness of the watch movement or in the direction of the barrel true axis, which is particularly detrimental in the production of ultra-flat watch movements. Summary of the Invention [Problem to be solved by the invention]

[0004] The object of the present invention is to propose a timepiece assembly which remedies the above-mentioned drawbacks and improves the timepiece assemblies known from the prior art. In particular, the present invention proposes a timepiece assembly which is simple, removable and which allows the mounting of a barrel stem on a semi-finished movement by minimizing the bulk in the thickness direction of the timepiece movement. [Means for solving the problem]

[0005] The present invention relates to a watch assembly of a semi-finished movement (ébaucher), in particular a stem, in particular a barrel stem, on a bridge or plate. The stem comprises a first axis and a shoulder extending at least in the radial direction of the first axis. The semi-finished movement comprises a groove oriented along a second axis. The stem and the semi-finished movement are: Stopping the net translation along the first axis for the workpiece movement; and during mounting, allowing sliding in the true translation within the groove along the second axis, perpendicular to the first axis; The present invention is constructed and / or arranged so that

[0006] Various embodiments of the assembly are defined in claims 2 to 6.

[0007] According to the invention, the clock movement is defined in claim 7.

[0008] Various embodiments of the clock movement are defined in claims 8 to 11.

[0009] According to the invention, the watch is defined in claim 12.

[0010] According to the invention, the loading method is defined in claims 13 and 14.

[0011] An embodiment of the invention is defined in claim 15.

[0012] According to the invention, the timepiece is defined in claim 16.

[0013] The objects, features and advantages of the present invention will be explained in detail in the following description of specific embodiments, given by way of non-limiting example in connection with the accompanying drawings. [Brief description of the drawings]

[0014] [Figure 1] FIG. 1 is a diagram of an embodiment of a clock movement according to the invention, in which the embodiment of the clock movement according to the invention is illustrated in detail in a perspective cross section. [Diagram 2] FIG. 2 is a perspective view of an embodiment of a timepiece movement according to the present invention, with the barrel ratchet wheel, barrel arbour, and barrel spring removed. [Diagram 3] FIG. 3 is a partial cross-sectional view of an embodiment of a timepiece according to the invention, the cross-section being taken at the barrel stem. [Figure 4]FIG. 4 is a perspective view of the assembled ratchet wheel-barrel stem assembly. [Diagram 5] FIG. 5 is a perspective view of an embodiment of a clock movement according to the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0015] An embodiment of a watch 200 is described below with reference to figures 1 to 6. The watch 200 is for example a small watch, in particular a wristwatch. The watch 200 comprises a watch movement 100, which is intended to be mounted in a watch casing or case to protect it from the external environment. The watch movement 100 may be a mechanical movement, in particular an automatic movement.

[0016] The clock movement 100 - a frame 90, in particular a semi-finished movement or plate 91, and - 80 barrels mounted on 90 frame, Includes.

[0017] The timepiece movement 100 also comprises a timepiece assembly 1 of the barrel arbor 81 on a frame 90, in particular on a semi-finished movement 91, in particular on a plate 91. This assembly makes it possible to connect the barrel to the frame, in particular to mechanically connect the barrel arbor 81 and the gears 84, in particular the ratchet wheel, to the frame. The mechanical connection is preferably a pivot connection from the arbor 81 to the semi-finished movement 91, in particular a pivot connection around an axis A80 constituting the axis of the arbor 81.

[0018] In the embodiment described, the plate 91 is the back cover, or even the case-back cover. For this reason, the back cover and the plate may be manufactured as one and the same single part. The watch casing or case is advantageously closed by a crystal 10.

[0019] The 80-barrel is - With the box 81, - a toothed barrel ring 85 or a toothed crown wheel, which is pivoted on a frame or semi-finished movement 91; - a toothed gear 83 or a ratchet wheel 83 fixed to the arbour 81; a motor spring (not shown) mechanically connecting the toothed ring 85 to a core 812 formed on the outer surface of the axle 81; Includes.

[0020] Preferably, the toothed gear 83 is fixed to the arbor 81 by means of a screw 84. More specifically, the toothed gear 83 and the arbor 81 have complementary shapes that are nested within one another, preferably translationally along the axis A80, and held in the nested configuration by the screw 84.

[0021] In the illustrated embodiment, the motor spring recess is - Core 812, - Toothed ring 85; - Semi-finished movement 91 and - a toothed gear 83; It is separated by.

[0022] Advantageously, the diameter of the toothed gear 83 is greater than the diameter of the toothed ring 85 or the toothed crown wheel 85 .

[0023] Preferably, the toothed ring 85 is guided in rotation on the frame 90, in particular on the semi-finished movement 91 or on a bridge added to the semi-finished movement 91, by runners 70, in particular runners made of ruby. For this, preferably three runners 70 are used. In the figures, a single runner 70 is shown. The runners are arranged to roll on the cylindrical peripheral surface 851 of a toothed crown.

[0024] The runner may be pivoted about an axis 71 driven into the semi-finished movement. Preferably, the movement includes a pin 98 whose position parallel to the first axis A80 is adjustable. The pin 98 is preferentially arranged so as to define, by its contact with the toothed gear 83, the position of the toothed gear 83 on the first axis A80 and to keep the toothed gear 83 parallel to the semi-finished movement 91 and the glass 10 even in the presence of forces acting on the toothing of the toothed gear 83.

[0025] In order to be able to mechanically couple the main body 81 with the semi-finished movement 91, the arbour 81 includes a shoulder 82 extending at least radially of the first axis A80, - the semi-finished movement 91 includes a groove 92 directed towards the second axis A90, True and semi-finished movements - stop the true translation on the first axis A80 for the semi-finished movement, and - allowing the stem to slide in translation in the groove along a second axis A90, perpendicular to the first axis; The present invention is constructed and / or arranged so that

[0026] As can be seen in FIG. 3, in the illustrated embodiment, the barrel arbour has at one end 813 a groove 814, one of whose lateral faces 82 forms a shoulder 82. The groove may be constituted by an assembly of several parts. The groove 92 formed in the semi-finished movement 91 is itself a T-shaped cross-section groove, open only at one of its ends. Said groove is formed on the second axis A90. The lateral face 96 of the groove is arranged to cooperate with the shoulder 82. Note that by cooperating in contact with each other, the lateral face 96 and the shoulder 82 prevent any translational displacement of the arbour 81 along the first axis A80 when the arbour 81 is engaged in the groove 92. Preferably, the arbour has a shape of revolution at least at its end 813 and / or the groove has a shape of revolution at its non-open end, so that the arbour can rotate freely about the axis A80 in the groove.

[0027] The fact that the groove is open at one end allows the introduction of the tine 81 into the groove by displacing the tine in the direction of the second axis A 90. Of course, said displacement is only possible if the gear 83 is removed from the end 811 of the tine 81.

[0028] In the embodiment described and illustrated, the shoulder 82 and the side 96 each form a plane perpendicular to the first axis A80, and the two planes serve, together, to limit the translational movement of the stem 81 relative to the workpiece movement on the axis A80.

[0029] In alternative embodiments, surface 82 may be tapered and may cooperate with a tapered surface in the groove and / or with an inclined surface in the groove.

[0030] Advantageously, the semi-finished movement 91 may comprise a bush 93 which is driven into a hole 94, in particular a through hole 94, formed in a main part of the semi-finished movement 91 (i.e. the remainder of the semi-finished movement 91). Preferably, the bush 93 may be glued in the hole 94, in particular so as to form a sealed connection. For this reason, the semi-finished movement 91 preferably comprises a bush 93 which is driven into the main part 91. This makes it possible to manufacture the main part of the semi-finished movement 91 and the groove 92 from different materials, the groove 92 being manufactured in the bush 93.

[0031] In a variant not shown, the hole 94 may be bordered by an excess thickness made on the main parts of the semi-finished movement 91 (or on the remainder of the semi-finished movement 91), said excess thickness being advantageously local and / or provided locally around the hole 94. Whatever the variant, the hole and the bush may be generally cylindrical or polygonal in shape.

[0032] Due to the mounting of the barrel 80 on the frame 90 or on the semi-finished movement 91, the starting point is a configuration in which none of the barrel parts are located on the movement.

[0033] The ratchet wheel 85 is then positioned to arrive at the configuration of FIG.

[0034] Thereafter, the arbour 81 is presented and slid in translation within the groove 92 along the second axis A90.

[0035] The previous two steps may be performed in any order.

[0036] The motor spring is located within the recess by being coupled to the core 812 and the crown wheel 85 .

[0037] Finally, a toothed gear 83 is placed on the arbour 81 and the two parts are fixed together using screws 84.

[0038] Alternatively to what has been described above, the armature and the mainspring may first be attached to one another and then the properly formed assembly may be mounted on the semi-finished movement 91 or on a crowned wheel pre-mounted on the frame 90.

[0039] The invention also relates to said mounting method and to the assembly obtained by implementing said method.

[0040] The toothed gear 83 or ratchet wheel 83 is intended to mesh with an intermediate gear 89, such as an intermediate gear of the kinematic chain of an assembly of a watch. Preferably, said intermediate gear is arranged to mesh with the toothed gear 83 or ratchet wheel 83 at a place such that the action exerted by the intermediate gear 89 on the toothed gear 83 or ratchet wheel 83 prevents the arbor 81 from translating in the direction A90 of the groove 92. In particular, the action may tend to push the arbor 81 in translation towards the bottom of the groove 92.

[0041] Thanks to the above mentioned solution, the thickness of the watch is minimized. The thickness of the watch (not taking into account the functional play) is: - semi-finished movement 91, in particular the thickness of the semi-finished movement back, - thickness of the mainspring recess, - the thickness of the toothed gear 83 or ratchet wheel 83, - Glass 10 thickness, It can be decomposed into the sum of

[0042] In the above description, the assembly has been described for mounting a barrel stem to a semi-finished movement, in particular to a plate. However, the assembly may also be used for mounting any type of watch stem to a semi-finished movement, or more broadly to a watch component.

[0043] Whatever the embodiment and / or variant, the arbour 81, and in particular the barrel arbour, is preferably mounted with an overhang, i.e. mechanically connected at only one of its ends to the frame 90 or to the semi-finished movement 91, via a bearing or, more generally, a guide. This makes it possible, in particular, to obtain an assembly with a small bulk in the true longitudinal direction, or along the axis A80.

[0044] Whatever the embodiment and / or variant, the arbour 81, and in particular the barrel arbour, is preferably mounted to the semi-finished movement 91 or to the frame 90 longitudinally of the arbour or in the direction of the axis A80, without passing through the latter. This makes it possible, in particular, to guarantee tightness in the two spaces delimited by the faces of the semi-finished movement 91 or of the frame 90 which extend at least substantially perpendicularly to the arbour or to the axis A80.

[0045] Whatever the embodiment and / or variant, the toothed ring 85 is preferably not guided in rotation in the arbor 81. This makes it possible to dispense with mechanical elements connecting the toothed ring to the arbor and thus to obtain an assembly with a small bulk in the longitudinal direction of the arbor, or along the axis A80.

Claims

1. A true (81) clock assembly (1) on a semi-finished movement (91), The shaft (81) includes a first axis (A80) and a shoulder portion (82) that extends at least radially from the first axis (A80), The aforementioned semi-finished movement (91) includes a groove (92) directed along the second axis (A90), The aforementioned genuine and semi-finished movements are, To stop the true translation along the first axis of the semi-finished movement, During mounting, the true translational sliding motion is enabled within the groove along the second axis (A90), which is perpendicular to the first axis. Configured and / or arranged in such a manner Clock assembly (1).

2. The aforementioned shaft (81) is mounted with an overhang. The clock assembly (1) according to claim 1.

3. The aforementioned shaft (81) is mounted on the semi-finished movement (91) in the direction of the axis (A80) without passing through the semi-finished movement (91). The clock assembly (1) according to claim 1.

4. The semi-finished movement (91) includes a bush (93) which is driven into and / or bonded to a hole (94) formed in the remainder of the semi-finished movement. The clock assembly (1) according to claim 1.

5. The hole (94) is bordered by a locally formed excess thickness on the remainder of the semi-finished movement. The clock assembly (1) according to claim 4.

6. The aforementioned shaft (81) is mounted on the semi-finished movement so as to be rotatable around the first axis (A80), The clock assembly (1) according to claim 1.

7. A clock movement (100) comprising the clock assembly (1) described in claim 1.

8. The aforementioned truss (81) is a barrel truss (80), and a toothed gear (83) is fixed to its end (811). The clock movement (100) according to claim 7.

9. The watch movement includes a mainspring barrel (80), the toothed ring (85) of the mainspring barrel is swung on the semi-finished movement (91), and the toothed ring is mechanically connected by a motor spring to a core (812) provided on the mainspring (81). The clock movement (100) according to claim 7.

10. The toothed ring (85) is guided by rotation on the semi-finished movement (91) by the runner (70). The clock movement (100) according to claim 9.

11. The runner is pivoted around an axis (71) driven into a semi-finished movement (91), and / or the watch movement includes a pin (98) that is adjustable in position on the first axis (A80) to define the play of the toothed gear (83) by contact with the toothed gear (83). The watch movement (100) according to claim 10.

12. Including the watch movement (100) described in Claim 7, Clock (200).

13. A method for mounting the clock assembly (1) described in claim 1, - The steps of presenting or providing the shaft (81) and sliding the shaft (81) in translation along the second axis (A90) within the groove (92) of the semi-finished movement (91), and presenting or providing the toothed bore wheel (85) and mounting the toothed bore wheel (85) onto the semi-finished movement (91) or the frame (91), thereafter, - Steps of presenting and arranging the motor spring for mechanically connecting the shaft (81) to the toothed round-hole wheel (85), including, method.

14. The method according to claim 13, - The steps of presenting or providing the toothed ratchet wheel (85), and mounting the toothed ratchet wheel (85) onto the semi-finished movement (91) or frame (91), and presenting or providing the pivot (81) and motor mainspring, and assembling the motor mainspring onto the pivot (81) to obtain an assembly, thereafter, - A step of mounting the assembly by sliding the shaft (81) in translation along the second shaft (A90) within the groove (92) of the semi-finished movement (91), including, method.

15. After the method described above, - The steps of positioning the toothed gear (83) on the shaft (81), and fixing the toothed gear (83) and the shaft (81) to each other, including, The method according to claim 13.

16. An apparatus obtained by carrying out the method described in claim 13.

17. The truss (81) includes a barrel truss and / or The aforementioned semi-finished movement (91) is a bridge or plate (91), The clock assembly (1) according to claim 1.

18. The hole (94) is a through hole (94), The clock assembly (1) according to claim 4.

19. The toothed gear (83) is a square bore wheel (83), The clock movement (100) according to claim 8.

20. The runner (70) is made of ruby. The watch movement (100) according to claim 10.

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