JP3686123B2 - Automatic watch mainspring winding device - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to an automatic mainspring winding device for a timepiece, having an actuating member formed by an eccentric system that can be at least partially seen.
[0002]
Timepieces with a dial with a transparent or ornamental hole in which the visible part of the eccentric mechanism vibration mass appears partially incomplete through the dial or from the back is well known and this mass is Usually, it is formed forcibly on the bottom side of the case, i.e. the movement receiver side, for technical reasons. Some watches of this type also have a cover that is at least partially transparent (“skeleton” watch). In this case as well, the underside of the vibrating mass, at least part of it, can be seen through the cover, but this requires turning the watch upside down.
[0003]
In any case, such an exhibition is not practically satisfactory. The reason for this is that the aesthetic interest is diminished because the part of the field of view is cut off and incomplete when the oscillating mass located on the “other side” crosses the dial. In order to evaluate the aesthetic effect obtained by the vibrating mass, it is necessary to provide an at least partially transparent cover so that the watch can be turned over, which creates another inconvenience.
[0004]
Of course, a rotating member (actually a “sham vibration mass”) can be placed just below the dial, which is wholly or partially transparent for decoration purposes only, or has a decorative hole. However, this is a method aimed at avoiding this without solving the technical problems that inevitably arise in relation to the location of the vibrating mass.
[0005]
[Prior art]
The problem imposed on the present invention is an automatic mainspring winding watch, in which the vibrating mass has a decorative function as shown in the embodiment, and in actual use, it acts as the active mass of the eccentric system. Is to provide an automatic mainspring winding clock. This results in the question of how to balance technical and aesthetic purposes, in other words, the problem of “compromising” with the aforementioned technical constraints.
[0006]
Such problems are not raised in the prior art, and there is no description on how to solve them. CH-666, 380 describes a watch having circular members arranged on both sides of the movement, but these members are not connected and are separate from the movement (no intervention in the mainspring winding). It does not have a decorative function.
[0007]
The eccentric system described in CH-362, 366 includes a single mass and has a special form and arrangement to minimize complications.
[0008]
The timepiece described in EP-0,334,088 contains a single vibrating mass, and the connecting portion between the mass and its center of rotation passes over the dial.
[0009]
The automatic spring winding device described in GB-776, 187 includes a single oscillating mass, the gear unit and the oscillating mass are connected and assembled via an arm, not only the thickness but also the frictional force. Try to keep it to a minimum.
[0010]
[Means for solving problems]
The object of the present invention is to provide a solution to the above-mentioned problems and questions, this object being achieved by the means described in claim 1 of the claims. Due to the dependent claims defining this means, the invention can be implemented inexpensively.
[0011]
Any of the foregoing documents can be used alone or in combination, but do not suggest the present invention.
[0012]
In fact, even though CH-666 and 380 are considered to be technically close to the present invention, the above-mentioned CH-362 and 366 have neither a description nor a suggestion of this, and in this case First of all, the watch is provided with two active oscillating masses (simply a decorative plate) and then these two masses are connected. This primitive connection, which is briefly mentioned, has two functions at the same time, namely an operational function and a decorative function, as claimed in the case of the present invention. .
[0013]
Similarly, the specialities described in EP-0, 344, 088 regarding the connection of the peripheral part of the mass and the center of rotation clearly do not contain information reaching the claimed combination (at the same time CH-666). 380 and CH-362, 366).
[0014]
The purpose pursued by GB-776, 187 is completely different from the object of the present invention. This document is also specifically combined with CH-666, 380, but does not include teachings to reach the claimed properties.
[0015]
With regard to the operating function, according to the mainspring winding device of the present invention, the energy of the two active masses that operate the assembly is merged. The mainspring winding is thus performed quickly and regularly, which significantly improves the stability of the movement of the watch.
[0016]
Next, two embodiments of the present invention will be described with reference to the accompanying drawings.
[0017]
【Example】
1 has a movement 1 having an axis 2, a display mechanism 3, 4 and in this embodiment two vibrating masses 5, 6 having the same axis as the axis 2 of the watch. The dial plate 16 and the surrounding modules 11 and 14 are included. The two oscillating masses 5 and 6 are both combined with the movement 1 and the modules 11 and 14. The downward vibration mass 5 arranged on the receiving side of the movement 1 corresponds to the vibration mass used in a normal automatic mainspring winding timepiece. This oscillating mass can be pivoted by means of a ball bearing 7 joined by an outer bush (not shown), which is fixed on the movement on the one hand by means of screws 9 (shown diagrammatically). On the other hand, it is integrated with the toothed ring 12. Similarly, the upper vibrating mass 6 arranged on the watch face 16 side is pivoted on one hand by a ball bearing 8 fixed to the movement 1 by means of a screw 10 (one of which is shown diagrammatically). On the other hand, it is integrated with the toothed ring 13. The rings 12 and 13 engage with the pinion 11 mounted on the module 14 on the outer periphery of the movement 1, and the module 14 itself is fixed to the movement by a screw 15. Needless to say, the teeth and modules of the rings 12, 13 and the pinion 11 are equal. In one embodiment shown, instead of providing an annular module 14, the pinion rotates freely over its movement, preferably across the movement, preferably from one side to the other in the peripheral area of the movement. Then, as will be described below, one is fixed to the mass 5 and the other is engaged with two toothed rings fixed to the mass 6.
[0018]
The eccentric system consists of two vibrating masses that cooperate with each other. The pinion 11 is given a rotational movement simultaneously or separately by the vibrating masses 5 and 6 via the rings 12 and 13 respectively. The energy formed by the oscillating motion of the two masses 5 and 6 is merged. These masses must therefore be mounted so that their centers of gravity are located in one and the same plane through which the axis of rotation 2 passes and occupy the same angular position, ie on the same side with respect to this axis. is there.
[0019]
In the above-described embodiment, if the axes of the two masses 5 and 6 coincide with the axis 2 of the watch, it is preferable that these masses have different supports, but they are not necessarily coaxial. In any case, these supports must be parallel to each other and parallel to the axis of the watch, and the teeth of the members 11, 12 and 13 must be limited in different ways.
[0020]
The dial 16 can be formed as a mass and thus as a coronal member concentric with the movement 1 and can be located on the upper surface of this mass. Of course, the cross section of the dial can be of different shapes, i.e. the dial can partially receive the vibrating mass 6 and only a particular section of the surface 17 of this mass can be seen. . The surface 17 can have various decorative members or motifs, and it is possible to insert a jewel into the surface 17.
[0021]
FIG. 2 is a half-sectional view of an automatic mainspring winding timepiece. This timepiece has a movement 21 having an axis 22, display mechanisms 23 and 24, a common axis 20, and two oscillating masses eccentric to the axis 22 of the timepiece. 25 and 26 and a dial 27. The downward vibration mass 25 is arranged on the receiving side of the movement 21. The upper mass 26 is arranged on the dial plate 27 side. The ball bearing 30 is fixed to the plate of the movement 21 by its outer ring. According to this embodiment, the masses 25 and 26 are integrated with each other via the inner ring 31 of the bearing 30, and these masses are fixed to the bearing by screws 28 and 29. The ring 31 forms a common axis for these masses.
[0022]
As in the case of the first embodiment, the downward vibration mass 25 integrated with one drive wheel 32 corresponds to a normal vibration mass mounted on a conventional automatic mainspring winding timepiece. However, the mass 25 in this case is embedded in the air gap (its practical boundary is complemented by the chain line 25A), which can considerably reduce the total thickness of the watch.
[0023]
It can be seen that the diameter of the mass 26 relative to the radius of the movement 21 is selected so that the member 33 carrying the display mechanisms 23, 24 passes through this mass side. According to one embodiment, the diameter of the mass 25 is larger than the radius of the movement 21 and the diameter of the mass 26 is smaller than the radius of the movement.
[0024]
In this embodiment as well, the eccentric system has two oscillating masses that cooperate with each other and perform the same oscillating motion. The energy generated by this movement is merged, and the masses 25 and 26, like the masses 5 and 6 in the first embodiment, are located in the same plane through which the rotational axis 20 passes. To occupy the same angular position.
[0025]
The dial plate 27 is made to have a decorative hole in whole or in part, or is formed to have a desired cutting shape so that the whole or part of the upper surface 26A of the mass 26 can be seen. As in the case of the first embodiment, the surface 26A of the upper mass 26 has a decorative member or various ideas or motifs, and can be fitted with jewelry.
[0026]
The device of the present invention allows the vibrating mass directly across the dial to function "actively" while simultaneously presenting all decorative motifs.
[Brief description of the drawings]
FIG. 1 is a partial sectional view of a timepiece taken along the plane through which the axis of an automatic mainspring timepiece passes, showing an embodiment of the device according to the invention.
FIG. 2 is a partial sectional view of a timepiece taken along the plane through which the axis of the automatic mainspring winding watch passes, showing a second embodiment.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Movement 3, 4 Display mechanism 5, 6 Vibration mass 7, 8 Ball bearing 9, 10 Screw 11 Pinion 12, 13 Ring 14 Module 15 Screw 16 Dial 17 Upper surface 20 Rotation axis 21 Movement 23, 24 Display mechanism 25, 26 Vibration mass 26A Upper surface 28, 29 Screw 30 Ball bearing 31 Inner ring 32 Drive wheel

Claims (13)

In a watch mainspring winding device having a drive member formed by an eccentric system, at least partially visible, said system has two oscillating masses (5, 6; 25, 26), which are connected Characterized in that they are connected by a device and arranged on both sides of the movement (1; 21) of the watch, ie one mass is arranged on the watch movement receiver side and another mass is arranged on the watch dial side. The mainspring winding device. The mass can oscillate around a common axis (2, 20) that coincides with or is parallel to the axis (2, 22) of the watch, and the center of gravity of the two masses is the axis of rotation (2; The mainspring winding device according to claim 1, wherein the mainspring winding device is located in the same plane including 20) and has the same angular position with respect to the axis. The connecting device is formed by two toothed rings (12, 13), one of which (12) is integrated with the mass located on the side of the movement receiver of the watch and the other (13) is the watch 1 or 2 according to claim 1 or 2, wherein there is one moving body (11) integrated with the mass located on the side of the dial and the two rings are respectively engaged with this moving body (11). The mainspring winding device described. The mainspring winding device according to claim 3, wherein the moving body (11) is mounted in an annular module support (14) formed in a peripheral area of the movement. The mainspring winding device according to claim 3, wherein the moving body (11) traverses the timepiece movement (1) from one side to the other. 6. At least one of the two oscillating masses (5, 6) comprises a ball bearing and is secured by its outer ring and can be rotated by this bearing. Spring winding device. The mainspring winding device according to any one of claims 1 to 6, wherein the axis of the vibrating mass (5, 6) is located on the same support and coincides with the axis (2) of the watch movement. The mainspring winding device according to claim 1 or 2, wherein the device for connecting the oscillating mass (25, 26) is a shaft having a common axis (20) eccentric with respect to the time axis (22) of the watch. The mainspring winding device according to claim 8, wherein the shaft having the common axis (20) is formed by the inner ring (31) of the bearing (30). A mass (25) located on the movement receiver side of the watch is embedded in the movement, and the size of the mass (26) is defined so that it can pass through the member (33) carrying the display mechanism (23, 24). The mainspring winding device according to claim 1, 2, 8, or 9. 11. A mainspring winding device according to claim 10, wherein the diameter of the mass (25) is larger than the radius of the movement, and the diameter of the mass (26) located on the dial side is smaller than the radius of the movement. An automatic mainspring timepiece comprising the device according to any one of claims 1 to 11. Comprising a dial (16; 27) with a decorative hole, the upper surface (17; 26A) of the mass (6; 26) located on the side of this dial being at least partially visible, The automatic mainspring winding timepiece according to claim 12.

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