JP2001221867A - Driving device for watch movement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a watch movement driving device which has a large actuation accumulation, is provided with an actuation accumulation indication, and can wind up a winding rotating body without damaging the body, even when the value of the actuation accumulation indication is exceeded. SOLUTION: This watch movement driving device, having the large actuation accumulation, is provided with two barrel drum groups, each of which is composed of two barrel drums having a common shaft 6 or 14. The first barrel drum 7 has a first spring 9, the external end of which is integrated with a friction band. The second barrel drum 8 drives the third barrel drum 15 via an idle gear 13. The internal ends of springs 9 and 12 and 17 and 18 are respectively fixed to the common shafts 6 and 14, and the external ends of the springs except the first spring 7 are respectively united with their, corresponding barrel drums 8, 15, and 16 in a single body. The fourth barrel drum 16 drives finish train wheels 19, 20, 21, and 22, and the first barrel drum 7 drives a click 10 which follows the action of a spring that enabled the click 10 to be rotatable in only one direction. The first barrel drum 7 is connected to the winding rotating body, which is driven by means of a winding train wheel starting from a crown.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION The present invention relates to a movement of a timepiece having a large working accumulation, more particularly to a drive comprising a plurality of barrels, a manual hoisting train of this drive and, in some cases, a working storage. The present invention is directed to a mechanical device having a display train wheel.

[0002]

2. Description of the Related Art For example, documents CH-599, 580 and CH- for driving devices for timepiece movements comprising two barrels in series or in parallel.
538, 715 are known. Such a drive can achieve a working accumulation of the order of 70 hours, but is considered insufficient.

[0003] The compound barrel drive of document FR-11995976 is also known, the firing of which consists of a plurality of spirals mounted in series on one or more parallel axes. However, this device is very bulky and not suitable for pocket watch or watch movements.

One of the objects of the invention is to realize a drive for a watch movement, in particular for a pocket watch or wristwatch, which drive occupies a volume which can be adapted to the diameter of the pocket watch or wristwatch. And to be able to obtain a working accumulation of more than one week, preferably 8 to 10 days.

Another object of the present invention is to provide the drive unit with a train of operation accumulation display.

It is another object of the present invention to be able to wind up the drive beyond the value corresponding to the maximum indication of actuation accumulation, without disturbing this indication.

It is yet another object of the present invention to provide a device in a drive that allows a user to manually wind the drive beyond the maximum number of windings without damaging it. It is to be.

[0008]

Means for solving the problems of the present invention are as follows. Firstly, a drive for a watch movement having a large working accumulation, comprising two groups of at least two barrels which are concentric and have a common axis, and wherein the first barrel 7 of the first group is a second barrel. The first barrel of the first group has a friction band that slides in the first barrel of the first group, and the last barrel of the first group has a play of barrel. Driving the first barrel 15 of the second group via the gear 13 and the inner ends of the barrels (9,12; 17,18) of the barrels of each group are connected to the common shaft (6,14) of the respective group. Fixed and all other issues (1 except the first issue 9 of the first group)
The outer ends of the corresponding barrels (8, 15, 18)
16), and that the last barrel 16 of the second group is the finished train wheel (19,
20, 21, 22), while the first barrel 7 of the first group drives the spring 10 following the action of a spring 11, which allows its rotation in only one direction; The first barrel 7 of the group is a hoisting train (27, 2) which is activated by the crown 2 of the watch movement.
6, 25, 24, 23) coupled to a hoisting rotary body (23, 24) driven by the hoisting rotary body (23, 24). -Secondly, the apparatus according to the first, characterized in that each group of barrels has the same number of barrels. Thirdly, the device according to the first or the second, characterized in that each group of barrels has two barrels. Fourthly, the apparatus according to any one of the first to third aspects, wherein the hoisting rotator (23, 24) is a multiplication rotator. Fifth, there is further provided a wheel train (30 to 48) of an operation accumulation display including a display rotating body 46, and a shaft 45 of the display rotating body
Carries a hand 5 which cooperates with the scale 4 of the dial 3 of the timepiece movement, the display rotator comprising a gear 44 mounted on the display rotator by a friction clutch, An apparatus according to any one of claims 1 to 4. Sixth, the gear 44, which is frictionally mounted on the display rotating body 46, simultaneously moves via a differential between the first barrel 7 of the first group and the last barrel 16 of the second group. The device according to claim 5, characterized in that the devices are logically connected. Seventh, the indicator rotator 46 has a pin 47 cooperating with a bearing 48 defining the angular position of this rotator, for which the needle 5 indicates on a scale the maximum actuation accumulation. The device according to claim 6, characterized in that: Eighth, the device according to claim 7, characterized in that when the driving device is wound up, when the barrel is completely wound up and the state of winding up of the sprung is ensured, the position of the needle showing the maximum working accumulation is reached. . Ninth, having a differential, the differential having an axis 32,
The shaft 32 is provided with a pinion 33 and is integral with a second idle gear 31 with an operating time indicator which is kinematically connected to the first barrel 7 of the first group; Is the pointed axis of a differential gear 34 kinematically connected to the last barrel 16 of the second group, and this axis 32
Is also the axle of the differential rotator, which is a pinion 3 kinematically connected to the gear 44 of the display rotator 46.
Eighth, characterized in that it comprises a gear 36 connected to a pinion 33 of a shaft 32 of the differential by a planetary device (38, 39) rotating a shaft 37 carried by a differential gear 34. An apparatus according to claim 1. Tenth, the second idler gear 31 of the actuation accumulation display is connected to the first barrel 7 of the first group by the first idler gear 30.
And the pinion 35 of the differential rotating body is connected to the gear 44 of the display rotating body by two idle gears (40,
41. The apparatus according to ninth aspect, wherein the apparatus is connected via (41), (42, 43). Eleventh or ninth or tenth, wherein the differential gear 34 directly meshes with the last barrel 16 of the second group.
An apparatus according to claim 1.

[0009]

DETAILED DESCRIPTION OF THE INVENTION The present invention is directed to a watch movement, in particular for a wristwatch and a pocket watch, the watch movement having a large working accumulation and including a drive which is wound by a hoisting train. Interlocking finish trains distinguished by the features revealed. The accompanying drawings schematically show, by way of example only, one form of realization of the drive and its hoisting wheel train, as well as one form of realization of the train of actuation storage displays.

FIG. 1 shows a section of a drive according to the invention in section.

FIG. 2 shows a cross section of a part of the drive unit and its hoisting wheel train.

FIG. 3 is a cross-sectional view of a part of the drive unit and a wheel train of the operation accumulation display.

FIG. 4 is a reduced sectional view showing the drive unit and the finishing wheel train.

FIGS. 5 and 6 are plan views of the drive train and the wheel train of the operation accumulation display.

FIG. 7 is a plan view of a wristwatch provided with the mechanical device according to the present invention.

The watch part in the example shown in FIG. 7 is a wristwatch having a movement arranged in a case 1 provided with a crown 2, and a dial 3 of the movement has a time display, a small second hand, and a date display. , And a scale 4 having a number from 0 to 8 indicating the working accumulation in days, and a working accumulation display with a hand 5 cooperating with the scale 4.

The timepiece movement according to the present invention comprises:
It has a large working accumulation of at least one week for 0 days. In this way, the user only needs to wind the wristwatch once a week, and the drive torque is sufficiently stable to guarantee the required operating accuracy of the chronometer.

This watch movement with a large working accumulation has four barrels, one manual hoisting wheel train and, in the implementation shown, one wheel train with a working accumulation display.
It has a drive mechanical device provided.

The driving device of the timepiece movement has two groups in which two stacked barrels are arranged side by side.

As shown in FIG. 1, a first group of stacked barrels comprises two barrels mounted on a common shaft 6 and rotating coaxially, namely a first barrel (the first barrel of the first group) 7 And a second barrel (the last barrel of the first group) 8. The first barrel 7 accommodates the first firing 9, and the inner end of the firing 9 is integrated with the barrel true 6 ′,
On the other hand, the outer end is integrated with a friction band that can slide in the first barrel when the friction force exceeds a predetermined value. The first barrel 7 is provided with external teeth connected to the kaze 10 under the action of a spring 11 so that the first barrel can only rotate in one direction. The second barrel 8 encloses the second barrel 12, the inner end of which is integral with the barrel 6 ′, but the outer end of which is integral with the second barrel 8.

As shown in FIGS. 4 and 5, the second barrel 8
Has external teeth connected to the play gear 13 of the barrel.

As shown in FIGS. 3-5, a second group of two barrels stacked together has a common axis 14 in which a third barrel (the first barrel of the second group) 15 and a fourth barrel 15 are provided. Is mounted so as to rotate. The third barrel 15 has external teeth connected to the idler gear 13 of the barrel, encloses the third ridge 17, the outer end of which is integral with the third barrel 15, The inner end is integrated with the barrel 14 '. The fourth barrel 16 encloses the fourth bar 18, and the inner end of the bar 18 is the barrel 1
4 ′, while the outer end is the fourth barrel 1
6 and one. This fourth barrel 16 has external teeth.

This realization of the drive, formed from two groups of two barrels stacked one on top of the other, allows the drive to occupy a very large volume while remaining small enough to be incorporated into a watch movement. , Approximately 10 days of operation accumulation.

As shown in FIG. 5, the movement of the present invention comprises, in the example shown, a finishing wheel train having a gear 19 which meshes with the external teeth of the fourth barrel 16 and the pinion 20. Reference numeral 21 is connected to a pinion 22 of the timepiece movement. The rest of the watch movement is conventional and will not be described here.

The particularity of this drive is that it consists of two groups of two barrels which are concentrically superimposed, the second and third barrels being connected via the play gear of the barrel, The barrel 7 has a sliding spring band to avoid any excessive pulling in the train wheel,
On the other hand, the other three barrels 8, 15, 16 are provided with the same firing as the manually wound timepiece. The four barrels are
Mounted in parallel to add an unwind period with a constant torque, the four firings have the same or nearly the same characteristics. The first band 9 and the first barrel 7
Is greater than the torque provided by the spikes 9, 12, 17, 18 in the fully wound state.

This drive device drives the timepiece movement via the finishing wheel train and is manually wound by the hoisting wheel train. As shown in FIGS. 2 and 5, this manual hoisting train has a first hoisting rotary body, the gear 23 of which is connected to the teeth of the first barrel 7, and the pinion 24 meshes with the round wheel 25. . This round wheel 25 is connected to the wheel 26 when the winding stem 27 is at the position where it has entered from the winding.

As described above, the winding of the apparatus is performed by the crown 2 through the hoisting trains 27, 26, 25, 24, and 23 to the first barrel 7, and the first barrel 7 is moved by the spring 9 thereof. Connected to barrel 6 ', the second barrel 8
And the third barrel 15 and the barrel 17 via the play gear 13 of the barrel, and the barrel 14 '
Then, the fourth barrel 16 and the splicer 18 are wound up.

When unwinding, the driving device operates the fourth barrel 16
Thus, the finishing wheel train is driven via the center wheel & pinion 19.

The hoisting wheel train allows the first multiply hoisting rotator 23, which allows quicker hoisting of the four barrels.
Note that it has 24.

In the embodiment shown, the drive also comprises a wheel train with a working-accumulation display, in particular shown in section in FIG.

The operation accumulation display device, that is, the wheel train of the operation accumulation display for operating the scale 4 and the needle 5 shown in FIG. 7 is connected to the teeth of the first barrel 7 as shown in FIGS. A first idler gear 30 for actuation display, which engages with a second idler gear 31 for actuation accumulation, which is angularly integrated with the shaft 32. This shaft 32
Is provided with a pinion 33, and serves as a sharp axis of a differential gear 34 connected to the teeth of the fourth barrel 16. This axis is also the sharp axis of the differential rotating body including the pinion 35 and the gear 36. The planetary rotator rotates on a shaft 37 integrated with the differential gear 34. The planetary rotator includes a pinion 38 connected to the gear 36 of the differential rotator and a gear 39 connected to the pinion 33 of the shaft 32.

The pinion 35 of the differential rotating body is connected to the first idle gear 40 of the operation accumulation display, and the pinion 41 of the idle gear 40 meshes with the second idle gear 42 of the operation accumulation display, The pinion 43 of the gear 42 is connected to the gear 44 of the display rotator 46, and the shaft 45 of the display rotator has a needle 5 for indicating the operation accumulation.

The gear 44 of the display rotator is connected to the display rotator 4.
5, 46 are attached to frictionally. The display rotating bodies 45 and 46 include pins 47 that cooperate with a fixed bearing 48.

When the pin 47 is supported by the bearing 48,
The actuation accumulation indicator hand 5 is in front of the largest number of scales 4, indicating that the actuation accumulation is at its maximum value.

The maximum value of the indication of the operation accumulation corresponds to a complete winding of the drive. When the drive device is wound up, the hand 5 reaches the end of the stroke, and the display rotating body 46
It is held at this angular position by the pin 47 and the bearing 48. When the end of the winding of the drive is exceeded, the action of the train of operation accumulation display on the display rotating body causes the friction clutch, that is, the drive to be completely wound and the first spring 9 of the first barrel to be wound. Obi is the first barrel 7
Until the moment of sliding in, the gear 44 moves angularly.

Thanks to the two frictional tendencies, one is the friction between the gear 44 and the display rotator 46, the other between the band of the first sprung 9 and the first barrel 7. Although less than one friction, two effects are obtained.

First, it is ensured that the train wheel is not subjected to excessive pulling. Then, the needle 5 shows a maximum actuation accumulation corresponding to a complete winding of the drive. An inevitable consequence of this is that when the hand 5 indicates zero on the actuation accumulation scale 4, the drive has not yet been fully unscrewed, but has sufficient torque for the successful operation of the watch movement. It is still guaranteed.
Thus, it is ensured that the user winds up the mainspring before his or her watch stops.

During winding, the first barrel 7 includes a first operation accumulation play gear 30, a second operation accumulation play gear 31,
Accordingly, the pinion 33, the planetary rotating bodies 38, 39 and the pinion 35 are driven, and the pinion is composed of two operation accumulation display idle gears (40, 41) and (42, 43).
The display rotator 46 with the needle 5 is driven via this until the needle 5 indicates the maximum value of the actuation accumulation, at which time the display rotator is fixed by a pin 47 in contact with a bearing 48.

Until the four lines are completely wound up and the band of the first line 9 slides on the first barrel 7, the user
The winding of the spring of the gear 44, which can be rubbed into the driving device, that is, the display rotating body 46 by friction, can be continued.

During unwinding, the display rotating body 46 and its gear 44 are connected to the fourth barrel 16, the differential gear 34, the planetary rotating bodies 38 and 39, the differential rotating bodies 35 and 36, and the idle gear (the operation accumulation display). 40, 41) and (42, 43). Upon unwinding, the pin 47 moves freely without any friction between the gear 44 and the display rotator 46. Thus, the needle 5 is completely unscrewed after reaching the zero front of the scale 4.

In one variant, the drive is a concentric 3
Can have two groups of three barrels, the third of which (the last barrel of the first group) by the play gear 13 of the barrel, the fourth (the first barrel of the second group)
Can be driven. The number of barrels in each group depends on the available height in the movement. The greater the number of barrels mounted in parallel, the greater the total operating accumulation of the drive.

The idle gears 40, 41; 4 of the operation accumulation display
The number of 2,43 can be different in other configurations. What is important in the train of actuation accumulation displays is to have a first drive coming from the first barrel of the first group and a second drive coming from the last barrel of the second group, wherein the second drive is Driving the display rotator via a differential rotator and a planetary rotator proportional to the differential speed between the first barrel of the first group and the last barrel of the second group. In addition, the indicator rotator 46 and its gear 44 are connected by a friction clutch, such that, for example, as in the case of a barrel with a self-winding movement, a friction band causes the first spawn to become the first barrel of the first group. It is important that you are connected.

[0043]

According to the invention, it is possible to realize a drive for a watch movement, in particular for a pocket watch or watch, which has an occupied volume which can be adapted to the diameter of the watch or watch. Then, a working accumulation of more than one week, preferably 8 to 10 days, can be obtained. In addition, the driving device is provided with a train of operation accumulation display, and the driving device can be wound beyond the value corresponding to the maximum display of operation accumulation without disturbing the display. In addition, the drive can be manually wound if the user exceeds the maximum number of windings without damaging it.

[Brief description of the drawings]

FIG. 1 shows a part of a drive according to the invention in cross section.

FIG. 2 shows a section of a drive and its hoisting train in section.

FIG. 3 shows, in section, a part of the drive and the train of actuation accumulation indications thereof.

FIG. 4 is a reduced sectional view showing the driving device and the finishing wheel train.

FIG. 5 is a plan view of a wheel train of the driving device.

FIG. 6 is a plan view of a train wheel of an operation accumulation display.

FIG. 7 is a plan view of a wristwatch equipped with the mechanical device according to the present invention.

[Explanation of symbols]

 1 Case 2 Crown 3 Dial 4 Scale 5 Needles 6 Axle 6 'Incense Box Shin 7 First Incense Box (First Incense Box of First Group) 8 Second Incense Box (Last Incense Box of First Group) 9 First Trigger REFERENCE SIGNS LIST 10 kohaze 11 kohaze spring 12 second spring 13 idle gear 14 axle 14 'barrel full 15 third barrel (first barrel in second group) 16 fourth barrel (last barrel in second group) 17 Third spawn 18 Fourth spawn 19 Gear 20 Pinion 21 Gear 22 Pinion 23 Gear 24 Pinion 25 Round hole wheel 26 Wheel 27 Self winding 30 First idle gear 31 Second idle gear 32 Shaft of differential rotating body 33 Pinion 34 Differential gear 35 Pinion of differential rotating body 36 Gear of differential rotating body 37 Shaft of planetary rotating body 38 Pinion of planetary rotating body 39 Gear of planetary rotating body 40 Operation accumulation display Pinion of idle gear of operation accumulation display 42 Pinion of idle gear of operation accumulation display 43 Pinion of idle gear of operation accumulation display 44 Gear of rotation body indicating operation accumulation 45 Display of operation accumulation Shaft of rotating body 46 Display of operation accumulation Pinion of rotating body 47 Pin 48 Bearing

Claims (11)

[Claims] 1. A drive for a timepiece movement having a large working accumulation, comprising two groups of at least two barrels which are concentric and have a common axis;
That the first barrel of the first group has a sprung, the outer end of which is integral with the friction band sliding in the first barrel of the first group, and that the last barrel of the first group is Driving the first barrel of the second group via the play gear of the barrel, the inner end of the firing of the barrel of each group being fixed to the common axis of the respective group, and The outer end of all but one of the firings is integral with the corresponding barrel, and the last barrel of the second group drives the finishing train of the watch movement, while the first The first barrel of the group drives a kage that follows the action of a spring that allows its rotation in only one direction, and the first barrel of the first group is driven by a crown of a watch movement Driven by Apparatus characterized by linked hoisting rotating body and that. 2. The apparatus according to claim 1, wherein each group of barrels has the same number of barrels. 3. The device according to claim 1, wherein each group of barrels has two barrels. 4. The device according to claim 1, wherein the hoisting rotator is a multiplication rotator. 5. The system according to claim 1, further comprising a wheel train of an operation accumulation display including a display rotating body, wherein a shaft of the display rotating body carries a hand cooperating with a dial of a clock movement, and the display rotating body includes: And a gear mounted on said display rotator by a friction clutch.
An apparatus according to any one of the preceding claims. 6. Gears frictionally mounted on the display rotary body are kinematically connected via a differential to the first barrel of the first group and the last barrel of the second group simultaneously. Apparatus according to claim 5, characterized in that: 7. The display rotator has a pin cooperating with a bearing defining an angular position of the rotator, for which the needle indicates on a scale the maximum working accumulation. An apparatus according to claim 6. 8. When the driving device is wound up, if the barrel is completely wound up and the state of winding up is ensured,
Device according to claim 7, characterized in that the position of the needle showing the maximum actuation accumulation is reached. 9. A differential having a differential, the differential having an axis,
The shaft is provided with a pinion and is integral with a second idler gear with an operating time indicator kinematically connected to the first barrel of the first group; Becoming the cusp axis of the differential gear kinematically connected to the last barrel, this axis also becomes the cusp axis of the differential rotating body, and the differential rotating body moves to the gear of the display rotating body. 9. The method according to claim 8, further comprising the step of: connecting a pinion which is mechanically connected and a gear which is connected to the pinion of the shaft of the differential by means of a planetary device which rotates the shaft carried by the differential. apparatus. 10. A second idler gear of the actuation accumulation display is connected by a first idler gear to the first barrel of the first group, and the pinion of the differential rotator is connected to the gear of the display rotator,
10. The device according to claim 9, wherein the device is connected via two idle gears of the operation accumulation display. 11. The differential gear according to claim 9, wherein the differential gear meshes directly with the last barrel of the second group.
An apparatus according to claim 1.