CN105637431A

CN105637431A - Power reserve indicator mechanism

Info

Publication number: CN105637431A
Application number: CN201480056918.6A
Authority: CN
Inventors: 大卫·康多
Original assignee: CHRONOMETRIE FERDINAND BERTHOUD SA
Current assignee: CHRONOMETRIE FERDINAND BERTHOUD SA
Priority date: 2013-11-04
Filing date: 2014-11-04
Publication date: 2016-06-01
Anticipated expiration: 2034-11-04
Also published as: EP2869137B1; EP2869137A1; CN105637431B; WO2015063336A3; WO2015063336A2; HK1219786A1

Abstract

The invention relates to a power reserve indicator mechanism (1) for a timepiece, including: a threaded pin (2) intended for being mounted secured to a case element of said timepiece; a cam (3) having an outer surface (7) tilted relative to said pin (2), the cam (3) being arranged such as to engage by screwing with the threaded pin (2); a driving mobile (10) of said cam (3), said driving mobile (10) being intended for being rotated in both directions of rotation by a barrel of said timepiece, and including at least one means for rotating (4) said cam (3), secured to said driving mobile; a sensor (5) in contact with said outer surface (7) of said came (3) and kinematically linked with a power reserve indicator.

Description

The indicating mechanism of power reserve

Technical field

The present invention relates to clock field. The invention particularly relates to the indicating mechanism of a kind of power reserve for timepiece.

Background technology

File EP1333341, CH95250 and CH330559 disclose the indicating mechanism of power reserve, and it uses the cam being swirled on thread spindle. Probe contacts with the surface of cam, and the indicator of probe and power reserve is in transmission connection. Traditional method is, when cam or thread spindle are connected with the drum drive of going barrel respectively, thread spindle or cam are connected with the spindle drive of going barrel. Therefore, when going barrel tightens, cam by means of the respective screw thread of axle and cam interaction in a first direction threadingly axle move. When going barrel discharges, cam in a second direction that is opposite the first direction threadingly axle move. Popping one's head in and follow the surface of cam when described motion occurs, and this motion is transferred to the indicator of power reserve, indicator is generally pin, disk etc.

The indicating mechanism of this power reserve is applicable to current modal going barrel, and the going barrel namely tightened by its main shaft, this going barrel drives clock and watch to move by being positioned at the gear teeth at roll circumference place. In this going barrel, the main shaft of cylinder and going barrel rotates respectively in the opposite rotation direction.

But, the indicating mechanism of this power reserve is not suitable for the going barrel being connected with stackfreed mechanism, and wherein going barrel is tightened by stackfreed. Therefore, in this mechanism, cylinder allows for rotating in two rotational directions. Additionally, the power reserve mechanism of prior art is little suitable for adopting so-called " suspension (volante) " mode to be installed in wrist-watch framework.

Therefore, it is an object of the invention to overcome at least to a certain extent the restriction of above-mentioned prior art.

Summary of the invention

More accurately, the present invention relates to the indicating mechanism of a kind of power reserve for timepiece, including:

-thread spindle, it is installed to the rack component of described timepiece for connecting;

-cam, it has the outer surface tilted towards described thread spindle, and cam is arranged by screwing (vissage) and threaded shaft fits;

-movable drive is taken turns, it is used for described cam, described movable drive wheel rotates in the two directions for the going barrel by means of described timepiece, and includes at least one driving device driving described cam to rotate, and this driving device connects with described movable drive wheel;

-probe, its described exterior surface with described cam and the indicator with power reserve are in transmission connection.

Due to these features, it is proposed that the indicating mechanism of the power reserve of a kind of going barrel being applicable to be connected with stackfreed mechanism. In addition, owing to thread spindle is fixedly installed on the element of timepiece frame, this results in very strong mechanical stability, this mechanism is readily employed the mode of " suspension " and configures, this is because because thread spindle can only be supported by one end or one end tightly and the other end supported lightly.

In a specific embodiment, at least one actuating device includes and at least one tenon of movable drive wheel connection. At least one tenon described is set to be substantially parallel to thread spindle and the opening through the correspondence being arranged in described cam, and this is driving cam rotation in a simple and reliable way, and also for the guiding of cam.

In another specific embodiment, cam is circular cone shape. This shape is advantageously easy, to manufacture.

In another specific embodiment, movable drive wheel is installed to be and rotates freely around described thread spindle. Therefore simple structure is obtained.

In another specific embodiment, probe includes roller, and the rocking bar (bascule) that roller contacts with the described inclined surface of described cam and is installed to be around probe rotates, and roller is preferably made up of ruby. So the friction between probe and cam is minimized, and also therefore decreases the abrasion of these parts. Preferably, to be set to the tangent line of the described outer surface with described cam vertical for the plane of described roller.

The invention still further relates to a kind of watch and clock movement, this movement includes going barrel and the indicating mechanism of power reserve as defined above, this going barrel is placed with former dynamic clockwork spring, this going barrel is in transmission connection with there being tooth movable part (mobiledent ��), this has tooth movable part for rotating along two direction of rotation when former dynamic clockwork spring electromotor tightens or discharges, described thread spindle is attached on the rack component of described watch and clock movement, and described movable drive wheel has tooth movable part to be in transmission connection with described.

Preferably, have described in tooth movable part be going barrel cylinder and/or described in have tooth movable part and described movable drive wheel directly to engage.

Finally, the present invention relates to a kind of timepiece, this timepiece includes watch and clock movement, it is therefore preferable to wrist-watch, as defined above.

Accompanying drawing explanation

Being read hereafter by reference accompanying drawing, other details of the present invention manifest with will be apparent from, in the accompanying drawings:

-Fig. 1 is the perspective view at the visual angle from below of the indicating mechanism of the power reserve according to the present invention;

-Fig. 2 is the perspective view at the visual angle from above of the indicating mechanism of the power reserve according to the present invention;

-Fig. 3 is the transverse cross-sectional view of the indicating mechanism of the power reserve according to the present invention.

Detailed description of the invention

Fig. 1 to 3 illustrates the indicating mechanism 1 of the power reserve according to the present invention. This mechanism includes thread spindle 2, and this thread spindle is for such as connecting by the frame (not shown) element of screw 8 with timepiece movement. Therefore thread spindle 2 is fixing, and can not be driven in rotation. For the sake of clarity, accompanying drawing is shown without the screw thread of thread spindle 2. If it is required, the end away from rack component of thread spindle 2 can be supported by the bearing 9 being arranged in additional bridge (not shown).

Cam 3 is engaged on thread spindle 2 and includes unshowned tapping, and this tapping is arranged for and coordinates with thread spindle 2 by screwing so that the rotating drive cam of cam 3 threadingly axle moves. Cam 3 has the outer surface 7 tilted towards described thread spindle. Although the cam being illustrated 3 has the shape of the truncated cone, but other shapes are equally possible, for instance have convex or concave outer surface 7 shape.

The movable drive wheel 10 of described cam 3 is installed to be to be had on threaded tenon shoulder 11 and is rotating freely around thread spindle 2, and the intercalated nucleus 12 as necessary by loop-shaped in the form of a ring is installed, and this intercalated nucleus is preferably made up of ruby.

Movable drive wheel 10 includes the actuating device that driving cam 3 rotates. Under special circumstances, this actuating device is made up of two tenons 4, and this tenon is fixed on the core of movable drive wheel 10 with bind mode and upwardly extends along vertical and substantially parallel with thread spindle 2 side of plane substantially taking turns 10 with movable drive. The corresponding opening 13 that these tenons 4 are passed through in cam 3 manufacturing, this cam can move along tenon, tenon 4 and opening 13 be sized so that cam 3 is guided by tenon 4. Certainly, other shapes of the actuating device that driving cam 3 rotates are foreseeable, and the number of these actuating devices can select according to the wish of clock and watchmaker. For example, it is also possible to it is envisioned that adopt the geometries such as such as starlike, polygon to substitute tenon 4, the wheel hub that this geometry is movable drive wheel 10 owns, and also identical with the effect of actuating device. The chamber of this geometry and the correspondingly-shaped in cam 3 interacts, and this is in order to the actuating device of cam 3 is hidden and in fact invisible from bridge side (from the summit of cone).

Movable drive wheel 10 is applicable to self and is driven by the rotation in the two directions of the rotating element of going barrel, and this rotation element is such as cylinder or the main shaft of going barrel. When going barrel (not shown) is connected to stackfreed mechanism, and the cylinder of going barrel in this case is connected on stackfreed by chain, rope etc., the cylinder of usual going barrel rotates and the main shaft of going barrel is fixing. In this case, movable drive wheel 10 has external gear teeth 14, and these gear teeth are for directly or indirectly being driven by the gear teeth of the protrusion of its periphery being usually located at going barrel.

Mechanism 1 is additionally included in the probe 5 of pivoting in the element of the frame of timepiece movement (not shown), and the end 17 of probe is kept in touch by the outer surface 7 of recovery device (not shown) with cam 3. It is known that when threadingly axle 2 moves cam 3, outer surface 7 is followed in the end 17 of probe 5. Advantageously, the end 17 of probe 5 is equipped with roller 6 in end, and this roller is installed to be and rotates freely and as cam-follower on probe. In order to reduce friction, roller 6 can be made up of ruby or have suitable cover layer.

Probe 5 is connected on the tooth bar 15 being in transmission connection with gear 16, and this gear is connected on the indicator (not shown) of the power reserve of such as pin, disk or the like. Alternatively, tooth bar 15 can be replaced by gear piece. Connection type between tooth bar 15 and gear 16 is in the scope of this those skilled in the art and need not describe in detail.

Referring now to the embodiment of Fig. 1 to 3, the operation principle of the indicating mechanism 1 of power reserve is illustrated.

In configuration shown in the figure, the former dynamic clockwork spring of the going barrel (not shown) that the indicating mechanism 1 of power reserve connects is in release conditions. Therefore, cam 3 is positioned near movable drive wheel 10, and roller 6 contacts with inclined surface 7 near cam 3 minimum diameter place.

When tightening to the former dynamic clockwork spring of going barrel, for instance due to the rotation of the cylinder of going barrel, movable drive wheel 10 rotates along the first direction of rotation. Under the effect of tenon 4, cam 3 rotates along the first direction of rotation around thread spindle 2. Thread spindle 2 is fixing, cam 3 due to screw thread threadingly axle 2 move and take turns 10 away from movable drive, opening 13 is guided by tenon 4.

When threadingly axle 2 moves cam 3, the inclined surface 7 of cam 3 is followed in the end 17 of probe 5, and the side that the diameter of this inclined surface takes turns 10 at movable drive is increased up. Therefore, pop one's head in around the rotating shaft rotation of self, drive gear 16 by tooth bar 15 simultaneously. Therefore, the indicator (not shown) of power reserve moves so that the power reserve that instruction increases.

When clockwork spring electromotor discharges, movable drive wheel 10 rotates in the second direction of rotation contrary with the first direction of rotation, and the direction that cam 3 also takes turns 10 towards movable drive is moved. The preceding paragraph fall described in action reversion, the indicator (not shown) of power reserve moves so that instruction reduce power reserve.

It will be obvious to a person skilled in the art that the indicating mechanism according to the power reserve of the present invention can adopt different modes to that indicated in the drawings to arrange, but carry out work in the same way. For example, it is possible to it is intended that the shape of cam 3 is set to and Fig. 1 to the negative shape shown in 3, namely cam points to the diameter of movable drive wheel 10 is minimum. This means or cam 3 direction that threadingly axle 2 moves overturns, or at gear 16 place rollback (renvoi), or the reverse display of power reserve.

Although present invention has disclosed the specific embodiments of reference, but the present invention is not limited to this specific example. The indicating mechanism of power reserve electricity can be modified by those skilled in the art under the premise without departing from the scope of the present invention being defined by the following claims.

Claims

1. the indicating mechanism (1) for the power reserve of timepiece, it is characterised in that described indicating mechanism (1) including:

-thread spindle (2), it is installed to the rack component of described timepiece for connecting;

-cam (3), it has the outer surface (7) tilted towards described thread spindle (2), and described cam (3) is arranged by screwing and coordinates with described thread spindle (2);

-movable drive wheel (10), it is used for described cam (3), described movable drive wheel (10) rotates in the two directions for the going barrel by means of described timepiece, and including at least one actuating device (4) driving described cam (3) to rotate, described actuating device and the wheel connection of described movable drive;

-probe (5), it contacts with the described outer surface (7) of described cam (3) and is in transmission connection with the indicator of power reserve.

2. the indicating mechanism (1) of the power reserve according to preceding claim, wherein, described at least one actuating device (4) includes taking turns, with described movable drive, at least one tenon (4) that (10) connect, and at least one tenon described is set to substantially parallel with described thread spindle (2) and passes the corresponding opening (13) being arranged in described cam (3).

3. the indicating mechanism (1) according to power reserve in any one of the preceding claims wherein, wherein, described cam (3) is circular cone shape.

4. the indicating mechanism (1) according to power reserve in any one of the preceding claims wherein, wherein, described movable drive wheel (10) is installed to be and rotates freely around described thread spindle (2).

5. the indicating mechanism (1) according to power reserve in any one of the preceding claims wherein, wherein, described probe (5) includes roller (6), the rocking bar that described roller contacts and is installed to be with described inclined surface (7) around described probe (5) rotates freely, and described roller (6) is preferably made up of ruby.

6. the indicating mechanism (1) according to power reserve in any one of the preceding claims wherein, wherein, the plane of described roller (6) is set to be perpendicular to the tangent line of described outer surface (7).

7. a watch and clock movement, including:

-going barrel, is wherein placed with former dynamic clockwork spring, and described going barrel is in transmission connection with there being tooth movable part, described in have tooth movable part for rotating along two direction of rotation when former dynamic clockwork spring tightens or discharges;

The indicating mechanism (1) of-power reserve according to any one of the claims, described thread spindle (2) is attached to the rack component of described watch and clock movement, and described movable drive wheel (10) has tooth movable part to be in transmission connection with described.

8. watch and clock movement according to claim 7, wherein, at least one is effective:

-described in have tooth movable part be the cylinder of described going barrel;

-described in have tooth movable part to take turns (10) with described movable drive directly to engage.

9. a timepiece, including watch and clock movement according to claim 8.