DE60025745T2 - MECHANICAL MOVEMENT WITH SMALL OR MEDIUM CUSTOMER - Google Patents

Abstract

The watch mechanism provides a cage and bearing structure providing simple construction of the seconds wheel. The mechanical watch movement comprises a cage provided with bearings and a mean wheel, and a second wheel at the centre of the escapement which pivots in the bearings in axes perpendicular to the plane of the cage. The cage comprises a first pair of bearings defining a first de-centred complementary pivot axis (E). This is placed such that the axis of the mean wheel (A) is at equal distances from this pivot axis and from the axis of the second wheel centred at (C). A second pair of bearing define a second de-centred complementary pivot axis (F), placed such that the axis of the escapement wheel (D) is at equal distances from the pivot axis and from the axis of the second wheel at the centre (C).

Description

The The present invention relates to mechanical timepieces comprising a Include seconds display. In particular, it relates to a mechanical movement, that on the same basis not only the free choice of a second display from the middle, at six o'clock or at nine o'clock, but also the Possibility, an attached in bridge-side elevation Chronograph mechanism recording the measured seconds, Displays minute and hour values.

It There are two conventional ones Display types of the second. At the oldest pocket and wristwatches The second hand usually turns concentrically to or on one small, decentered dial in relation to the lesson. Such a small second called arrangement can be found again in watches equipped with certain complications, such as the chronographs. By contrast, the second hand turns on most modern wristwatches concentric to the hour and minute hands, which is why it is thereby around so-called watches with second hand from the middle or central second hand These

In In recent years there have been numerous, with various additional, however, on the basis of one and the same movement equipped functions Clocks have been produced, with the functions of over or implemented under the clockwork mounted modules. Well can but, depending on the additional function, of the seconds display claimed space to be problematic.

The Difficulty is even greater in the Production of a chronograph watch, as this includes numerous hands. In this case, two different solutions are usually used. The first is to integrate the chronograph mechanism in the movement. This makes it possible a movement of low height but also requires the production of a complete set of tools, for one possibly limited Production, with correspondingly high costs. The second solution exists in it, a chronograph module along with an existing clockwork to obstruct. In fact However, lower costs result in a large elevation. In addition, the basic work needs usually some of these adjustments, often in the form of unsatisfactory compromises.

The The present invention aims at the manufacturing possibility based on and of the same caliber, of watches with different complications equipped can be or not, and that, regardless of the arrangement of the existing complications, include a seconds display.

• – ein erstes Lagerpaar, das eine erste, dezentrierte Zusatzachse bestimmt, die so angeordnet ist, dass die Mittelradachse im gleichen Abstand zu ihr und zur Achse des Zentralsekundenrades liegt, und
• – ein zweites Lagerpaar, das eine zweite, dezentrierte Zusatzachse bestimmt, die so angeordnet ist, dass die Hemmungsradachse im gleichen Abstand zu ihr und zur Achse des Zentralsekundenrades liegt.

More specifically, the mechanical movement of the present invention conventionally comprises a bearing cage, an elevator and hand adjusting shaft, a balance, and a center, center seconds and escapement wheel train, said balance and said wheels in the bearings, respectively rotate about an axis perpendicular to the cage plane and each include a wheel and a pinion. This movement is characterized in that the cage also comprises the following elements:

• - A first pair of bearings, which determines a first, decentralized additional axis, which is arranged so that the central wheel axis is equidistant from it and to the axis of the Zentralsekundenrades, and
• - A second pair of bearings, which determines a second, decentered additional axis, which is arranged so that the Hemmungsradachse is equidistant from it and to the axis of the Zentralsekundenrades.

• – das Mittelrad durch seinen Trieb angetrieben wird,
• – der Zentralsekundenradtrieb im Eingriff mit dem besagten Mittelrad steht, und
• – der Hemmungsradtrieb im Eingriff mit dem Zentralsekundenrad steht.

Advantageously, it is such that:

• - the middle wheel is driven by its drive,
• - The Zentralsekundenradtrieb is engaged with said middle wheel, and
• - The Hemmungsradtrieb is engaged with the Zentralsekundenrad.

• – die beiden Zusatzachsen liegen in ziemlich gleichem Abstand zur Zentralsekundenradachse;
• – diese beiden Zusatzachsen liegen auf zwei rechtwinklig zueinander, bzw. bei neun respektive sechs Uhr angeordneten Radien des Uhrwerks,
• – der Abstand, der die beiden Zusatzachsen von der Zentralsekundenradachse trennt, entspricht ziemlich genau dem halben Uhrwerksradius;
• – der Abstand, der die Mittelradachse von der ersten Zusatzachse und von der Zentralsekundenradachse trennt, entspricht der Summe der Radien des Mittelrades und des Zentralsekundenradtriebs;
• – der Abstand, der die Hemmungsradachse von der zweiten Zusatzachse und von der Zentralsekundenradachse trennt, entspricht der Summe der Radien des Zentralsekundenrades und des Hemungsradtriebs;
• – die Unruhachse ist in dem Quadrant angeordnet, der durch die Radien bei neun und sechs Uhr gebildet wird, auf denen die beiden Zusatzachsen respektive angeordnet sind.

The movement according to the invention still has the following important properties:

• - The two additional axes are at a fairly equal distance to the Zentralsekundenradachse;
• - These two additional axes are on two perpendicular to each other, or at nine or six o'clock arranged radii of the movement,
• - The distance separating the two additional axes of the Zentralsekundenradachse, corresponds to almost exactly half the clockwork radius;
• The distance separating the mid-wheel axis from the first additional axis and the central second-wheel axis corresponds to the sum of the radii of the middle wheel and the central second wheel drive;
• - The distance separating the Hemmungsradachse from the second additional axis and the Zentralsekundenradachse corresponds to the sum of the radii of the Zentralsekundenrades and the Hemungsradtriebs;
• - The balance is arranged in the quadrant, which is formed by the radii at nine and six o'clock, on which the two additional axes are respectively arranged.

According to one first interpretation of the Clockwork, sits on the central second wheel shaft, a large second hand.

According to one second design option of the movement, becomes a second drive in mesh with the middle wheel added at nine o'clock, which rotates about the first additional axis and with the Zentralsekundenradtrieb is identical. On the second drive at nine o'clock then sits small second hand.

According to one third interpretation possibility of Clockwork, is a standing in engagement with the escapement wheel drive Added second wheel at six o'clock, which turns around the second additional axle and is identical to the central second wheel. On the second wheel shaft at six o'clock then sits a small second hand.

According to one fourth interpretation possibility of Clockwork, finally includes the cage a third bearing pair, the third, decentred additional rotation axis Definitely, that's pretty on its three o'clock radius exactly the same distance to the Zentralsekundenradachse as the two other additional axes is. In this case, one engages with the middle wheel standing, about the first additional axis rotating and identical to the Zentralsekundenradtrieb second wheel drive at Nine o'clock, as well as a chronograph wheelwork, the one to said shoot coaxial and firmly connected to this drive wheel, one to the Zentralsekundenrad Coaxial chronograph second wheel, one around the third additional axle rotating chronograph minute wheel and one around the second additional axle rotating chronograph hour wheel included, added.

• – sitzt auf dem Chronographensekundenrad ein großer Sekundenzeiger,
• – sitzt auf dem Chronographenminutenrad ein kleiner Minutenzeiger,
• – sitzt auf dem Chronographenstundenrad ein kleiner Stundenzeiger, und
• – sitzt auf dem Sekundentrieb bei neun Uhr ein kleiner Sekundenzeiger.

In this fourth interpretation:

• - a large second hand sits on the chronograph second wheel,
• - a minute minute hand sits on the chronograph minute wheel,
• - sits on the chronograph hour wheel a small hour hand, and
• - sits on the second drive at nine o'clock a small second hand.

Further Advantages and characteristics of the invention will become apparent from the following Description, which refers to the attached drawing and the following illustrates:

the 1 to 3 represent the obverse of clocks with second hand arranged in the center, at nine o'clock and at six o'clock;

the 4 represents the front of a chronograph watch;

the 5 and 6 represent, perspective bottom side, respectively in partial section seen, an inventive clockwork, as in the clock of the 1 comes to installation;

the 7 and 8th represent, perspective bottom side, respectively in partial section seen, an inventive clockwork, as in the clock of the 2 comes to installation;

the 9 and 10 represent, perspective bottom side, respectively in partial section seen, an inventive clockwork, as in the clock of the 3 comes to installation, and finally

put the 11 and 12 , Perspective bottom side, respectively, seen in partial section, an inventive movement is, as in the chronograph of the 3 comes to installation.

The 1 to 3 represent the front of watches, each one housing 10 , a dial 12 and hands indicating hour and minute 14 respectively 16 include.

The clock of 1 , of the so-called second-by-second type, also includes a second indicator, which is coaxial with the hands 14 and 16 arranged second hand 18 is taught.

The watches of 2 and 3 are of the so-called small second type. Is considered more closely on the 2 a clock is shown, the seconds display on a arranged at nine o'clock small second hand 20 done while 3 shows a clock where the seconds display is over a small second hand arranged at six o'clock 22 he follows.

The chronograph watch of the 4 shows how the the 3 , the seconds over a small second hand 20 but it also shows a pointer from the middle 24 , a little pointer 26 at three o'clock and a small hand 28 at six o'clock the measured seconds, respectively minutes, respectively hour values.

According to the present Invention can, starting from one and the same basis, each of four above interpretations by means of a very limited number depending on the desired design to be installed or not to be installed additional parts be implemented.

First of all, on the 5 and 6 Reference is made, which represent a first interpretation of the movement according to the invention, with central second hand, it should be noted that the 6 a sectional view of the 5 after the section line VI-VI. The movement conventionally comprises a cage passing through a work plate 30 and is formed by bridges, which were not shown to facilitate the interpretation of the drawing, except (only on 6 ersichtli chen) gear train bridge 32 , The cage carries a plurality of for receiving the rotating parts of the factory, and in particular a gear train 36 , an inhibition 38 and a balance 40 certain camps 34 , The gear train 36 includes a plurality of wheels, underneath, as seen in the drawing, a center wheel 42 , a central second wheel 44 whose shoot with the middle wheel 42 engaged, and an escapement wheel 46 whose impulse with the central second wheel 44 is engaged. The latter includes a wave 44a whose zifterblattseitiges end with a pin 44b is provided on the central second hand 18 ( 1 ) is pressed.

Also in a conventional manner, the drive energy is stored in a spring, which is housed in a barrel, the center wheel via a large center wheel 42 drives. In order not to overload the drawing, the barrel and the large center wheel were not shown on the drawing.

Camps 34 determine in pairs perpendicular to the work plane running, characterized by capital letters axes, namely A for the middle wheel 42 , B for the balance 40 , C for the central wheel 44 and D for the escape wheel 46 ,

The cage also carries a pointer adjusting shaft 48 , which is arranged at three o'clock and aligned to the work center.

The present invention mainly relates to the manner of positioning the wheels of the movement so as to allow the optional positioning of the second hand at three positions, in the center (FIG. 5 and 6 ), or at nine o'clock ( 7 and 8th ) respectively at six o'clock ( 9 and 10 ).

For this purpose, the cage comprises, with further reference to the 5 , two additional pairs of bearings 34 which determine an axis E for a small second hand at nine o'clock, and an axis F for a small second hand at six o'clock, as will be apparent from the remainder of the description.

For the description of the relative positions of the axes A, B, C, D, E and F is particularly to the 5 Reference is made, on which a diameter of three o'clock - nine o'clock corresponding horizontal axis X and a diameter twelve o'clock - six o'clock corresponding vertical axis Y can be seen.

The small second axis E at nine o'clock is located on the X axis at a distance a from the center of the movement that is approximately equal to half its radius. The small second axis F at six o'clock is located on the Y axis at a fairly equal distance a to the center.

The axis A of the middle wheel 42 is arranged between the axes C and E equidistant from them, this distance being the sum of the radii b of the center wheel 42 respectively c of the central second wheel drive 44 equivalent. More precisely, the axis A lies on a radius of the movement, which forms an angle α to the X-axis, which is so dimensioned that cos α = a / 2 (b + c). On the 5 it can be seen that this angle is advantageously about 30 °.

The axis D of the escapement wheel 46 is arranged between the axes C and F equidistant from them, this distance being the sum of the radii d of the central second wheel 44 respectively e of Hemmungsradtriebs 46 equivalent. More precisely, the axis D lies on a radius of the movement which forms an angle β to the Y-axis, which is so dimensioned that cos β = a / 2 (d + e). On the 5 it can be seen that this angle is advantageously zero.

Finally, it should be noted that the axis B of the balance 40 is arranged in the quadrant, which is formed by the radii at nine o'clock and at six o'clock, on which the two additional axes E and F lie.

It will now be on the 7 and 8th Reference is made, which represent a second interpretation of the inventive movement, with a small second hand at nine o'clock, it should be noted that the 8th a sectional view of the 7 according to the section line VIII-VIII, and these two figures and the 5 and 6 common elements are identified by the same reference numbers.

In this case, the two camps, which determine axis E, serve 34 as a pivot bearing for a wheel 50 , which engages with the center wheel 42 stands and the same module and the same number of teeth as the Zentralsekundenradtrieb 44 has, being this and the wheel 50 in the same direction and at the same speed.

On the wave 50a of the wheel 50 sits on the dial side a pin 50b on which the small second hand 20 ( 2 ) is pressed. Of course, the interpretation of the 5 and 6 corresponding central second hand 18 as well as the pin 44b of the minute wheel 44 away.

This is shown by simply inserting the wheel 50 in the camps 34 the axis E was a change of the base work was enabled to to equip this with a small second hand at nine o'clock.

The 9 uDN 10 represent a third interpretation of the movement according to the invention, with a small second hand at six o'clock, it being noted that the 10 a sectional view of the 9 after the section line XX, and the elements common to these two figures as well as the preceding figures are identified by the same reference numbers.

In this case, serve the two, the axis F determining bearing 34 as a pivot bearing for a wheel 52 engaging with the escapement wheel drive 46 stands and with the central wheel 44 is identical, this and the wheel 52 in the same direction and at the same speed.

On the wave 52a of the wheel 52 sits on the dial side a pin 52b on which the small second hand 22 ( 3 ) is pressed. Naturally, the central second hand was used 18 as well as the pin 44b the interpretation of 5 and 6 away.

This is shown by simply inserting the wheel 52 in the camps 34 the axis F was a change of the base work has been made to equip this with a small second hand at six o'clock.

The 11 and 12 are a timepiece equipped with a chronograph mechanism that allows timekeeping in seconds, minutes and hours, using this information as shown on the 4 shown by the hands 24 respectively. 26 respectively. 28 are displayed. Note that the 12 a sectional view of the 11 according to the section line XII-XII.

The chronograph mechanism is on the in the 7 and 8th shown, ie with a small seconds display at nine o'clock, and therefore includes, on the axis E, a wheel 54 , which engages with the center wheel 42 stands and the same features as the wheel 50 of the 7 and 8th Has. On the wave 54a of the wheel 54 sits on the dial side a pin 54b on which the small second hand 20 is pressed on. That the pin 54b opposite end of the shaft 54a is by a pin 54c whose function will be further described in the text.

The chronograph mechanism essentially comprises a transmission and a switching device for triggering, stopping and resetting its three hands 24 . 26 and 28 to ensure.

The chronograph gearbox is essentially on the bridges, and in particular on a three-quarter bridge 56 and on a balance cock 58 built, being a drive wheel 60 , a clutch wheel 62 , a chronograph second wheel 64 , a first idler 66 , a chronograph minute wheel 68 , two counter gears 70a and 70b , a second idler 72 and a chronograph hour wheel 74 includes.

The drive wheel 60 is on the cones 54c pressed on the axis E, so constantly turns with the wheel 54 ie at a rate of one turn per minute with. The chronograph second wheel 64 turns around the center axis C.

The chronograph minute wheel 68 revolves around an axis G, not yet mentioned, which lies at three o'clock in a distance a corresponding to the axial distance between C and E on the X-axis. The chronograph hour wheel 74 , finally, turns around the axis F.

One with a bridge 78 provided rocker 76 is rotatable on the balance cock 58 stored and is axially by means of an eccentric 80 recorded. The coupling module 62 is rotatable between the rocker 76 and the bridge 78 stored and is in constant engagement with the drive wheel 60 ,

The one by the position of the eccentric 80 certain pivot point of the rocker 76 is chosen so that the distance change between the wheels 60 and 62 as small as possible, while still switching on and off the connection between the clutch wheel 62 and the chronograph second wheel 64 allowed. Each of the three wheels 62 . 64 and 66 has a triangular tooth profile whose modulus is the same at the first and second, or at the third of a multiple subdivision, so that a precise starting the timing and a secure engagement between the two first wheels is guaranteed despite the variable center distance.

The rotating about the central axis C and by the coupling wheel 62 driven chronograph second wheel 64 includes a wave 64a , at the zifterblattseitigem end for recording the large chronograph second hand 24 certain cones 64b is trained. On the bike 64 , which also engages with the first idler 66 standing shoot 64c includes, sits a heart-shaped cam 82 , with which the zero position of the chronograph second hand 24 can be guaranteed at the end of a timekeeping. It turns out that the wheel 64 coaxial with the central second wheel 44 is stored. Since the latter between the wheel 64 and the dial is embedded, it must be one of the shaft 64a of the wheel 64 pierced hollow shaft 44a include.

The first idler 66 includes a wheel 66a and a wave 66b that with a the minute wheel 68 driving impulse 66c is provided.

One on the bridge 56 fortified (only on the 12 apparent) bridge 84 ensures the rotation of the wheels 64 . 66 and 68 on the side opposite the dial, with the wheel 66 also in the bridge 56 and the wheel 68 in the work plate 30 is pivotally mounted.

The chronograph minute wheel revolving around the G axis 68 includes one with the shoot 66c engaged wheel 68a and one with a shoot 68c provided shaft 68b , at the dial-side end, for recording the chronograph minute hand 26 certain cones 68d is trained. On the wave 68b also sits a heart-shaped cam 86 ,

The second idler 72 is with the shoot 68c kinematically via the two counter gears 70a and 70b connected and includes one with the counter gear 70b engaged wheel 72a and a wave 72b that with a shoot 72c which is the chronograph hour wheel 74 drives. The latter, which rotates about the axis F, comprises a wheel 74a and a wave 74b , at whose dial-side end one for receiving the chronograph hour hand 28 certain cones 74c is trained. On the wave 74b also sits a heart-shaped cam 87 ,

It must be made clear that the wheel 74a necessarily a smaller diameter than the wheel 52a must, so it does not interfere with the Hemmungsradtrieb 46 can come.

The switching device of the chronograph mechanism includes, in addition to the rocker 76 like on the 11 seen, a shift lever 88 , a column wheel 90 , a locking lever 92 , a hammer 94 and a spring 96 which cooperate in a conventional manner and are not described in more detail, they do not belong to the invention.

It is merely emphasized that an operation of the on 4 At two o'clock, the pusher can be engaged or disengaged by the movement of the rocker 76 , or an operation of the pusher at four o'clock, the zero position of the chronograph hand, and only effected when the transmission is disengaged. This zeroing is done by the action of the hammer 94 on the heart-shaped cams 82 . 86 and 87 ,

In conventional Fashion includes the chronograph gearbox on some of its Wheels friction clutches, the independent one Allow zeroing of each pointer. These are well known to those skilled in the art Friction clutches are not described in detail.

This is, starting from the base work, the optional seconds from the middle ( 5 and 6 ), at nine o'clock ( 7 et 8th ) or at six o'clock ( 9 and 10 ), a chronograph clock is implemented which displays the current seconds value at nine o'clock, the measured second value in the center, the measured minute value at three o'clock and the measured hour value at six o'clock.

Claims (15)

A mechanical movement comprising a skeletonized bearing, an elevating and indexing shaft, a balance, and rotating parts, respectively, having center, central seconds and escapement wheel rotating parts, said balance and said rotating parts in said bearings being normal rotate to the skeleton plane extending axes and each comprise a wheel and a drive, characterized in that the skeleton comprises further features, namely: - a first bearing pair, which determines a first eccentric additional rotation axis (E), which is arranged so that the axis of the intermediate wheel turning part (A) is equidistant from it and to the axis of the central second wheel turning part (C), and - a second bearing pair defining a second eccentric auxiliary rotation axis (F) arranged such that the Axle of the escapement wheel rotating part (D) equidistant from it and to the axis of the Zentralsekundenrad-rotating part (C) is located. Clockwork according to claim 1, characterized that: - of the Middle wheel turned part is driven by its drive, - the shoot of the central second wheel turning part with the wheel of said middle wheel turning part is engaged, - of the Traction of the escapement wheel turning part with the wheel of said central second wheel turning part is engaged. Clockwork according to claim 2, characterized that the two additional axes (E, F) are pretty much the same distance to the axis of the central second rotary part (C) lie. Clockwork according to claim 3, characterized that the two additional axes (E, F) are on two of its radii located at right angles to each other at nine and six o'clock respectively lie. Clockwork according to claim 4, characterized in that the distance between the two axles (E, F) to the central second axis is almost exactly half its radius. Clockwork according to one of the claims 3 to 5, characterized in that the center distance of the middle wheel rotary part (A) to the first additional axis (E) and the central second rotary part (C), the sum of the radius (b) of the wheel of the middle wheel turning part and the radius' (c) of the drive of the central second turning part equivalent. Clockwork according to one of the claims 3 to 6, characterized in that the axial distance of the inhibited rotary part (A) to the second additional axis (F) and the central second rotary part (C), the sum of the radius' (d) of the wheel of the central second rotation part and the radius' (e) of the shoot of the Escapement rotary part corresponds. Clockwork according to claim 4, characterized that the axis of said balance (B) is located within the quadrant which is formed by the radii lying at nine and six o'clock is, on which the two additional axes (E, F) are respectively. Clockwork according to one of the claims 2 to 8, characterized in that on the axle shaft of the central second rotary member a second hand sits. Clockwork according to one of the claims 2 to 8, characterized in that it is engaged at nine o'clock standing with the wheel of the middle wheel turning part to the first additional axis (E) rotating and identical to the drive of the central second rotary part Second drive, and that on this second drive a smaller Second hand sits. Clockwork according to one of the claims 2 to 8, characterized in that this at six o'clock engaged standing with the shoot of the escapement wheel turning part to the second Additional axle (F) rotating and with the wheel of the central second rotary part identical second wheel covers, and that on the axle shaft this Second wheel sits a small second hand. Clockwork according to one of the claims 3 to 8, characterized in that the frame is a third pair of bearings includes a third off-center Additional rotary axis (G) includes, which on his at three o'clock located radius almost exactly the same center distance to the central second rotary part (C) as the other two additional axes (E, F) is arranged. Clockwork according to claim 12, characterized that at nine o'clock one engaged with the wheel of the middle wheel turning part standing, about the first additional axis (E) rotating and with the drive the central second rotary part identical second drive and a Chronograph train wheel which, in turn, secures one coaxially with the said shoot connected drive rotary member, coaxial with the central second rotary member connected Chronographensekunden turn part, one to the third Additional axis (G) rotating chronograph minute-rotation part and one about the second additional axis (F) comprises rotating chronograph hours turned part. Clockwork according to claim 13, characterized that: - on the chronograph second turn part has a big second hand, - on the A minute minute hand sits, and - on the Chronograph Hours Turned Part A small hour hand sits. Clockwork according to claim 14, characterized that at the said second drive at nine o'clock a small second hand sitting.