EP0147757A1 - Zeigerwerk mit mechanischer Vorrichtung zur Verstellung der Uhrzeiger nach Halbstundschritten sowie zur Sekundenzeigerkorrektur - Google Patents

Zeigerwerk mit mechanischer Vorrichtung zur Verstellung der Uhrzeiger nach Halbstundschritten sowie zur Sekundenzeigerkorrektur Download PDF

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Publication number
EP0147757A1
EP0147757A1 EP84115545A EP84115545A EP0147757A1 EP 0147757 A1 EP0147757 A1 EP 0147757A1 EP 84115545 A EP84115545 A EP 84115545A EP 84115545 A EP84115545 A EP 84115545A EP 0147757 A1 EP0147757 A1 EP 0147757A1
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EP
European Patent Office
Prior art keywords
wheel
drive
minute
crown
pointer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP84115545A
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German (de)
English (en)
French (fr)
Inventor
Franz Gander
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Individual
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Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of EP0147757A1 publication Critical patent/EP0147757A1/de
Withdrawn legal-status Critical Current

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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/005—Mechanical devices for setting the time indicating means stepwise or on determined values

Definitions

  • the invention relates to a pointer mechanism as described in the preamble of the first claim.
  • this pointer movement can be described as rational because it only requires two adjustment stages and with only a single hand adjusting wheel can carry out both types of adjustment, which can be carried out in stages like the stepless one.
  • a technical problem is the weak driving force of the rotor, which offers too little resistance to the coupling means during the step-by-step pointer adjustment.
  • the differential gear shown in CH 617 815 cannot be used in my project CH 6151 / 82-4 without giving up the advantage of the rational structure.
  • Another problem is the gear wheel play, which must therefore be taken into account, since the minute wheel is arranged on the axis of the hand setting wheel, not on that of the minute wheel. The position of the minute hand can therefore lose precision.
  • the correction of the second hand and with it the inevitable coordination of second and minute hands makes sense with the introduction of the half-hour step. Because with a stepless pointer adjustment, which also includes the second hand, you only need a maximum of 15 forward or 15 reverse rotations to find the correct pointer position in the range of half an hour. The remaining large time differences can be skipped in half-hour increments. Since with super-precise watches, the stepless hand adjustment after the start is practically never required, but at most only a slight correction of the second hand, after the introduction of the half-hour step, it is worth including the second hand in the stepless adjustment.
  • the object of the invention is to complete the project CH 6151 / 82-4 in such a way that if the rational means shown therein are followed during the step-by-step pointer adjustment, there is no recoil effect on the rotor, that the gear wheel play is reduced, and the doubling of the crown disappears and the second hand can be corrected with continuous adjustment.
  • the wheel 3 has the plates 3.5 & 6 in the space between the two spokes 3.1 & 2. In itself, there should only be one spoke, there could also be several. Two are sensible from the point of view of stability and the time required for the pointer adjustment.
  • the plates 3.5 & 6 do not completely fill the space between the spokes 3.1 & 3. They leave at least as much space as is required for turning the minute wheel 3 further during the gradual pointer adjustment.
  • the thickness of the plates 3.5 & 6 is composed at least of the spoke thickness plus the distance by which the spoke 3.1 is removed from the shell 8. They can also be a little thicker.
  • the spokes 3.1 & 2 there are eyelets 3.11 / 3.21, also at the peripheral ends of the plates 3.51 & 61 opposite the spoke.
  • eyelets 3.51 / 3.11 & 3.61 / 3.21 there is a spring rod 3.3 for each connection between the spoke and plate & 4 placed.
  • the spring rod 3.3 & 4 can be fastened in one of the eyelets, whereas it can slide through the other.
  • the attachment to the spoke or to the plate can also be done without eyelets by direct welding.
  • the device shown would in itself be sufficient to function.
  • the plates 3.5 & 6 between the spokes 3.1 & 2 are connected to one another by a further plate 3.7 bridging the spokes.
  • the second half 4.2 of the adjustment wheel rests on the plates 3.5-7. This is caused to rotate with the plates 3.5-7 due to the frictional resistance.
  • the plates 3.5-7 receive the rotary movement from the minute wheel 3 via the spring bars 3.3 & 4.
  • the plates 3.5-7 can be pressed against the raw structure 8. While you get up there, the minute wheel 3 can continue to turn.
  • the spring rod 3.3 is attached to the spoke 3.1 near the center, it provides extremely little resistance to the rotary movement of the minute wheel 3. The resistance increases somewhat with increasing time, which is required for the adjustment. However, this resistance can be reduced by the fact that the spring rod 3.3 & 4 opposes lateral deformation significantly less force than the deformation when pressure is exerted on the plates 3.5-7.
  • the eyelet 3.51 can be used & 61 magnetize the plate so lightly that it spoke 3.1 & 2 is tightened. The spoke and plate are held together during normal traction. When pressed on the plate, the magnetized eyelet 3.51 & 61 is moved outside the area of attraction of the spoke 3.1 & 2 and provides minimal or practically no resistance to the rotation of the minute wheel.
  • Fig. 4 shows a device for increasing the precision during the course of the pointer adjustment in a two-part adjustment wheel, which uses springs as a coupling means.
  • One wheel half 4.1 has a hollow cylinder which has two openings for rollers 4.11, or balls, which are shifted by 180 ° and can be pushed back and forth therein. Using spring leaves 4, 12, they are pressed against the center, the axis of rotation.
  • the other wheel half 4.2 has two depressions or grooves 4.23 for receiving the Rolls 4.11.
  • the surface 4.22 between the grooves 4.23 describe a concave parabolic shape with respect to the plane of symmetry, which is rotated through 90 ° with respect to the plane of symmetry of the grooves 4.23. This means that during the gradual pointer adjustment, the resistance to the adjustment movement increases in a first phase, whereas the second phase takes place automatically thanks to spring pressure.
  • Fig. 3 shows how the pressure is applied to the plates 3.5-7 of the minute wheel 3.
  • the slide 7 does not have the task of raising the second half 4.2 of the adjustment wheel 4.1-2, but rather of lowering it. Accordingly, the end 7.1 of the slide 7, which is located in the region of the axis of rotation 4.21, is somewhat higher than the slide 7 and the required inclined surface is seen from the crown 9.7 beyond the axis of rotation 4.21 / 8.1, over which the slide 7 runs.
  • the second wheel half 4.2 of the adjustment wheel 4.1-2 is held at a height without pressure on its axis of rotation 4.21, at which there is sufficient frictional resistance to the minute wheel 3 in order to ensure traction.
  • the slide 7 has another special feature with respect to the slide known from CH 6151 / 82-4. While in the earlier project the slide 7 was only pulled when the switch was made to stepless adjustment, it is already being pulled 7 here to actuate the stepped adjustment, whereas in the case of the stepless adjustment it returns to its normal position. This reversal of its operational effect has the important advantage that it is not necessary to double the crown, as provided for in CH 6151 / 82-4 as a variant.
  • the setting wheel drive 9.1 is not a sliding drive. It also rotates on a shaft section 9.2, which ends at the disk 9.2. This disc 9.2 is bridged by the body part 9.4, a hollow cylinder.
  • the spring rod 8.4 anchored in the raw work 8 can hold this hollow cylinder in its two functional positions thanks to its grooves 9.41.
  • the shaft section 9.6 connected to the crown 9.7 is now not directly connected to this hollow cylinder 9.4, but is coupled in a manner which allows the actuating shaft 9.6 to move away temporarily in the direction of the crown 9.7.
  • a disk 9.5 is fastened to the actuating shaft 9.6 and is held at a constant equidistant distance from the hollow cylinder 9.4 by a pressure generated by known means, provided that no force counteracting this pressure is exerted on it by means of the crown 9.7 and actuating shaft 9.6.
  • this pressure is generated in that the hollow cylinder 9.4 and disc 9.5 attract due to a magnetic effect. Both are pressed against each other so much that due to the frictional resistance, the hollow cylinder with the disk 9.5 and the crown 9.7 can be rotated.
  • This pressure can also be generated by a spring, e.g. can be exerted by a spiral spring between hollow cylinder 9.4 and disc 9.5.
  • the slider 7 is latched with its end 7.2 close to the crown 9.7 over the disk 9.5.
  • the notch is designed so that when pressure is exerted on the disk 9.5, by means of which it is temporarily pulled 9.5 away from the constantly identical position with respect to the hollow cylinder 9.4, the slide 7 disengages. So that the notch over the disk 9.5 is strong enough and the notch occurs safely, an inclined surface 8.7 can be attached in the area of the rawwork 8, thanks to which the slide disengages. For reasons of drawing, the inclined surface 8.7 suggests that the slide 7 is raised in order to release it. So that the work does not become too high, it is recommended a lateral notching of the slide 7, or an analogous change of position of the inclined surface 8.7.
  • the spring rod 8.5 moves the notched slide 7 back to its original position, whereas the crown 9.7 returns to the position in which it rotates the adjusting wheel drive 9.1 by means of hollow cylinder 9.4 can It is not necessary in itself to provide a special spring rod 8.5 in order to allow the slide 7 to snap back. Because the plates 3.5-7 are when the slide 7 is pulled out under. Spring pressure and should bring back the same 7 by itself over the crest 4.21 and the inclined surface at the other end 7.1 of the slide 7. Thanks to the spring bar 8.5, however, the spring bars 3.3 & 4 attached in the minute wheel 3 can be somewhat less strong, as a result of which the minimum resistance generated by them is further reduced to the rotating minute wheel 3.
  • the size of the adjusting wheel drive 9.1 is not entirely insignificant. 3.5 and 6 it is assumed that the adjusting wheel drive 9.1 is only 1/4 as large as the associated setting wheel 4. With this assumption, a rotation of the setting wheel drive 9.1, or respectively of the crown 9.7, causes a 1/4 rotation of the setting wheel 4. This is due to the design of the setting wheel half 4.2 shown in FIG. 4 , which has the grooves 4.23, makes sense.
  • the crown 9.7 or respectively the setting wheel drive 9.1, the setting wheel 4 and the hands 5.2 / 6.2 themselves run by 1/4 turn (pointer and setting wheel) , repectively a full turn (adjusting wheel drive and crown).
  • the crown 9.7 can be temporarily pulled out by the width b. Thanks to the inclined surface 8.7 or an analog device, the slide 7 is released and returns to its original position solely due to the action of the spring bars 8.5 and 3.3 & 4, whereas the crown 9.7 due to the pressure according to which the washer 9.5 and the body part 9.4 in be held in the same position to each other, is withdrawn into the rotational position. Now you can turn continuously, since the frictional resistance between the second half of the adjusting wheel 4.2 and the plates 3.5-7 is lower than the resistance of the spring blades 4.12 against the notching of the rollers 4.11.
  • This temporary pulling out of the crown 9.7 by the width b has notable advantages: it replaces the double crown, no additional crown position, which confuses the user, is necessary, and there is also no need to introduce an often existing pusher.
  • the same crown can carry out both the step-by-step and the stepless pointer adjustment in the same position, and it can take on the function of a pusher. It is rational (no increase in parts) and not confusing (no increase in crown positions).
  • FIGS. 5-6 show a pointer mechanism according to the invention.
  • CH 6151 / 82-4 arranges the minute wheel 3rd on the axis of the hand setting wheel and with it on the axis of the two-part adjustment wheel, one half of which coincides with the hand setting wheel.
  • the devices for the minute wheel and the actuation of the crown described in the above explanations can be used in the CH 6151 / 82-4 hands.
  • the gear play is important in such a pointer mechanism. Since the minute wheel is not located on the axis of the hands, there is a risk that the position of the minute hand will lose precision.
  • the gear wheel play is the result of the reduction of the infinite number of points of a circular periphery to a finite, namely to the finite number of teeth. The fewer teeth a circular periphery has, the greater the space between the usable points or the gear wheel play.
  • a logical measure to reduce the gear wheel play is therefore the increase in teeth, and an increase in teeth requires larger wheels.
  • the gear play can be reduced in this area. Since there is no Vechsel wheel, the drive 4.3, which drives the hour wheel 6, is arranged on the axis of the pointer setting wheel 4 and fastened to this 4. It is 12 times smaller than the hour wheel 6. In order to gain a different size ratio of the hour wheel drive, the minute drive 5 or the adjusting wheel 4 could be combed by an actual Vechselrad, which would be equipped with a change drive in the usual way, which, however, as long as the hour wheel is pretty big, nothing brings in.
  • Fig. 6 shows another important precaution.
  • Half 3.8 of the setting wheel 4 which according to the illustrations in CH 6151 / 82-4 stands on the minute wheel 3, respectively on the plates 3.4-7 shown here, and is made to rotate by frictional resistance, is here assembled with plates 3.5-7 of minute wheel 3.
  • Half 3.8 can not be rotated independently of the plates 3.5-7 and the minute wheel 3 with the stepless pointer adjustment.
  • the connection is arranged by frictional resistance between the second wheel 1.0 and the second drive 1.
  • the second wheel 1.0 and the second drive 1 stand against each other via the surfaces 1.3 and 1.4.
  • Whether the rotor should be switched off during the stepless adjustment or whether it may continue to run is a matter of judgment with the correction option of the second hand 1.2, in which various aspects are taken into account. If you turn off the rotor, you may do without the friction clutch between the second drive 1 and the second wheel 1.0. Either way, it may be advantageous for fine adjustment to give the second hand several pulses per second, e.g. at 32 kHz 4 or 8. As a result, the electronic module required two or three dividers less.
  • FIG. 5 Another measure is to be observed in FIG. 5 in connection with the adjusting wheel drive 91.1.
  • the adjusting gear 91.1 is not directly on the axis of the adjusting shaft.
  • the further drive 91.3 is arranged on the adjusting shaft and laterally combs the actual adjusting wheel drive 91.1.
  • the introduction of this second drive 91.3 initially makes sense to reverse the direction of rotation of the actuator 91.1. If the adjusting shaft were arranged on the axis of the actuator 91.1, the hands would move clockwise and counterclockwise when the crown 91.7 was turned, which would be unusual for the user. In addition to this practical sense, the introduction of this second drive 91.3 opens up significant rationalization moments to the structure of the adjustment mechanism.
  • the second drive 91.3 is freely supported on the actuating shaft 91.6.
  • the two spring rods 81.2 anchored in the unfinished work 81 - it could also be a spiral spring which would be arranged between the drive 91.3 and the housing - hold this drive 91.3 in the correct position, but allow the drive 91.3 to be temporarily moved away by the width b for release the slide.
  • a disk 91.4 is fastened to the shaft 91.6 at a distance by which the crown 91.7 can be pulled out (a) in order to get into the inserted position. If the crown is pulled out by the width a, the drive 91.3 can be rotated together with the disk 91.4 due to the frictional resistance.
  • the disk 91.4 and the drive 91.3 can be magnetized so easily that they attract each other. Positioning by means of springs would be conceivable, but is not shown here.
  • the actuating shaft 91.6 is finally continued and completed by a spherical or egg-shaped extension 91.5.
  • This extension 91.5 is a feather pliers-shaped body part 71.2 latched. It belongs to the slide valve 71 (not shown), with which it is assembled. So that these spring pliers 71.2 really disengage when the crown 91.7 is temporarily pulled out by the width b, a body shape is advantageously provided in the area of the shell 81, which prevents the slide 71 from moving further by the width b.
  • the second drive 91.3 meshes a second gear rim 91.2 of the actuating wheel drive 91.1. Since its radius is smaller than that of the adjusting wheel drive 91.1 and of the second drive 91.3, a translation effect occurs. With this precaution one can by an adjusting gear 91.1 which, for example. is only 1/6 as large as the setting wheel 4 with a complete rotation of the crown 91.7 can reach a quarter turn of the setting wheel 4 if the second ring gear 91.2 of the setting wheel drive 91.1 is two thirds of the second drive 91.3. You can achieve an effect described in Fig. 3 with a smaller actuator, which means that the movement can be somewhat flatter.
  • CH 6151 / 82-4 is supplemented valuable.
  • the recoil effect on the minute wheel 3, or rather the drive, during the gradual adjustment is deflected onto the bodyshell 8.
  • the doubling of the crown 9.7 disappears.
  • the gear play can be reduced thanks to large wheels and the direct engagement of the adjusting wheel in a large minute drive.
  • the CH 6151 / 82-4 project's own advantage of rational construction is not diminished.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)
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EP84115545A 1983-12-24 1984-12-15 Zeigerwerk mit mechanischer Vorrichtung zur Verstellung der Uhrzeiger nach Halbstundschritten sowie zur Sekundenzeigerkorrektur Withdrawn EP0147757A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH6871/83 1983-12-24
CH687183A CH651997GA3 (ja) 1983-12-24 1983-12-24

Publications (1)

Publication Number Publication Date
EP0147757A1 true EP0147757A1 (de) 1985-07-10

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EP84115545A Withdrawn EP0147757A1 (de) 1983-12-24 1984-12-15 Zeigerwerk mit mechanischer Vorrichtung zur Verstellung der Uhrzeiger nach Halbstundschritten sowie zur Sekundenzeigerkorrektur

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EP (1) EP0147757A1 (ja)
JP (1) JPS60157069A (ja)
CH (1) CH651997GA3 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0570856A1 (fr) * 1992-05-21 1993-11-24 Compagnie des Montres Longines, Francillon S.A. Pièce d'horlogerie dont l'affichage des heures peut être modifié de façon indépendante, notamment lors du passage sur un autre fuseau horaire
US10617582B2 (en) 2008-06-27 2020-04-14 Kreg Medical, Inc. Bed with modified foot deck

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7029327B2 (ja) * 2018-03-20 2022-03-03 シチズン時計株式会社 携帯型電子機器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH301862A (fr) * 1952-10-09 1954-09-30 Montres Perret Et Berthoud Sa Mécanisme de seconde sautante.
FR2307301A1 (fr) * 1975-04-10 1976-11-05 Ebauches Sa Piece d'horlogerie comprenant un organe indicateur des heures actionnable manuellement independamment de l'organe indicateur des minutes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH301862A (fr) * 1952-10-09 1954-09-30 Montres Perret Et Berthoud Sa Mécanisme de seconde sautante.
FR2307301A1 (fr) * 1975-04-10 1976-11-05 Ebauches Sa Piece d'horlogerie comprenant un organe indicateur des heures actionnable manuellement independamment de l'organe indicateur des minutes

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0570856A1 (fr) * 1992-05-21 1993-11-24 Compagnie des Montres Longines, Francillon S.A. Pièce d'horlogerie dont l'affichage des heures peut être modifié de façon indépendante, notamment lors du passage sur un autre fuseau horaire
CH683055GA3 (fr) * 1992-05-21 1994-01-14 Longines Montres Comp D Pièce d'horlogerie dont l'affichage des heures peut être modifié de façon indépendante, notamment lors du passage sur un autre fuseau horaire.
US5285427A (en) * 1992-05-21 1994-02-08 Compagnie Des Montres Longines Timepiece in which the hours display may be independently modified, in particular when passing to another time zone
US10617582B2 (en) 2008-06-27 2020-04-14 Kreg Medical, Inc. Bed with modified foot deck

Also Published As

Publication number Publication date
JPH0246915B2 (ja) 1990-10-17
JPS60157069A (ja) 1985-08-17
CH651997GA3 (ja) 1985-10-31

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