Classifications

• • 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
  • G04B19/00—Indicating the time by visual means
  • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
  • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
  • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
  • G04B19/25—Devices for setting the date indicators manually
• • 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
  • G04B27/02—Mechanical devices for setting the time indicating means by making use of the winding means
  • G04B27/04—Mechanical devices for setting the time indicating means by making use of the winding means with clutch wheel

Definitions

• the present invention relates to a device for adjusting a time indicator comprising a gear train whose kinematic chain comprises a sliding pinion driven by a mobile driving this sliding pinion driving a mobile driven when the driving mobile rotates in a first direction and disconnecting from said driven mobile when said driving mobile rotates in a second direction, opposite to the first, to interrupt said kinematic chain.
• Such a device equips a watch displaying both the date and the day of the week.
• the date and day of the week are set using a rod crowned with a crown.
• you pull the stem to a first position and turn the crown in a first direction you correct the date.
• the day of the week is corrected by turning the crown in a second direction, opposite to the first.
• the device described above gives complete satisfaction for the functions mentioned, it has a major drawback if it is a question of implementing it in a watch comprising for example a date and a timer, the latter allowing counting down. and displaying on a dial a predetermined time interval. Indeed, by going from setting the date to the date to setting the desired time of the timer, or vice-versa, the time displayed by the timer is disturbed or adjusted, this disturbance being caused by the sliding pinion which is not not introduced or removed from the mobile it drives in an appropriate direction.
• the device of the invention in addition to satisfying what is described in the first paragraph above, is original and remarkable in that the shaft which comprises the sliding pinion is engaged in a groove having first and second final portions, at least the first final portion of this groove being directed radially to the mobile driven by the sliding pinion.
• FIG. 1 is a plan view of the timepiece containing the invention
• Figure 2 is a plan view of the adjustment device according to the invention, this device showing a sliding pinion engaged in a kinematic chain
• Figure 3 is a plan view of the adjustment device according to the invention, this device showing a sliding pinion disconnected from a kinematic chain
• Figure 4 is an enlargement of Figure 2 in which were kept only the elements suitable for understanding the invention
• Figure 5 is a section of the adjustment device according to the invention.
• Figure 1 is a plan view of the timepiece 10 containing the invention.
• This piece includes timepiece hands, namely an hour hand 30, a minute hand 31 and a small second hand 32.
• a calendar with large aperture 33 completes the timepiece.
• the timepiece taken here as an example also includes a chronograph function with a second hand 34 and a minute counter 11.
• the starting and stopping of the hand 34 and of the counter 11 are carried out by means of a first pusher 35, while a second pusher 36 allows the indicators 34 and 11 to be reset to zero.
• a crown 37 allows, according to the axial positions to which it is brought, to wind the timepiece, to set the calendar to day and set the time hands.
• the minute counter 11 is also used as a timer or countdown counter 11, the setting of the period to be counted down being entrusted to the crown 37.
• the starting of the timer and the winding of 'a ringing barrel activating a ringing indicating the end of the countdown are carried out by pressing on a third pusher 38.
• the timer counter 11 comprises a dial 13 containing three concentric scales of ten minutes each and each traversed by a needle of different width 19, 20 and 21.
• the device for adjusting a time indicator - here the timer 11 - comprises a gear train 1, the kinematic chain of which comprises a sliding pinion 2 driven by a driving mobile 3.
• the sliding pinion drives a driven mobile 4 when the driving mobile 3 rotates in a first direction A.
• FIG. 2 shows that when the driving mobile 3 rotates in a second direction B, opposite to the first , the sliding pinion 2 disconnects from the driven mobile 4.
• the kinematic chain is then interrupted.
• the sliding pinion 2 comprises a shaft 6 engaged in a groove 7 made for example in the plate or in a bridge of the timepiece.
• This groove 7 has first and second final portions 9 and 12, the invention residing in the fact that at least the first final portion 9 of the groove 7 is directed radially (reference R) to the driven mobile 4.
• FIG. 4 makes it clear that when the sliding pinion 2 engages or disengages from the driven mobile 4, it is forced to follow the first portion 9 of the groove 7, this portion being directed towards the center of the driven mobile 4. Thus , leaving the teeth 14 of the driven mobile 4, the sliding pinion 2 does not change the angular position of said driven mobile and therefore does not disturb the time value introduced in the timer 11 which is at the end of the kinematic chain. Examination of FIG. 4 will also make it clear that the width of the first final portion 9 of the groove 7 or, in other words, the length L of the path traveled by the shaft 6 of the player 2 in said first final portion 9 must be substantially greater than the height h of the teeth 14 of the driven mobile 4, this to allow the sliding pinion to disengage completely from said driven mobile.
• the time indicator considered here is a timer 11 allowing the countdown to countdown and the display on a dial 13 of a predetermined time interval.
• the figures show that the device for adjusting this timer comprises a rod 15 capped by a crown 37 which can be actuated manually, an assembly formed by a sliding pinion 16, a pull tab 7 and a rocker 18 linked to the rod. 15, and a gear train 1 leading to said timer consisting of the minute wheel 8.
• the gear train 1 is capable of being driven by the sliding pinion 16 when the rod 15 is pulled in a determined axial position ( in this example: first position pulled).
• Figures 2 and 3 show the mechanism related to the rod 15.
• the pull tab 17 which pivots at 40.
• the first end of the pull tab is engaged by a pin 42 in a groove 41 of the rod 15.
• the second end of the pull tab controls the rocker 18, itself engaged in a groove 43 of the sliding pinion 16.
• the position of the pull tab 17 is ensured by a jumper spring 44.
• the mechanism is completed by a second rocker 45 which is controlled by the pull tab 17 and pivots at 46, this second rocker 46 carrying the driving mobile 3.
• FIGS. 2 and 3 show which elements are made up of the gear train 1.
• the sliding pinion 16 drives the driving pinion 3 which in turn drives the sliding pinion 2.
• the sliding pinion 2 drives the driven mobile 4 which is composed, as can be seen in FIG. 5, of two wheels 47 and 48 mounted coaxially and integral with one another. Wheel 48 meshes with a mounted wheel 49 integral and coaxial with a wheel 50 which ultimately drives the minute wheel 8 which constitutes the timer 11.
• the driven mobile 4 comprises a wheel 47 meshing with the sliding pinion 2 (see particularly FIG. 4).
• the timepiece taken here as an example, it can be seen that two teeth 14 of the wheel 47 are embraced by a single space between the teeth of the sliding pinion 2 and that the teeth 14 of the wheel 47 have a particular profile.
• This arrangement allows a smooth introduction of the sliding pinion 2 into the wheel 47. It will also be understood that this particular profile avoids the arqueboutement of the teeth 14 on the teeth of the sliding pinion 2 when the latter enters the wheel 47.
• the sliding pinion 2 engages with the driven mobile 4 and more precisely the wheel 47 of this mobile 4.
• the shaft 6 of the sliding pinion 2 is then positioned at the bottom of the first portion 9 of the groove 7 in which it s is moved. From this moment, and if the crown 37 is continued to rotate in the same direction E, the minute wheel 8 of the timer 11 is driven in the direction of the arrow M, which makes it possible to choose the desired time interval.
• the pusher 38 is pressed (see FIG. 1) to simultaneously arm a barrel which will sound a bell at the end of the countdown.
• FIGS. 2, 3 and 4 show that the lever 18 carries or is extended by a hook 22. This hook is capable of rapidly driving the shaft 6 of the sliding pinion 2 at the bottom of the second final portion 12 of the groove 7. In fact, when the rod 15 is pushed into a position allowing the timepiece to be reassembled, the sliding pinion 16 moves in the direction of the arrow G shown in FIG.

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• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Measurement Of Predetermined Time Intervals (AREA)
• Electromechanical Clocks (AREA)

Applications Claiming Priority (1)

Publications (2)

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ID=8164353

Family Applications (1)

Country Status (4)

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Family Cites Families (10)

• 2001
  • 2001-03-21 JP JP2002575715A patent/JP2004534211A/ja active Pending
  • 2001-03-21 EP EP01927810A patent/EP1373988B1/de not_active Expired - Lifetime
  • 2001-03-21 WO PCT/EP2001/003435 patent/WO2002077721A1/fr active Application Filing
  • 2001-03-21 US US10/472,470 patent/US7134783B2/en not_active Expired - Lifetime

Non-Patent Citations (1)

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