EP0562155A1 - Chronographe - Google Patents

Chronographe Download PDF

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Publication number
EP0562155A1
EP0562155A1 EP92116171A EP92116171A EP0562155A1 EP 0562155 A1 EP0562155 A1 EP 0562155A1 EP 92116171 A EP92116171 A EP 92116171A EP 92116171 A EP92116171 A EP 92116171A EP 0562155 A1 EP0562155 A1 EP 0562155A1
Authority
EP
European Patent Office
Prior art keywords
switching
tooth
chronograph
double
chronograph according
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.)
Ceased
Application number
EP92116171A
Other languages
German (de)
English (en)
Inventor
Richard Habring
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
IWC International Watch Co AG
Original Assignee
IWC International Watch Co AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by IWC International Watch Co AG filed Critical IWC International Watch Co AG
Publication of EP0562155A1 publication Critical patent/EP0562155A1/fr
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04F—TIME-INTERVAL MEASURING
    • G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
    • G04F7/04—Apparatus for measuring unknown time intervals by non-electric means using a mechanical oscillator
    • G04F7/08—Watches or clocks with stop devices, e.g. chronograph

Definitions

  • the invention relates to a chronograph with a chronograph drive, by means of which a pointer shaft of a chronograph hand can be driven, with a double pointer shaft, coaxial with the pointer shaft, of a double hand that can be driven to overlap the chronograph hand, the pointer shaft and double hands being rotatably connectable to one another by means of a non-positive coupling a double pointer wheel arranged on the double pointer shaft, which can be gripped by the pliers arms of a double pointer pliers under spring preload and rotatably blocked by friction or positive locking, and with a rotatable switching element through which the pliers arms can be lifted off the double pointer wheel.
  • the blockage of the double pointer can be released again, for example, by pressing the double pointer button again.
  • the switching element is pivotable about an axis parallel to the double pointer shaft and has two cams which are arranged extending on opposite sides of the axis parallel to the axis and each rest on support surfaces on the inside of the gun arms, whereby the support surfaces consist of two mutually parallel spreading surfaces and adjoining sliding surfaces which move away in a ramp-like manner from the opposing pincer arm, the transitions from the sliding surfaces to the spreading surfaces forming switching edges, with tooth gaps of the switching disk separated from one another by a switching tooth and one which resiliently engages in the tooth gaps acted on latching tooth, which is movable by pivoting the switching element from one tooth gap over the switching tooth into the other tooth gap, whereby by manual pivoting of the switching element in a first pivoting direction, the cams can be moved along the spreading surfaces in the immediate vicinity of the switching edges and the latching tooth can be moved out of a first tooth gap beyond the tip of the switching tooth and the switching element can continue its pivoting movement by subsequently resiliently latching the latching tooth into the
  • This design means that only little installation space is required, which is particularly advantageous when used in a wristwatch.
  • the lifting movement of the locking tooth from its one tooth gap until it reaches the tip of the switching tooth means that the mechanism is pretensioned, while the rotary movement of the switching element is subsequently accelerated by the resilient engagement of the locking tooth in the other tooth gap. Since the cams get into the area of the ramp-like sliding surfaces and these bear against the cams with pretension, the acceleration of the rotary movement of the switching element is increased still further. The cams thus move at high speed into the area in which the tong arms do not spread. On the one hand, this leads to a quick gripping and rotation blocking of the double pointer wheel by the double pointer pliers.
  • the switching element consists of a switching tooth having the switching tooth and the tooth space and a spreading element, which are arranged pivotably about the common axis, the cams being arranged on the spreading element and each projecting with play between two stops of the switching disc and by pivoting the switching disc in If the first pivoting direction is in each case in contact with a first stop or by pivoting the switching disk in the second pivoting direction in each case at the second stop, the cams can slide along the sliding surfaces with the least possible resistance. This leads to a quick blocking movement of the gun arms.
  • the cams do not remain in the area of the switching edge, but instead move automatically along the spreading surfaces until they come to rest against the original stop.
  • the cam switching pins can be of cylindrical cross section. If the switching pins also consist of switching pins which are enclosed by switching sleeves rotatably mounted on them, this ease of movement is further increased.
  • the spreader element is a spreader disc that is mounted parallel to the switching disc on the axis and supports the cams, this results in a very flat and space-saving design.
  • a simple configuration of the components is achieved if the tooth gaps are formed on the radially circumferential outer surface of the switching disk.
  • the stops formed in the switching disc are larger cross-sections than the cross-section of the cams.
  • the switching disc can be pivotally driven by a manually operated pusher.
  • the switching disk can preferably be pivoted out of the respective rest position by means of a single pusher.
  • the pusher can have a rocker switch which can be pivoted about a pivot axis against a spring force from a rest position into a switching position and can also be moved manually against a spring force transversely to the axis against the switching disc.
  • the rocker switch moved from its rest position eccentrically to the axis of a switching area and, with its own pivoting about the pivot axis from its rest position, pivots the switching disk in such a way that after subsequent operation Moving the trigger rocker back to its rest position, which faces the other switching area of the switching disc ready for action, a reversible swivel drive of the switching disc is achieved with a single trigger using simple means.
  • the switching areas are formed on the circumferential outer surface of the switching disk.
  • the switching areas can each have recessed recesses in the pivoting direction, into which corresponding actuation teeth of the trigger rocker can be engaged.
  • this can be articulated on the free end of a trigger lever which can be pivoted with its other end about a trigger axis parallel to the axis.
  • the tong arms can be designed as spring arms in a simple manner in the end area opposite the contact area on the double pointer wheel.
  • the gun arms are connected to each other in the end area opposite the contact area on the double pointer wheel and are pivotable about a gun axis parallel to the axis, they can align themselves with the double pointer wheel in the closed state.
  • the movement of the gun arms in the direction of the double pointer wheel can be limited by stationary stops, the stops preferably being variably adjustable in the possible movement path of the gun arms. This is easily possible in that the stops can be rotated about a stop axis parallel to the stop axis are whose stop area which can be acted upon by the tongs arms is a stop eccentric.
  • the stops between the support surfaces and the engagement area can be arranged on the double pointer wheel of the gun arms.
  • stop bolts protrude with play through recesses formed in the switching disk contributes to a small space requirement.
  • a second embodiment consists in that the free ends of the gun arms protrude beyond their engagement area on the double pointer wheel and the stops are arranged in the area of the free ends of the gun arms.
  • the chronograph shown in the figures has a tubular pointer shaft 1 with a chronograph pointer 2, on which a chronocenter wheel 3 is fixedly arranged, which can be rotatably driven by a chronograph drive 4.
  • a second heart 5 for resetting the chronograph hand 2 to an initial position and a double-hand heart 6 of a non-positive clutch are furthermore arranged on the pointer shaft 1 in a rotationally fixed manner.
  • a double pointer shaft 7 with a double pointer 14 is rotatably mounted in the axially continuous bore of the tubular pointer shaft 1.
  • This double pointer shaft 7 rotatably supports a double pointer wheel 8, the radially circumferential surface 9 of which is provided with fine toothing or roughening.
  • a double pointer lever 10 In the radially outer region of the double pointer wheel, one end of a double pointer lever 10 is pivotably articulated about an axis 11 parallel to the pointer shaft 1. This double pointer lever 10 can be pivoted in the same plane in which the double pointer heart 6 is located. By a tension spring 12, the free end of the double pointer lever 10 with a coupling surface 13 in contact against the circumferential surface of the double pointer heart.
  • the double pointer lever 10 slides along the lateral surface of the double pointer heart 6 to its position closest to the pointer shaft 1 and in this position couples the double pointer wheel 8 and pointer shaft 1 with one another in a force-locking manner.
  • chronograph hands 2 and double hands 14 are in an overlapping position.
  • the double pointer shaft 7 is rotated synchronously via the non-positive coupling of the double pointer lever 10, so that the chronograph hands 2 and the double hands 14 move together as if connected to one another.
  • the tensioning spring 12 of the double pointer lever 10 slides with its coupling surface 13 along the lateral surface of the double pointer heart 6 so that the double pointer 14 stops while the chronograph pointer 2 continues to rotate. This can be seen in Fig. 4.
  • the double pointer lever 10 slides along the lateral surface of the double pointer heart 6 up to its position closest to the pointer shaft 1 and then continues to rotate synchronously with the pointer shaft 1.
  • the tong arms 15 are also provided with fine toothing 16 or roughening, so that a positive connection can be produced between the double pointer wheel 8 and the tong arms 15.
  • the gun arms 15 are connected to one another by a web 17.
  • the web 17 has a bore 18 which is axial to the pointer shaft 1 and through which a stationary fastening bolt 19 projects.
  • the double pointer pliers are pivotably arranged on these fastening bolts 19.
  • the pliers arms 15 are designed as spring arms in such a way that the double pointer pliers are under spring tension of their pliers arms 15 against the double pointer wheel 8.
  • support surfaces are formed on the mutually facing inner sides of the tong arms 15, which consist of two mutually parallel spreading surfaces 21 and adjoining sliding surfaces which move away in a ramp-like manner from the opposite tong arm.
  • the edges present at the transitions from the spreading surfaces 21 to the sliding surfaces 23 form switching edges 24.
  • a spreading disc 26 is pivotally mounted, which on the opposite side to the axis 25 has parallel to the axis 25, protruding switching pins 27 of cylindrical cross section.
  • the pliers arms 15 are, depending on the pivoting position of the spreading disc 26, either with the Spreading surfaces 21 or the sliding surfaces 23 held in contact.
  • the switching pins 27 project through recesses 28 of larger cross section than the cross section of the switching pins 27, which are formed in a switching disk 29 which is arranged parallel to the expanding disk 26 between the expanding disk 26 and the tong arms 15 so as to be pivotable about the axis 25.
  • Two adjacent tooth gaps 32 and 52 are formed on the radially circumferential outer surface of the switching disk 29 and are separated from one another by a switching tooth 33.
  • the switching disk 29 can be pivoted between the two positions in which the latching tooth 35 engages in one of the two tooth gaps 32 and 52. This swivel angle is 14.5 °.
  • the switching disk 29 is formed on its radially circumferential circumferential surface with two switching areas 36 and 37 which follow one another approximately.
  • Each switching area 36 and 37 has two engagement troughs 38 and 39 or 40 and 41 which are formed at a distance from one another.
  • Actuation teeth 42 and 43 of the trigger rocker 44 of a manually actuated trigger 45 can be engaged in the engagement troughs 38-41.
  • the trigger rocker 44 is with her one end about a pivot axis 46 parallel to the axis 25 is articulated on the free end of a pusher lever 47 and has at its other free end in the pivoting direction at a distance one behind the other the two actuating teeth 42 and 43 protruding approximately in the longitudinal direction of the pusher rocker 44 and 43 corresponds to the distance between the engagement troughs 38 and 39 or 40 and 41 of the two switching areas 36 and 37.
  • the lever 47 is articulated at its end opposite the lever rocker 44 about a lever axis 48 parallel to the axis 25.
  • a pressure spring 49 presses the trigger lever 47 away from the switching disc 29, so that the trigger rocker 44 is disengaged from the switching disc 29 during days of rest.
  • the end of the trigger rocker 44 articulated on the trigger lever 47 is held in a position perpendicular to the extension of the trigger lever 47 by a leaf spring 50 attached to the trigger lever 47.
  • the trigger rocker 44 can be pivoted in both pivot directions.
  • FIGS. 7a to 7c show how the switching disk 29 can be pivoted counterclockwise by manual pressurization in accordance with arrow 51 and how it can be pivoted clockwise in FIGS. 7d to 7f.
  • the locking tooth 35 is located in the tooth gap 32.
  • the loading tooth 42 engages in the engagement recess 38 (FIG. 7b) and acts on the switching disk 29 eccentrically.
  • the latter is pivoted counterclockwise until the loading tooth 43 is also supported in the engagement recess 29 (FIG. 7c).
  • the trigger rocker 44 also pivots with respect to the trigger lever 47.
  • the ratchet tooth 35 was moved out of its tooth space 52 to drive over the tip of the switching tooth 33 into the area of the tooth space 32.
  • the switching disc 29 is still a little by the complete retraction of the locking tooth 35 in the tooth gap 32 Moved further clockwise until the position of Fig. 7a is taken again.
  • FIG. 6a corresponds to the position in FIG. 7a.
  • the switching pins 27 abut the spreading surfaces 21 and thereby hold the tong arms 15 lifted off the double pointer wheel 8 against the force of the regions 20 designed as spring arms.
  • the switching pins 27 continue to abut the stops 30 of the switching disk 29.
  • the expansion disk 26 is taken along, so that the switching pins 27 slide along the expansion surfaces 21 until they are in the immediate area of the switching edges 24.
  • the last piece of the rotary movement of the switching disk 29 described by the locking tooth 35 and described in relation to FIG. 7c leads to the switching edges 24 being driven over, so that the switching pins 27 reach the area of the ramp-like sliding surfaces 23 and slide along them (FIG. 6c). This leads to a further pivoting movement of the spreading disc 26, while the switching disc 29 no longer carries out this movement.
  • this relative movement is possible until the switching pins 27 abut the stops 31.
  • the tong arms 15 Since the distance between the tong arms 15 at the foot area of the sliding surfaces 23 is greater than between the spreading surfaces 21 and because the distance of the switching pins 27 from one another at right angles to the double pointer pliers due to the rotation reduced the spreading disc 26, the tong arms 15 come with the areas of their teeth or roughening 16 to the double pointer wheel 8 and block it against rotation, so that the double pointer 14 stops. This position is shown in Fig. 6d.
  • the switching disc 29 and, via the switching pins 27, the spreading disc 26 is pivoted clockwise, the switching pins 27 being guided along the sliding surfaces 23 until they have passed over the switching edges 24 (FIG. 6f ).
  • the double pointer pliers are also spread and the pliers arms 15 lift off the double pointer wheel 8. The double hand 14 can thus again overlap with the chronograph hand 2 and move on with it.
  • the spreading surfaces 21 are inclined so as to be spaced apart to a small extent. This leads to the switching pins 27 sliding along the spreading surfaces 21 moving away from the switching edges 24 and thus turning the spreading disc 26 further clockwise until the switching pins 27 come to rest against the stops 30. This completes the blocking and reading process of the double pointer 14.
  • stop eccentrics 53 protrude with play through recesses 54 formed in the switching disk 29.
  • the inside of the tong arms 15 come to support against their eccentric part when the double pointer wheel 8 is in position if by the contact pressure of the tong arms 15 on the double pointer wheel 8 this from its coaxial position should be pushed out.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Unknown Time Intervals (AREA)
EP92116171A 1992-03-25 1992-09-22 Chronographe Ceased EP0562155A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4209580 1992-03-25
DE19924209580 DE4209580C2 (de) 1992-03-25 1992-03-25 Chronograph mit Doppelzeiger

Publications (1)

Publication Number Publication Date
EP0562155A1 true EP0562155A1 (fr) 1993-09-29

Family

ID=6454912

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92116171A Ceased EP0562155A1 (fr) 1992-03-25 1992-09-22 Chronographe

Country Status (2)

Country Link
EP (1) EP0562155A1 (fr)
DE (1) DE4209580C2 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1343057A2 (fr) * 2002-03-05 2003-09-10 Frank Müller Watchland S.A. Pièce d'horlogerie mécanique
EP1491972A1 (fr) * 2003-06-26 2004-12-29 Richemont International S.A. Montre avec fonction rattrapante et mécanisme rattrapant correspondant
CH703261A1 (fr) * 2010-06-08 2011-12-15 Roth & Genta Haute Horlogerie Piece d'horlogerie munie d'une aiguille d'indication horaire mobile entre deux positions.
EP2662736A1 (fr) * 2012-05-08 2013-11-13 Manufacture La Joux-Perret SA Pièce de commande

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10135110B4 (de) 2001-07-19 2004-05-27 Lange Uhren Gmbh Chronograph
CH700302A2 (de) 2009-01-21 2010-07-30 Montblanc Simplo Gmbh Chronograph.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH304090A (fr) * 1952-10-30 1954-12-31 Jeanneret & Cie R Compteur de temps à rattrapante.
CH337151A (fr) * 1958-03-13 1959-03-15 Depraz & Cie Pièce d'horlogerie à aiguille rattrapante
DE2416527A1 (de) * 1973-04-06 1974-10-24 Valjoux Sa Chronographenuhr

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1673837A1 (de) * 1967-03-13 1971-01-28 Valjoux Sa Mit Einholzeiger ausgeruestete Stoppuhr

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH304090A (fr) * 1952-10-30 1954-12-31 Jeanneret & Cie R Compteur de temps à rattrapante.
CH337151A (fr) * 1958-03-13 1959-03-15 Depraz & Cie Pièce d'horlogerie à aiguille rattrapante
DE2416527A1 (de) * 1973-04-06 1974-10-24 Valjoux Sa Chronographenuhr

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1343057A2 (fr) * 2002-03-05 2003-09-10 Frank Müller Watchland S.A. Pièce d'horlogerie mécanique
EP1343057A3 (fr) * 2002-03-05 2008-03-26 Frank Müller Watchland S.A. Pièce d'horlogerie mécanique
EP1491972A1 (fr) * 2003-06-26 2004-12-29 Richemont International S.A. Montre avec fonction rattrapante et mécanisme rattrapant correspondant
US7130247B2 (en) 2003-06-26 2006-10-31 Richemont International Sa Watch with fly back hand function and corresponding fly back hand mechanism
CH703261A1 (fr) * 2010-06-08 2011-12-15 Roth & Genta Haute Horlogerie Piece d'horlogerie munie d'une aiguille d'indication horaire mobile entre deux positions.
JP2011257398A (ja) * 2010-06-08 2011-12-22 Daniel Roth & Gerald Genta Haute Horlogerie Sa ２つの位置の間で移動可能な時間表示針を有する時計
US8537641B2 (en) 2010-06-08 2013-09-17 Bulgari Horlogerie SA. Timepiece having a time indicator hand which is movable between two positions
EP2662736A1 (fr) * 2012-05-08 2013-11-13 Manufacture La Joux-Perret SA Pièce de commande
WO2013167474A1 (fr) * 2012-05-08 2013-11-14 Manufacture La Joux-Perret Sa Systeme de commande

Also Published As

Publication number Publication date
DE4209580C2 (de) 1994-05-26
DE4209580A1 (de) 1993-09-30

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