EP2941673A2 - Hemmungsvorrichtung für ein uhrwerk - Google Patents

Hemmungsvorrichtung für ein uhrwerk

Info

Publication number: EP2941673A2
Authority: EP; European Patent Office
Prior art keywords: escape wheel; cam; balance; mechanical transmission; mechanical
Prior art date: 2013-04-03
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.): Granted

Application number

EP14725591.3A

Other languages

English (en)

French (fr)

Other versions

EP2941673B1 (de

Inventor

Tu Zuan MAI

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.)

Detra SA

Original Assignee

Detra SA

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.)

2013-04-03

Filing date

2014-03-21

Publication date

2015-11-11

2014-03-21 Application filed by Detra SA filed Critical Detra SA

2015-11-11 Publication of EP2941673A2 publication Critical patent/EP2941673A2/de

2016-08-17 Application granted granted Critical

2016-08-17 Publication of EP2941673B1 publication Critical patent/EP2941673B1/de

Status Not-in-force legal-status Critical Current

2034-03-21 Anticipated expiration legal-status Critical

Links

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
- G04B15/00—Escapements
- G04B15/06—Free escapements
- G04B15/08—Lever escapements
- 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
- G04B15/00—Escapements
- G04B15/14—Component parts or constructional details, e.g. construction of the lever or the escape wheel

Definitions

the present invention relates to an exhaust device for a timepiece, in particular for a spiral balance type wristwatch.
patent EP 0018796 B1 proposes a tangential drive exhaust.
This escapement has an escape wheel consisting of two superimposed gears (10) and a rocker having 2 locking vanes (20,21), 2 impulse vanes (25,26) and a plateau pin (18).
the object of the present invention is to overcome the drawbacks mentioned above by providing a tangential drive exhaust device with two active alternations per oscillation period of the balance spring, with a single-level escape wheel.
the exhaust device as defined in claim 1 has a single-level escape wheel through the arrangement of the rest positions and cams. It can also be noted that according to this arrangement, the total number of pallets is reduced.
FIG. 1 represents a general view of an embodiment of the exhaust device according to the invention
FIG. 2 represents the beginning of clearance of the first rest position of the exhaust device of FIG. 1.
- Figure 3 shows the exhaust of Figure 1 during the pulse phase when the pendulum rotates clockwise.
FIG. 5 represents the beginning of disengagement of the second rest position of the exhaust device of FIG. 1.
Figure 6 shows the exhaust of Figure 1 during the pulse phase when the balance rotates in the counterclockwise direction.
FIG. 1 represents a general view in plan and in partial section of an embodiment of the exhaust device according to the invention.
This device comprises:
a rocker 2 pivoting about the axis 20 and having a first cam 21 cooperating in a first plane with the escape wheel 1 and a second cam 22 cooperating in a second plane with the pin 31 of the balance plate.
the first cam 21 has a first concavely shaped rest surface 21 1, a second concave shaped rest surface 221 and a pulse surface 222 adjacent to the second rest surface 221.
a balance plate 3 pivoting about the axis 30.
This plate comprises a pin 31 and a pallet 32 cooperating with the escape wheel 1.
FIG. 2 represents the beginning of disengagement of the first rest position of the escapement of FIG. 1.
the tooth 11 of the escape wheel bears on the first resting surface 21 1.
the surface 21 1 is generally concave. This concave surface may be a continuous surface or formed by two inclined planes to create the entry rest position Re for the end of the tooth of the escape wheel. With the balance plate rotating in the clockwise direction, the pin 31 comes into contact with the second cam 22 and releases the rocker 2 from the rest position Re.
Figure 3 shows the escapement of Figure 1 during the pulse phase when the pendulum rotates clockwise.
the escape wheel released from the rest position, advances in the anti-clockwise direction under the action of the cylinder torque and gives the mechanical impulse to the balance by the action of the tooth 12 of the escape wheel on the pallet 32.
Figure 4 shows the end of the impulse phase when the pendulum rotates clockwise.
the tooth 12 of the escape wheel leaves the pallet 32 while the end of the tooth 1 1 of the escape wheel and the second rest surface 221 come closer together.
FIG. 5 represents the beginning of disengagement of the second rest position of the escapement of FIG. 1.
the tooth 1 1 of the escape wheel bears on the second resting surface 221.
the surface 221 is also of concave shape and the end of the tooth January 1 is locked at the rest rest position Rs.
the balance plate rotating in the counterclockwise direction the pin 31 comes into contact with the second cam 22 and disengages the latch 2 from the rest position Rs.
Figure 6 shows the escape of Figure 1 during the pulse phase when the rocker rotates in the counterclockwise direction.
the escape wheel released from the rest position, advances in the counterclockwise direction under the action of the barrel pair and gives the impulse mechanical pendulum through the cam 22 of the rocker 2 by the action of the tooth 1 1 of the escape wheel on the impulse surface 222.
Figure 7 shows the end of the pulse phase when the rocker rotates counter-clockwise.
the tooth 11 of the escape wheel leaves the impulse surface 222 while the end of the tooth 15 of the escape wheel and the first rest surface 21 1 come closer.
the tooth 15 of the escape wheel will be locked on the resting surface 21 1 at the resting position Re entry and the process starts again
FIG. 8 represents the angle ⁇ between the input and output rest positions as seen from the axis of the escape wheel as well as the angle ⁇ between the input rest position and the axis of the rocker 2 also seen from the axis of the escape wheel. It can be seen that in the case of the escapement according to the invention, the angle is smaller than the angle ⁇ , unlike the exhaust device shown in EP 0018796 B1.

Landscapes

Physics & Mathematics (AREA)
General Physics & Mathematics (AREA)
Transmission Devices (AREA)

EP14725591.3A 2013-04-03 2014-03-21 Hemmungsvorrichtung für ein uhrwerk Not-in-force EP2941673B1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
CH00711/13A CH707862A2 (fr)	2013-04-03	2013-04-03	Dispositif d'échappement pour mouvement d'horlogerie.
PCT/CH2014/000037 WO2014161098A2 (fr)	2013-04-03	2014-03-21	Dispositif d'échappement pour mouvement d'horlogerie

Publications (2)

Publication Number	Publication Date
EP2941673A2 true EP2941673A2 (de)	2015-11-11
EP2941673B1 EP2941673B1 (de)	2016-08-17

Family

ID=50771354

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP14725591.3A Not-in-force EP2941673B1 (de)	2013-04-03	2014-03-21	Hemmungsvorrichtung für ein uhrwerk

Country Status (3)

Country	Link
EP (1)	EP2941673B1 (de)
CH (1)	CH707862A2 (de)
WO (1)	WO2014161098A2 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR3074589B1 (fr) *	2017-12-02	2022-03-25	Jean Pommier	Echappement d'horlogerie a coup perdu a ancre
EP3982203B1 (de)	2020-10-07	2022-12-14	Patek Philippe SA Genève	Uhrwerkshemmung mit semidirektem impuls
EP3982206A1 (de)	2020-10-07	2022-04-13	Patek Philippe SA Genève	Uhr-oszillator

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0018796B1 (de)	1979-04-30	1984-11-07	George Daniels	Uhren, Pendeluhren, Chronometer und Hemmungen dafür
EP1998236B1 (de) *	2007-05-30	2010-07-28	Omega SA	Ankerhemmung für Uhren

2013
- 2013-04-03 CH CH00711/13A patent/CH707862A2/fr not_active Application Discontinuation
2014
- 2014-03-21 EP EP14725591.3A patent/EP2941673B1/de not_active Not-in-force
- 2014-03-21 WO PCT/CH2014/000037 patent/WO2014161098A2/fr not_active Ceased

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014161098A2 *

Also Published As

Publication number	Publication date
WO2014161098A3 (fr)	2015-04-23
WO2014161098A2 (fr)	2014-10-09
CH707862A2 (fr)	2014-10-15
EP2941673B1 (de)	2016-08-17

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