EP2735923A1 - Zeigerantriebsmechanismus einer elektromechanischen Uhr, der mit einer Verriegelung ausgestattet ist - Google Patents

Zeigerantriebsmechanismus einer elektromechanischen Uhr, der mit einer Verriegelung ausgestattet ist Download PDF

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Publication number
EP2735923A1
EP2735923A1 EP13189578.1A EP13189578A EP2735923A1 EP 2735923 A1 EP2735923 A1 EP 2735923A1 EP 13189578 A EP13189578 A EP 13189578A EP 2735923 A1 EP2735923 A1 EP 2735923A1
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EP
European Patent Office
Prior art keywords
piezoelectric actuator
electric motor
wheel
gear wheels
memory alloy
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.)
Granted
Application number
EP13189578.1A
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English (en)
French (fr)
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EP2735923B1 (de
Inventor
Pascal Lagorgette
Joerg Berthoud
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.)
ETA SA Manufacture Horlogere Suisse
Original Assignee
ETA SA Manufacture Horlogere Suisse
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Application filed by ETA SA Manufacture Horlogere Suisse filed Critical ETA SA Manufacture Horlogere Suisse
Priority to EP13189578.1A priority Critical patent/EP2735923B1/de
Publication of EP2735923A1 publication Critical patent/EP2735923A1/de
Application granted granted Critical
Publication of EP2735923B1 publication Critical patent/EP2735923B1/de
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/08—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically
    • G04C3/12—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a mechanical oscillator other than a pendulum or balance, e.g. by a tuning fork, e.g. electrostatically driven by piezoelectric means; driven by magneto-strictive means

Definitions

  • the present invention relates to a drive mechanism of one or more needles and / or at least one date disc of an electromechanical watch, which is provided with a locking or clutch device.
  • the electro-mechanical watch is time-stamped by hands, which are driven by one or two or three wheels of a set of gear wheels of the drive mechanism.
  • An electric motor drives the set of gear wheels to advance or retreat the needles and / or at least one date disc.
  • the locking or clutching device is provided for momentarily blocking a part of the set of gear wheels to prevent a shift, in particular of the needles in the event of shock of the watch, and while leaving free the advance of the needles for displaying or setting the time.
  • the needles are generally driven via a set or gear train, which can be activated by a Lavet type electric stepper motor.
  • the needles are driven stepwise by one or two wheels of the gear train by means of activation of the stepper motor.
  • a large positioning torque on the stepper motor may allow the use of time indicating hands having a large unbalance.
  • These needles can be bigger or heavier.
  • the positioning torque of the electric motor can keep the needles in position, but an offset of said time indicating hands may occur, which is a disadvantage of an electro watch. -mechanical state of the art.
  • the main purpose of the invention is thus to overcome the aforementioned drawbacks by proposing a needle drive mechanism and / or at least one date disc of an electromechanical watch, which is provided with a locking to increase the unbalance and inertia of the needles driven by a motor with reduced power consumption.
  • the present invention relates to a drive mechanism for one or more needles and / or at least one date disc of an electromechanical watch, which is provided with a locking device, which comprises the features of the independent claim 1.
  • An advantage of the drive mechanism according to the invention lies in the fact that it allows the electric motor to have a relatively low positioning torque only to define the rest position of the rotor, but more to retain the needle or needles to strong unbalance in case of shock of the watch.
  • the piezoelectric element or actuator allows directly or in combination with a lock to lock a wheel of a set of gear wheels.
  • the set of gear wheels is driven by the electric motor, which may be a stepper motor, to advance or retreat the needle or needles including time indication.
  • the latch held by the piezoelectric actuator makes it possible to make a wheel of the set of gear wheels, a frame or a platen of the watch integral between each driving action of the electric motor.
  • the latch By activating the piezoelectric actuator by an electrical signal, the latch can be moved to release said wheel for advance or retraction of one or more needles by means of the electric motor.
  • the piezoelectric actuator it can also be used an electroactive polymer element or a shape memory alloy element, which can heat up to the passage of a current and thus be deformed.
  • Another advantage of using a piezoelectric actuator to lock at least one wheel of a set of gear wheels between each action of the electric motor is that it is possible to have a power consumption less than or equal to traditional mechanism. Better performance, especially keeping needles with high unbalance in case of mechanical shocks, can be noticed by the blocking generated by the piezoelectric actuator.
  • the piezoelectric actuator can generate a large blocking force of at least one wheel of the set of gear wheels.
  • the needle drive mechanism is essentially a timepiece movement provided with an electric motor, which is controlled by a processor clocked by a time base circuit.
  • the mechanism is provided with a locking or clutch device capable of locking at least one wheel of the mechanism between two actuations of advance or recoil of the needles, which are generated by the electric motor.
  • the figure 1 schematically represents the various elements, which make up the mechanism 1 for driving one or more needles 8, 9 and / or at least one date disk not shown, an electromechanical watch.
  • the various elements described below are illustrated without necessarily respecting their actual dimensions for simplification and clarity of description.
  • the mechanism 1 comprises firstly an electric motor 2 and a set of gear wheels 3, 4, 5, 6 and 7, which is arranged between the electric motor and at least needles 8, 9 especially to advance or move the hands 8, 9 to indicate the time.
  • the mechanism 1 further comprises according to the invention a locking or clutch device 20 as explained below with reference to the various embodiments presented, which has the task of blocking at least one wheel of the set of wheels. in particular between each action of the electric motor 2 for the advance or the recoil including the needles indicating the time.
  • the electric motor 2 is fixed in a traditional manner on a not shown turntable, as well as an end of the axes of the wheels 3, 4, 5 and 6 of the set of gear wheels free rotation. The other end of the axes of the wheels 3, 4, 5 and 6 is kept free of rotation at least on a bridge fixed to the plate or through an opening of a dial of the watch.
  • This electric motor 2 is preferably a step motor of the Lavet type.
  • This electric motor 2 is essentially composed of a coil mounted on a magnetic circuit defining the stator, and a not shown rotor coaxially disposed on the axis of a first wheel 3 of the wheel assembly. gear.
  • the motor coil is connected to an electrical drive circuit of the motor, which can be part of a processor circuit clocked by a conventional quartz resonator oscillator stage.
  • the motor rotor is rotated in a clockwise or counterclockwise direction depending on the electric drive pulses provided by the drive electrical circuit. Between each electrical activation, the electric motor is in a so-called rest mode and must guarantee a determined positioning torque, in order to keep the needles 8, 9 for indicating the time of the watch without any shift.
  • the locking device 20 in order to lock at least one toothed wheel, for example the toothed wheel 7 between each activation of advance or recoil of the engine This allows, in case of shock of the watch, to hold the needles 8, 9 for the indication of the time without shifting.
  • the set of gear wheels may comprise, as shown, a first toothed wheel 3, the axis of which is connected to the rotor of the electric motor 2, for actuating a second toothed wheel 4 each time the electric motor 2 is activated.
  • the second toothed wheel 4 meshes with a third toothed wheel 6, which carries on its axis the minute hand 8.
  • a fourth toothed wheel 5 meshes with a complementary gear not shown on the axis of the third toothed wheel 6.
  • This fourth toothed wheel 5 comprises a second gear 5 'on its axis to act as a reduction gear, in order to drive a fifth toothed wheel 7 disposed coaxially on the axis of the third toothed wheel 6.
  • the axial tube of the fifth toothed wheel 7 carries the needle 9 hours.
  • the locking device 20 or clutch comprises in particular a piezoelectric element or actuator 21, which is fixed at one end to a first support 23 of the frame of the electromechanical watch, which can be directly attached to the watch plate, which supports the watch movement. Another end of the piezoelectric actuator 21 may also be fixedly or freely movable in a second support 23 'of the frame.
  • the piezoelectric actuator 21 may be a blade of generally rectangular shape and placed in a curved position to rest in the rest position directly against the toothed wheel 7 to keep it locked between two activations of the electric motor 2.
  • a latch 22 guided in an opening of a guide stud 24 fixed to the watch plate is pushed by the piezoelectric actuator 21 in the rest position between two teeth of the toothed wheel 7 to keep it locked between two activations of electric motor drive.
  • the locking device 20 allows, via the piezoelectric actuator 21 and for example the latch 22, to maintain one of the wheels of the set of gear wheels integral with the frame or the plate.
  • This locking of one of the toothed wheels 7 is performed between two activations of the electric motor 2, that is to say between two training steps to advance or retreat or the needles 8 and 9 of the indication of the 'hour.
  • the clutch or locking device 20 is released. It means that the actuator piezoelectric 21 is excited in its own ultrasonic mode or by a supply voltage to move it in a direction opposite to the locking of the wheel.
  • the supply voltage may come from the processor circuit not shown. This also makes it possible to move the latch 22 in the direction opposite to the locking position, in particular to release the toothed wheel 7 to enable the needles 8 and 9 to advance or retract.
  • the times to activate the piezoelectric actuator represent much less time than the rest times, which leads to reduced power consumption.
  • the electrical signals supplied to the motor coil may in part be used to activate the piezoelectric actuator 21, in order to release the toothed wheel 7 locked between two successive activations of the electric motor 2.
  • the piezoelectric actuator may be composed of titanium oxide or defined as a lead titanate-zirconate type (PZT) material. It can be realized by several layers deposited successively one on the other of this type of piezoelectric material, so as to have a thickness of between 0.1 to 1 mm for example.
  • PZT lead titanate-zirconate type
  • piezoelectric actuator 21 instead of the piezoelectric actuator 21, it can also be envisaged to use an electro-active polymer element or a shape memory alloy element.
  • This shape memory alloy element can heat up to the passage of a current and thus deform away from the wheel to release it.
  • FIGS. Figures 2a and 2b A first embodiment of the locking or clutch device is shown in FIGS. Figures 2a and 2b .
  • This first embodiment corresponds to that described above with reference to the figure 1 .
  • the locking device 20 thus comprises a piezoelectric element or actuator 21, which is fixed at a first end to a first support 23 of the frame of the electromechanical watch.
  • a second end of the piezoelectric actuator 21 can also be held stationary or free of movement in a second support 23 'of the frame.
  • the first and second supports 23, 23 ' can be directly fixed by gluing or welding, or screwed onto the watch plate, which supports the clockwork movement.
  • the piezoelectric actuator 21 may be a blade of generally rectangular shape and placed in a bent position at rest to radially push a latch 22 between two teeth of a wheel of the set of gear wheels, as shown in FIG. figure 2a .
  • the toothed wheel locked by the latch 22 may for example be the toothed wheel 7 bearing on its axial tube the hour hand, but it may also be another wheel of the set of gear wheels. .
  • the latch 22 is in the form of a cylindrical rod with a rounded end, which is housed between two teeth of the toothed wheel 7 for locking.
  • the diameter of this cylindrical rod is adapted to the average distance between two teeth of said toothed wheel 7 to ensure proper locking of the wheel 7.
  • the lock 22 in cylindrical form is guided in a through opening 25 made in a stud 24 fixed on the platen or the frame of the watch.
  • This opening 25 has a cylindrical shape and a diameter slightly greater than the diameter of the latch 22 to let it slide freely in said guide opening 25.
  • the other end of the latch 22 bears on a portion of the piezoelectric actuator 21, which may be a central portion of said actuator.
  • this other end of the latch 22 is glued or welded or screwed to the central portion of the piezoelectric actuator. On this figure 2a the latch 22 is thus pushed between the two teeth of the wheel 7 by the piezoelectric actuator 21, for example in the rest position.
  • the piezoelectric actuator 21 can be activated for example electrically by means of an electrical signal in the form of a supply voltage supplied to the two unrepresented electrodes of said actuator. With the electrical activation provided to the piezoelectric actuator 21, the actuator moves in a direction opposite to the blocking direction shown in FIG. figure 2a .
  • the latch 22 can also be pulled by the piezoelectric actuator 21 in a release position of the wheel 7. However, as the end of the latch 22 has a rounded shape, the teeth of the toothed wheel 7, which can be driven by rotation, can easily push said latch 22, when the piezoelectric actuator is electrically activated.
  • the latch 22 may also be of a different shape than a simple cylindrical rod.
  • Said latch 22 may be designed as a rod of rectangular or polygonal section, in order to slide in an opening 25 of the stud 24 of corresponding shape.
  • Said latch 22 may also have a curved shape as the opening 25 welcoming it, as far as it can easily occupy either a locking position of the wheel 7, or a release position of said wheel to allow it to rotate freely.
  • FIGS. Figures 3a and 3b A second embodiment of the locking or clutch device is shown in FIGS. Figures 3a and 3b .
  • This second embodiment comprises elements identical to those described with reference to the figures 1 , 2a and 2b .
  • the locking device 20 comprises a piezoelectric element or actuator 21, which is fixed at a first end to a first support 23 of the frame of the electromechanical watch.
  • a second end of the piezoelectric actuator 21 can be held stationary or free of movement in a second support 23 'of the frame.
  • the first and second supports 23, 23 ' can be directly fixed by gluing or welding, or screwed onto the watch plate, which supports the clockwork movement.
  • the locking device 20 comprises a latch 22 that can be pushed by the piezoelectric actuator 21 into a hole 14 among several holes made in a toothed wheel of the set of gear wheels.
  • the number of holes 14 may correspond to the number of teeth of said wheel, and said holes are regularly spaced and arranged on a circle concentric with said wheel.
  • the latch 22 is preferably pushed axially by the piezoelectric actuator 21, which is a blade of generally rectangular shape and curved in a rest mode.
  • This tooth wheel may be for example the second toothed wheel 4, but another wheel can be used too.
  • the latch 22 can be made in the form of a cylindrical rod with a rounded end, which is housed by an axial movement in a hole 14 of the second wheel 4 for locking.
  • the diameter of this cylindrical rod is adapted to be slightly less than the diameter of each hole 14 of the second wheel 4.
  • the lock 22 in cylindrical form is guided in a through opening 25 made in a stud 24 fixed to the plate or the frame of the watch.
  • This opening 25 has a cylindrical shape and a diameter slightly greater than the diameter of the latch 22 to let it slide freely in said guide opening 25.
  • the other end of the latch 22 bears on a portion of the piezoelectric actuator 21, which may be a central portion of said actuator. It can be provided that this other end of the latch 22 is glued or welded or screwed to the central portion of the piezoelectric actuator.
  • the piezoelectric actuator 21 can be activated for example electrically by means of an electrical signal in the form of a supply voltage supplied to the two unrepresented electrodes of said actuator. With the electrical activation provided to the piezoelectric actuator 21, the actuator moves in a direction opposite to the blocking direction.
  • the displacement of the piezoelectric actuator 21 activated or not activated, and the latch 22 is symbolically represented by the arrows on the figure 3b .
  • the piezoelectric actuator 21 and the latch 22 are preferably represented on this figure 3b , when the actuator is electrically activated, while the position of the actuator 21 not activated and the latch 22 is represented by broken lines.
  • the latch 22 can also be pulled by the piezoelectric actuator 21 in a release position of the wheel 4.
  • the latch 22 remains engaged in a hole 14 of the toothed wheel 4 during the locking of said wheel. In the event of a radial impact, the latch 22 in one of the holes 14 ensures that the piezoelectric actuator 21 does not lock.
  • FIGS. Figures 4a and 4b A third embodiment of the locking or clutch device is shown in FIGS. Figures 4a and 4b .
  • the locking device 20 comprises only the piezoelectric actuator 21, which is fixed at a first end to a first support 23 of the frame of the electromechanical watch.
  • a second end of the piezoelectric actuator 21 can be held stationary or free of movement in a second support 23 'of the frame.
  • the piezoelectric actuator 21 is used alone to block a wheel of the set of gear wheels or to release said wheel to allow it to rotate under the action of the electric motor.
  • the piezoelectric actuator 21 comprises a through opening 26 preferably disposed in a central portion to allow the passage with a large clearance to the axis 4a of a toothed wheel 4 of the assembly of gear wheels. Both ends of the axis 4a of the wheel are mounted free of movement between a bridge and the watch plate, not shown on these Figures 4a and 4b .
  • the general shape of the piezoelectric actuator 21 corresponds in a manner similar to a generally rectangular shaped blade as shown in FIGS. figures 1 , 2a, 2b, 3a and 3b .
  • the piezoelectric actuator 21 is in a rest position of curved shape to come to apply with a certain force on a lower or upper surface 4b of the tooth wheel 4.
  • the piezoelectric actuator 21 is activated in particular by an electrical signal in the form of a supply voltage to force it to move away from the lower surface 4b of the tooth wheel 4 and thus release it from the blockage.
  • the toothed wheel 4 can freely rotate with each activation of the electric motor.
  • FIGS. Figures 5a and 5b A fourth embodiment of the locking or clutch device is shown in FIGS. Figures 5a and 5b .
  • the locking device 20 also comprises only the piezoelectric actuator 21, which is fixed at a first end to a first support 23 of the frame of the electromechanical watch. A second end of the piezoelectric actuator 21 can be held stationary or free of movement in a second support 23 'of the frame.
  • the piezoelectric actuator 21 is used alone to block a wheel of the set of gear wheels or to release said wheel to allow it to rotate with each activation of the electric motor.
  • the piezoelectric actuator 21 is in the form of a rectangular blade, which is arranged in abutment for example in a rest mode against the axial tube 7a of the fifth toothed wheel 7.
  • the The blade of the piezoelectric actuator 21 may be arranged to be non-curved while applying a locking force to said axial tube 7a.
  • the piezoelectric actuator 21 is activated by an electrical signal in the form of a supply voltage to impose move away from the axial tube 7a of the toothed wheel 7 and release it from the blockage.
  • the distance of the piezoelectric actuator 21 is symbolized by the arrow defining a force due to the electrical activation of the actuator.
  • the toothed wheel 7 can freely rotate with each activation of the electric motor.
  • the locking device 20 also comprises only the piezoelectric actuator 21, which is configured in the form of an elliptical tube, which is arranged around the axial tube 7a, and holds the axial tube 7a of the toothed wheel 7 tightly in place. a blockage in a rest mode as shown in the figure 6a . In this mode of rest, the two electrodes provided on the piezoelectric actuator 21 are not supplied with an electrical voltage by the terminals V + and V- of the electric wires 27 and 28.
  • the piezoelectric actuator 21 is electrically activated to occupy a locking position of one of the wheels in combination or not with a latch 22. In this case, case, when the piezoelectric actuator 21 is no longer electrically activated in a rest mode in combination or not with the latch 22, it releases the wheel, which can be rotated at each activation of the electric motor.
  • the piezoelectric actuator 21 can also be attached to a single support 23 at one end and free movement at its other end.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Electromechanical Clocks (AREA)
EP13189578.1A 2012-11-23 2013-10-21 Zeigerantriebsmechanismus einer elektromechanischen Uhr, der mit einer Verriegelung ausgestattet ist Active EP2735923B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13189578.1A EP2735923B1 (de) 2012-11-23 2013-10-21 Zeigerantriebsmechanismus einer elektromechanischen Uhr, der mit einer Verriegelung ausgestattet ist

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP12194079.5A EP2735922A1 (de) 2012-11-23 2012-11-23 Zeigerantriebsmechanismus einer elektromechanischen Armbanduhr, der mit einer Verriegelung ausgestattet ist
EP13189578.1A EP2735923B1 (de) 2012-11-23 2013-10-21 Zeigerantriebsmechanismus einer elektromechanischen Uhr, der mit einer Verriegelung ausgestattet ist

Publications (2)

Publication Number Publication Date
EP2735923A1 true EP2735923A1 (de) 2014-05-28
EP2735923B1 EP2735923B1 (de) 2019-04-24

Family

ID=47552739

Family Applications (2)

Application Number Title Priority Date Filing Date
EP12194079.5A Withdrawn EP2735922A1 (de) 2012-11-23 2012-11-23 Zeigerantriebsmechanismus einer elektromechanischen Armbanduhr, der mit einer Verriegelung ausgestattet ist
EP13189578.1A Active EP2735923B1 (de) 2012-11-23 2013-10-21 Zeigerantriebsmechanismus einer elektromechanischen Uhr, der mit einer Verriegelung ausgestattet ist

Family Applications Before (1)

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EP12194079.5A Withdrawn EP2735922A1 (de) 2012-11-23 2012-11-23 Zeigerantriebsmechanismus einer elektromechanischen Armbanduhr, der mit einer Verriegelung ausgestattet ist

Country Status (5)

Country Link
US (1) US9188960B2 (de)
EP (2) EP2735922A1 (de)
JP (1) JP5824022B2 (de)
CN (2) CN203858461U (de)
HK (2) HK1186058A2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3537593A1 (de) * 2018-03-09 2019-09-11 ETA SA Manufacture Horlogère Suisse Rotationsvorrichtung eines zahnrads

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2735922A1 (de) * 2012-11-23 2014-05-28 ETA SA Manufacture Horlogère Suisse Zeigerantriebsmechanismus einer elektromechanischen Armbanduhr, der mit einer Verriegelung ausgestattet ist

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FR2616238A1 (fr) * 1987-06-03 1988-12-09 Seiko Epson Corp Montre electronique
GB2294560A (en) * 1994-10-25 1996-05-01 Seikosha Kk Simultaneous stopping of second hand either side of smoothing device
CH699771A2 (fr) 2008-10-16 2010-04-30 Eta Sa Mft Horlogere Suisse Mécanisme de blocage pour module d'entraînement horloger.

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EP2177960B1 (de) * 2008-10-16 2011-12-21 ETA SA Manufacture Horlogère Suisse Blockiermechanismus für Modul eines Uhrwerksantriebs
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EP2735922A1 (de) * 2012-11-23 2014-05-28 ETA SA Manufacture Horlogère Suisse Zeigerantriebsmechanismus einer elektromechanischen Armbanduhr, der mit einer Verriegelung ausgestattet ist

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Publication number Priority date Publication date Assignee Title
FR2389930A1 (de) * 1977-05-02 1978-12-01 Rech Economiques Tech
WO1985001130A1 (fr) * 1983-08-22 1985-03-14 Michel Grosjean Dispositif d'asservissement pour moteur pas a pas
FR2616238A1 (fr) * 1987-06-03 1988-12-09 Seiko Epson Corp Montre electronique
GB2294560A (en) * 1994-10-25 1996-05-01 Seikosha Kk Simultaneous stopping of second hand either side of smoothing device
CH699771A2 (fr) 2008-10-16 2010-04-30 Eta Sa Mft Horlogere Suisse Mécanisme de blocage pour module d'entraînement horloger.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3537593A1 (de) * 2018-03-09 2019-09-11 ETA SA Manufacture Horlogère Suisse Rotationsvorrichtung eines zahnrads
US11428298B2 (en) 2018-03-09 2022-08-30 Eta Sa Manufacture Horlogere Suisse Device for rotating a toothed wheel

Also Published As

Publication number Publication date
JP5824022B2 (ja) 2015-11-25
CN103838133A (zh) 2014-06-04
HK1186058A2 (en) 2014-03-07
US9188960B2 (en) 2015-11-17
JP2014106231A (ja) 2014-06-09
CN103838133B (zh) 2017-01-11
US20140146645A1 (en) 2014-05-29
CN203858461U (zh) 2014-10-01
HK1198722A1 (en) 2015-05-29
EP2735923B1 (de) 2019-04-24
EP2735922A1 (de) 2014-05-28

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