EP3123251B1 - Pièce d'horlogerie comportant un réhaut tournant - Google Patents

Pièce d'horlogerie comportant un réhaut tournant Download PDF

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Publication number
EP3123251B1
EP3123251B1 EP15708215.7A EP15708215A EP3123251B1 EP 3123251 B1 EP3123251 B1 EP 3123251B1 EP 15708215 A EP15708215 A EP 15708215A EP 3123251 B1 EP3123251 B1 EP 3123251B1
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EP
European Patent Office
Prior art keywords
flange
crown
timepiece
friction
rotation
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.)
Active
Application number
EP15708215.7A
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German (de)
English (en)
French (fr)
Other versions
EP3123251A1 (fr
Inventor
Philipp Tschumi
Sébastien Briswalter
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.)
Swatch Group Management Services AG
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Swatch Group Management Services AG
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Publication date
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Publication of EP3123251A1 publication Critical patent/EP3123251A1/fr
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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
    • G04B27/00—Mechanical devices for setting the time indicating means
    • G04B27/001—Internal gear therefor, e.g. for setting the second hand or for setting several clockworks
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/027—Wheels; Pinions; Spindles; Pivots planar toothing: shape and design
    • 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
    • G04B3/00—Normal winding of clockworks by hand or mechanically; Winding up several mainsprings or driving weights simultaneously
    • G04B3/04—Rigidly-mounted keys, knobs or crowns
    • G04B3/041—Construction of crowns for rotating movement; connection with the winding stem; winding stems
    • 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
    • G04B11/00—Click devices; Stop clicks; Clutches
    • G04B11/001—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power
    • G04B11/003—Clutch mechanism between two rotating members with transfer of movement in both directions, possibly with limitation on the transfer of power with friction member, e.g. with spring action
    • 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
    • G04B13/00—Gearwork
    • G04B13/02—Wheels; Pinions; Spindles; Pivots
    • G04B13/021—Wheels; Pinions; Spindles; Pivots elastic fitting with a spindle, axis or shaft
    • 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
    • G04B19/06—Dials
    • G04B19/18—Graduations on the crystal or glass, on the bezel, or on the rim
    • 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
    • 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
    • G04B19/28—Adjustable guide marks or pointers for indicating determined points of time
    • G04B19/283—Adjustable guide marks or pointers for indicating determined points of time on rotatable rings, i.e. bezel

Definitions

  • the present invention relates to a timepiece provided with a rotating flange.
  • the patent FR1027587 describes for example such a control system by cooperation of teeth of the flange and a crown pinion, where the gear is only possible in a working position pulled from the crown, and a needle mounted on spring acts as an element index for the angular positions of the flange.
  • a drawback of this type of control system is that it requires relatively deep teeth to ensure the engagement between the teeth of the terminal pinion of the crown and the notching of the flange. Consequently, the overall height is quite large and increases the size of the case making it possible to accommodate such a system ensuring the transmission between the rotation of the crown and that of the flange. Furthermore, the mutual cooperation of the two toothings involved in the gear mechanism makes this transmission system on the one hand quite noisy, and on the other hand relatively inconvenient for fine adjustments. Indeed, the angular indexing of the flange following the actuation of the crown is conditioned by the number of teeth of the terminal pinion of the latter, the diameter of which is generally markedly smaller than that of the flange. However, it is difficult to machine a large number of teeth on a small part, and the number of teeth of this part considerably influences the gear ratios, that is to say the reduction of the angular travel of the flange in relation to to that of the crown.
  • the document CH691199 discloses for example a control ring arranged to actuate, in a predefined axial working position, in rotation a rod provided with a terminal knob devoid of teeth cooperating by friction with a peripheral bead of a timer wheel, and consequently all the timer cog when setting the time.
  • An aim of the present invention is consequently to propose an alternative solution for a control system, in particular of a flange, and more generally of a rotating member for a timepiece, devoid of these known limitations.
  • the invention relates to a timepiece as defined in independent claim 1.
  • Preferred embodiments are defined in the dependent claims.
  • a first advantage of the proposed solution is that it gives a significant gain in overall height thanks to the flattened profile of the running surface of the driving wheel set or of the driven wheel body of the hybrid gear device described, without however reducing the quality of the transmission. nor its reliability over time.
  • Another advantage of the proposed solution is that it confers a silent character of the gear mechanism thanks to the drive roller made of elastomeric material, the flexibility of which avoids jolts and rattling noise of the gear, unlike mutual cooperation. teeth of the moving and driven moving parts of a solution known from the prior art.
  • Yet another advantage of the proposed solution is that it allows a reduction in costs thanks to the economy both of the complex machining of a toothing of a small-diameter mobile, such as typically a drive pinion, and saving in material thanks to the flattening of the drive notches, typically on a driven mobile of larger diameter.
  • Yet another advantage of the proposed solution is that it facilitates the mutual positioning of the control member and the rotating member, in particular in a housing, since the elastic properties of the drive roller made of elastomeric material make it possible to recover positioning clearances for the respective axes of the driving and driven movable elements involved in the proposed gear device.
  • a roller is a part traditionally formed by a steel roller, and which aims to replace sliding friction by rolling friction (see GA Illustrated Professional Dictionary of Watchmaking. Berner, p.518, reference 2221 ). Reference will therefore be made, in the context of the present application, by extension to a drive roller for a part intended to transmit a rotational movement by rolling friction with another moving part.
  • the figures 1A, 1B and 1C respectively show a top view, in section and in three dimensions of a middle part 5 intended to receive the control system according to the invention, formed by a crown 1 and a flange 3, illustrated on figures 2A, B, C and 3A, B, C that follow.
  • the middle 5 comprises two pairs of strap attachment horns 53, as well as a bearing surface 50 forming a bearing surface for the rotating flange 3.
  • a first threaded through hole 51 and a second threaded through hole 52 are drilled in the middle part, preferably for mounting crown tubes.
  • At the level of each of these threaded holes are respectively arranged a first notch 501 and a second notch 502, visible on the figure 1A .
  • These notches make it possible to pass a key for mounting or changing various constituent elements of the crown 1 assembled to the middle 5 during after-sales service, and in particular drive roller 25 on its axis.
  • the figure 1B shows a sectional view of the middle 5 along the first cutting axis BB of the figure 1A , passing through the first threaded through hole 51, on which we can see the thickness of the seat 50, while on the figure 1C we distinguish the same elements as on the figure 1A , except for the first and second indentations 501,502.
  • the figure 2A shows a top view of the flange 3 intended to be mounted on the middle 5 of the figures 1A, 1B, and 1C previous ones, on which we can distinguish its upper face, consisting of an oblique display surface 34, here devoid of display elements, but which can be discerned later on the figure 4 , as well as the upper surface 371 of a peripheral rim 37, intended to provide a bearing surface for an annular element disposed at its periphery.
  • the figure 2B shows flange 3 along the second cutting axis CC of the figure 2A , and highlights the peripheral rim 37, and the upper surface 371 as well as the lower surface 372 thereof, the oblique display surface 34, but above all the rolling teeth 32 which cooperates with the drive roller 25 , visible on figures 3A, 3B and 3C following the crown.
  • This rolling toothing 32 aimed at transmitting the rotational movement of the crown 1 when the latter is actuated by the user of the watch, extends along an annular lower face of the flange 3, and it is possible to note that this rolling toothing 32 is located in a gear plane 35 perpendicular to the second axis of rotation 30 of the flange 3.
  • This rolling toothing 32 is preferably formed by a flat toothing, as illustrated later on figure 5 , but one could consider using, as an alternative, another type of rolling surface such as knurling or even a material having sufficient roughness to guarantee the transmission of the roller bearing. drive 25 avoiding any slippage.
  • the figure 2C illustrates the same components of flange 3 as the figure 2A described above, namely the oblique display surface 34, as well as the peripheral rim 37 and its upper surface 371.
  • the figure 3A illustrates a profile view of a crown 1 according to a preferred embodiment of the invention.
  • this is an unscrewed crown having only one axial position relative to the caseband, it will be understood that the hybrid gear system as well as the arrangement of a drive roller 25 on a crown is independent of the crown structure employed, and that thus a crown of the screwed type could quite well also be used without departing from the scope of the invention nor imposing structural limits on the hybrid gear mechanism proposed between the roller d 'drive 25 and the rolling teeth 32 of the flange 3.
  • the crown 1, movable around a first axis of rotation 10, is conventionally composed of a tube 13, intended to be mounted to the middle part 5 by driving or screwing, above which is arranged a cover 11 operable by the watch user.
  • the drive roller 25 At the level of the proximal end of the crown, to the left of the figures 3A, 3B, and 3B , is arranged the drive roller 25, in the form of a first O-ring type O-ring or an overmolded seal.
  • the advantage of using an O-ring type seal is to be able to use the drive roller 25 as a wearing part, replaceable independently of the rest of the ring 1.
  • the drive roller 25 is made of precisely elastomeric material. to increase frictional forces and improve the quality of rolling transmission, much like a vehicle tire on a road surface.
  • a friction ring 14 which is in the form of a second preferably section seal rectangular in order to maximize the friction surface with each part.
  • the friction surfaces are then present in an annular shape in each of the friction planes.
  • This friction ring 14 aims to increase the torque for setting the flange 3 in rotation and thus eliminate the parasitic and involuntary movements of the flange 3 during handling of the crown 1.
  • the crown 1 is not a screwed crown
  • a friction ring 14 is particularly advantageous for a screwed crown having several axial positions, in particular during the transition from a locked or screwed position "T0" to a pulled or unscrewed position "T1" of setting.
  • the advantage of a screw-down crown would consist in blocking the rotation of the flange 3 on demand and by screwing in, in order to avoid any accidental displacement thereof. This is essential for safety reasons, since time-critical indications for a dive, such as for example a time remaining before performing a decompression stop, must not be able to be modified under any circumstances.
  • the friction ring 14 remains in this case essential to prevent any accidental rotation of the flange 3 precisely during unscrewing operations, and especially when screwing the crown 1 back on.
  • the figure 3B shows a sectional view along the third cutting axis AA of the figure 3A , where we can see, in addition to the other elements already described on the figure 3A , a central cylinder 12 threaded to be connected to a control rod, as well as the axial skirt 111 and the cover 112 of the cover 11.
  • a central cylinder 12 threaded to be connected to a control rod, as well as the axial skirt 111 and the cover 112 of the cover 11.
  • a third seal 16 also of O-ring shape, covered by a deckring 15.
  • the third O-ring 16 is also maintained axially using a spacer 17.
  • the elements of the crown 1 illustrated are similar to those already described in view of the figure 3A , that is to say the drive roller 25, the friction ring 14 and the tube 13; nevertheless, we can distinguish an "H" logo on the external face 113 of the cover 11, and better visualize the knurling on the periphery of the axial skirt 111 of the cover 11, provided to facilitate the gripping and handling of the crown by the user.
  • the figure 4 shows a sectional view of the detail of the control mechanism according to the preferred embodiment of the invention, where the flange 3 and the control ring 1 illustrated separately by the figures 2 and 3 previous ones are now integrated into the middle 5 of a watch.
  • the hybrid gear device of the proposed rotary member control system relates to the transmission of a rotational movement between a first movable member and a second movable member about their respective axis of rotation by means of 'a gear by rolling friction between the two moving parts, one being equipped on its periphery with a preferably smooth elastomeric material and the other with a harder material, such as for example metal or steel , and preferably having teeth.
  • the gear used in the context of the present invention is thus qualified as a “hybrid” not only for this first reason of potential mismatch between the two materials responsible for the transmission, but also because it is possible to make surfaces of a different nature, such as a notch, a knurling and or even a rough surface with a smooth surface, such as that of the drive roller 25.
  • surfaces of a different nature such as a notch, a knurling and or even a rough surface with a smooth surface, such as that of the drive roller 25.
  • the cooperation of elements of a different nature that is to say of which the materials and surface profiles are heterogeneous, is unusual for a traditional watchmaking gear transmission mechanism where in general the metal teeth of a first mobile are provided to cooperate with another metal teeth of another mobile.
  • no toothing is ever used as a running surface either.
  • the second movable element 31 can be considered as the body of the flange 3, referenced on the figure 4 , while the flange 3 here further comprises a Teflon washer 33 arranged above its peripheral rim 37.
  • This Teflon washer 33 bears on the upper surface 371 thereof, in order to minimize friction with the bezel 6.
  • the first movable element, which is integral in rotation with the drive roller 25, is formed here by the central barrel 2 of the crown 1, also integral in rotation with the cover 11 of the crown 1 following the screwing of its part. upper thread 21 in the threaded blind hole 121 of the central cylinder 12.
  • the drive roller 25 is arranged on a driving element, that is to say the central barrel 2 integral in rotation with the ring 1, while the rolling teeth 32 is arranged on a driven element, that is to say, the 2nd mobile element 31 of the flange 3.
  • such an arrangement of the drive roller 25 of elastomeric material is advantageous over the drive member to improve the efficiency of transmission as well as to reduce production costs, in particular when the circumference of the latter, in this case close to that of its lower part 23 - tapped for the possible fixing of a control rod - is clearly less than the circumference of the driven element, like the flange 3, which makes it possible to save elastomeric material, and also simplifies the machining of the movable element 31 as well as of the central barrel 2.
  • the ratio of the circumferences of the driving element relative to the driven element makes it possible to define a continuous gear ratio, unlike a ratio between the numbers of teeth between a mobile leading and a driven mobile, which is a function of discrete values.
  • the proposed solution also dispenses with a very precise positioning of the relative mutual axes of rotation of the parts, also often called “center distance”, these positioning clearances being able to be recovered thanks to the plastic properties of the elastomer drive roller 25 which will then be more or less compressed against the running surface of the mobile to be driven in rotation.
  • the assembly of the control device is thus simplified, which allows additional productivity gains.
  • the control crown 1 is a crown having only one axial position vis-à-vis the middle part, which comprises a cover 11 projecting out of the middle part 5 and which can be actuated in rotation by the user of the watch.
  • a screw-down crown could however be used within the framework of the invention without this affecting the particular transmission device proposed.
  • the cover 11 is mounted above a tube 13, here provided with a thread 131 for its assembly by screwing to the middle 5 in the first threaded through hole 51 in which is inserted a central cylinder 12 integral with the cover 11, and which is provided at its end with a threaded blind hole 121 for assembly to a central barrel 2, for its part having a threaded upper part 21.
  • the central barrel 2 thus forms a first movable element of the control member what constitutes crown 1; it is movable in rotation with respect to the tube 13 screwed to the middle part 5 and it is at its proximal end, that is to say the tapped lower part 23 for the possible addition of a control rod - not shown - that is arranged the drive roller 25 of elastomeric material, replacing an end pinion as on traditional crowns.
  • the drive roller 25 formed here by a first O-ring which is arranged in a groove delimited by two axial stops 24, arranged in a plane perpendicular to the first axis of rotation 10 of the crown, which is also that of the central barrel 2 and which may be integral with the central barrel 2 or consist of washers mounted on the latter.
  • a second seal preferably rectangular or square section, is arranged around the central barrel 2, bearing on a shoulder 22.
  • This second seal constitutes the friction ring 14, already visible on the figures 3A, 3B and 3C previously described, and which is arranged between the central barrel 2 and the tube 13 screwed to the middle part 5 in order to increase the actuation torque of the crown 1, is thus to avoid imposing any parasitic movement on the flange 3.
  • the ring friction 14 is here maintained axially between the shoulder 22 of the central barrel 2, which can also be formed by a washer, possibly even the other side of the washer used as an axial stop 24 for the drive roller 25, and the the lower end 132 of the tube 13 screwed to the middle part 5.
  • this friction ring allows therefore to make it more difficult to activate the crown 1 in rotation, and therefore more effectively secures the angular position of the flange 3.
  • this friction ring 14 is interposed e between the tube 13 and a part of the central barrel 2, here the shoulder 22, so that the friction is arranged in planes perpendicular to the first axis of rotation 10 of the crown 1. This type of friction can be qualified as axial friction.
  • a friction ring 14 directly inside the tube 13 of the crown, in a groove arranged directly on the central barrel 2, so that the friction is no longer axial, but radials.
  • the advantage of using an axial friction ring 14, like the one shown in figure 4 is that it makes it possible to dispense with substantial wall thicknesses in order to be able to arrange therein a sufficiently deep groove and to house the friction element therein. It is thus compatible with crown tubes having parts terminals of reduced diameter, and with a low wall below the threaded part for assembly to the caseband, such as that of the tube 13 shown, which makes it possible in particular to center, if necessary, a casing circle for the movement.
  • the protruding part of the crown 1 outside the middle 5 shows an enlarged view of the detail of the elements illustrated on figure 3B , namely a threaded central cylinder 12 connected to the central barrel 2, the axial skirt 111 and the cover 112 of the bonnet, as well as the sealing elements of the crown head vis-à-vis the inside of the middle part, that is to say a third O-ring 16, covered by a deckring 15, and moreover maintained axially by means of a spacer 17.
  • These elements however have no influence on the gear mechanism hybrid proposed in the context of the present invention, and in particular on the arrangement of the drive roller 25.
  • the drive roller 25 of elastomeric material cooperates with a rolling toothing 32 arranged on the underside of a flange body 3.
  • the flange 3 is composed of a second movable element 31, that is to say the body of the flange on which is arranged the rolling teeth 32, partially covering the edge of the dial 4, and which is provided with a peripheral rim 37 annular on which is mounted a Teflon washer 33 in order to minimize friction with the bezel 6, which is also covered with the crystal 7 and mounted in a notch on the caseband 5.
  • a seal formed by a fourth O-ring 61 is arranged between the bezel 6 and the middle 5, and similarly, a fifth O-ring 81 is interposed between the bottom 8 and the middle 5.
  • the rolling teeth 32 extend essentially in a parallel gear plane. to the first axis of rotation 10 of the crown 1, that is to say perpendicular to the second axis of rotation 30 of the flange 3. Consequently, the hybrid gear mechanism acts as a reference without requiring the use of inclined teeth to save space in height.
  • a hybrid gear device comprising an oblique rolling toothing 32, in particular at 45 degrees relative to the axis of rotation of the driven or driving body, to effect a 90-degree return, or even arrange a rolling toothing 32 extending no longer in a plane but in a cylindrical portion at the periphery of a mobile cooperating with a mobile rotating about a parallel axis, in order to ensure the transmission in rotation to a second mobile rotating about a parallel axis of rotation.
  • the figure 5 shows the detail of a rolling toothing 32 according to a preferred embodiment, where it is arranged on the underside of the second mobile 31 of the flange and extends along an annular surface located in a plane perpendicular to the second axis rotation 30, i.e. the gear plane 35, referenced on the figure 3B .
  • the rolling teeth 32 is formed here of a flat toothing 36, the tooth profile of which is greater than 90 degrees, and preferably between 100 and 130 degrees, here 120 degrees on the figure 5 .
  • Such a profile would not be suitable for a mutual gearing of toothings on adjacent moving parts because of the risk of slipping, but is perfectly suited here to limit the bulk and guarantee the transmission of the rotation by rolling of the drive roller 25 in elastomeric material, slightly compressed in the hollows of this flat toothing 36.
  • a knurling formed for example by oblique ridges extending in a single direction or two symmetrically opposite directions, the difference with the flat teeth corresponding to a shallower depth of the indentations formed on the rolling teeth 32, thus allowing a slight additional gain in height.
  • the depth of the toothings or indentations will preferably not exceed a quarter of a millimeter (i.e. 0.25mm), and depending on the mode preferred embodiment described, this depth is preferably between 0.05 and 0.20mm, in order to gain the maximum possible height compared to a conventional gear mechanism.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Gear Transmission (AREA)
  • Gears, Cams (AREA)
  • Transmission Devices (AREA)
  • Dental Tools And Instruments Or Auxiliary Dental Instruments (AREA)
EP15708215.7A 2014-03-26 2015-03-06 Pièce d'horlogerie comportant un réhaut tournant Active EP3123251B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP14161801 2014-03-26
PCT/EP2015/054744 WO2015144423A1 (fr) 2014-03-26 2015-03-06 Systeme de commande pour piece d'horlogerie

Publications (2)

Publication Number Publication Date
EP3123251A1 EP3123251A1 (fr) 2017-02-01
EP3123251B1 true EP3123251B1 (fr) 2021-04-28

Family

ID=50382320

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15708215.7A Active EP3123251B1 (fr) 2014-03-26 2015-03-06 Pièce d'horlogerie comportant un réhaut tournant

Country Status (5)

Country Link
US (1) US10018963B2 (zh)
EP (1) EP3123251B1 (zh)
JP (1) JP6262364B2 (zh)
CN (1) CN106133619B (zh)
WO (1) WO2015144423A1 (zh)

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EP3712716B1 (fr) * 2019-03-21 2023-03-15 Rolex Sa Lunette de pièce d'horlogerie
EP3754435B1 (fr) * 2019-06-21 2021-12-29 The Swatch Group Research and Development Ltd Piece d'horlogerie a cornes rapportees
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JP7108980B2 (ja) 2020-11-26 2022-07-29 カシオ計算機株式会社 押釦装置および時計
EP4024137B1 (fr) * 2020-12-31 2023-08-23 Meco S.A. Dispositif de commande d'une pièce d'horlogerie

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4336275A1 (fr) 2022-09-08 2024-03-13 Ball Watch Company SA Boite pour piece d'horlogerie comportant une lunette tournante externe commandant un mobile d'affichage interne
WO2024052135A1 (fr) 2022-09-08 2024-03-14 Ball Watch Company Sa Boite pour piece d'horlogerie comportant une lunette tournante externe commandant un mobile d'affichage interne

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EP3123251A1 (fr) 2017-02-01
JP6262364B2 (ja) 2018-01-17
US20170123377A1 (en) 2017-05-04
WO2015144423A1 (fr) 2015-10-01
CN106133619A (zh) 2016-11-16
US10018963B2 (en) 2018-07-10
CN106133619B (zh) 2019-12-03
JP2017508159A (ja) 2017-03-23

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