EP4141582A1 - Boite de montre comprenant un fond orienté dans une position angulaire prédéfinie, montre comprenant ladite boîte et procédé de montage d'une telle boîte - Google Patents

Boite de montre comprenant un fond orienté dans une position angulaire prédéfinie, montre comprenant ladite boîte et procédé de montage d'une telle boîte Download PDF

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Publication number
EP4141582A1
EP4141582A1 EP21193001.1A EP21193001A EP4141582A1 EP 4141582 A1 EP4141582 A1 EP 4141582A1 EP 21193001 A EP21193001 A EP 21193001A EP 4141582 A1 EP4141582 A1 EP 4141582A1
Authority
EP
European Patent Office
Prior art keywords
watch case
caseband
ring
watch
case
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.)
Pending
Application number
EP21193001.1A
Other languages
German (de)
English (en)
French (fr)
Inventor
Philipp Tschumi
Philippe SCHERRER
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 Research and Development SA
Original Assignee
Swatch Group Research and Development 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.)
Filing date
Publication date
Application filed by Swatch Group Research and Development SA filed Critical Swatch Group Research and Development SA
Priority to EP21193001.1A priority Critical patent/EP4141582A1/fr
Priority to US17/659,362 priority patent/US20230068766A1/en
Priority to KR1020220058552A priority patent/KR20230030510A/ko
Priority to JP2022079969A priority patent/JP7430215B2/ja
Priority to CN202211025430.XA priority patent/CN115729087A/zh
Publication of EP4141582A1 publication Critical patent/EP4141582A1/fr
Pending legal-status Critical Current

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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
    • G04B37/00—Cases
    • G04B37/0008—Cases for pocket watches and wrist watches
    • 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
    • G04B37/00—Cases
    • G04B37/0008—Cases for pocket watches and wrist watches
    • G04B37/0033—Cases for pocket watches and wrist watches with cover or bottom which can slide or turn (without a 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
    • G04B37/00—Cases
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/11—Hermetic sealing of openings, joints, passages or slits of the back cover of pocket or wrist watches
    • 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
    • G04B37/00—Cases
    • G04B37/08—Hermetic sealing of openings, joints, passages or slits
    • G04B37/11—Hermetic sealing of openings, joints, passages or slits of the back cover of pocket or wrist watches
    • G04B37/113—Hermetic sealing of openings, joints, passages or slits of the back cover of pocket or wrist watches without special hermetic sealing pieces

Definitions

  • the invention relates to the field of horology, and in particular to the components of a watch case.
  • the invention relates to a watch case comprising a back oriented in a predefined angular position, a watch comprising said case and a method of mounting such a case.
  • Watch cases have a middle part on either side of which are arranged a crystal and a back.
  • the back is generally fixed to the caseband by screwing, and for this purpose comprises a thread intended to cooperate with an internal thread made in the caseband.
  • This type of fixing does not make it possible to control the orientation of the caseback relative to the middle part, and in particular relative to a vertical axis 12 o'clock - 6 o'clock, when they are fixed to each other.
  • the invention solves the aforementioned drawbacks by proposing a solution making it possible to fix a back to a middle part in a single predefined relative angular position.
  • the present invention relates to a watch case comprising a middle part comprising a first opening receiving a glass, opposite a second opening receiving a bottom, the bottom is held in abutment against an annular bearing surface of the middle part by a threaded ring cooperating by screwing with said middle part, the back comprising a single first indexing means configured to cooperate with a single second indexing means with which the middle part is equipped so as to immobilize the said back in rotation according to a single angular position with respect to the middle part .
  • the back does not require adjustment of its angular positioning relative to the middle part after having been fixed to the middle part insofar as it is locked in rotation in a single predefined position.
  • the present invention also makes it possible to control the tightening torque of the back, and in particular of the ring, since when screwing the ring onto the caseband, the back is oriented in the predefined position.
  • the orientation of the bottom is achieved with great precision thanks to the cooperation between the first and second indexing means, said indexing means playing a keying role insofar as they make it possible to immobilize the bottom in a single position. .
  • This feature also guarantees simplicity of production and assembly of the watch case, which contributes to reducing the manufacturing costs of watches comprising this case.
  • first and second indexing means blocks the mobility of the bottom in rotation and that the ring blocks the mobility of the bottom in translation.
  • the invention may also include one or more of the following characteristics, taken separately or in all technically possible combinations.
  • the first and the second indexing means are formed by a lug/notch couple.
  • the caseband comprises an internal thread with which cooperates by screwing an external thread with which the ring is provided.
  • the back has a peripheral lip extending radially around the periphery of said back, and being arranged to bear against the annular bearing surface of the middle part.
  • the ring comprises an annular portion comprising the external threading and an end surface by which it bears against the peripheral lip of the bottom.
  • the peripheral lip extends from a tubular wall materializing an upper end of the back, the tubular wall being engaged in a bore of the caseband.
  • the notch is arranged on the tubular wall and extends axially from a free end of said tubular wall, said notch being configured to cooperate with the lug, said lug being arranged on the bore.
  • a seal is arranged between the caseband and the back, and is interposed between a shoulder formed by the junction between the tubular wall and the peripheral lip, and an annular recess of the caseband formed at the junction between the annular seat and bore.
  • the ring comprises a radial portion connected to the annular portion and having an internal radial surface arranged opposite an annular bearing surface of the bottom.
  • the radial portion of the ring comprises a lower cylindrical surface facing which is arranged a lower cylindrical surface of the bottom of complementary shape.
  • the present invention relates to a watch comprising a watch movement housed in an internal volume of a watch case as described previously, said internal volume being defined between the middle part, the crystal and the back.
  • the present invention relates to a method for assembling a watch case as described above, in which the back is engaged in the second opening of the middle part so that the first indexing means cooperates with the second indexing means, then the ring is screwed to the caseband so as to immobilize said back resting against said caseband.
  • FIG. 1 shows a cross-sectional view of a watch 10 comprising a watch case 100 according to the present invention.
  • the case 100 comprises a middle part 110 comprising a first opening receiving a crystal 120, opposite a second opening receiving a bottom 130; crystal 120, back 130 and middle 110 defining a volume inside which a watch movement is arranged in a manner known to those skilled in the art.
  • the case 100 comprises a ring 140 adapted to be fixed to the caseband 110 while maintaining the back 130 in position against the latter.
  • the ring has a central through hole through which the bottom is visible, as shown in the figures 1 to 3 .
  • back 130, the ring 140 and the caseband 110 have shapes of geometry of revolution, whose axes of revolution are coaxial, as visible on the figure 2 And 3 .
  • the ring 140 has an external thread 141 by which it is intended to cooperate by screwing with an internal thread 111 made in the caseband 110, at the level of the second opening.
  • the ring 140 has, at one of its ends called the "upper end", an axial annular portion defined by an end surface 142 connecting a cylindrical surface upper 143 and an outer surface, the external thread 141 being made on the outer surface of the annular portion.
  • bottom 130 has a peripheral lip 131 extending radially around the periphery of bottom 130, from a tubular wall 132 materializing an upper end of said bottom 130, said peripheral lip 131 being arranged to bear against an annular bearing 112 of the caseband 110. Furthermore, the tubular wall 132 is engaged in a bore 113 of the caseband 110 when the back is fixed to said caseband 110.
  • the bottom 130 may comprise a plurality of peripheral lips (not shown in the figures) each extending radially around a portion of the periphery of the bottom 130, in the same plane.
  • the ring 140 is configured so as to bear against the peripheral lip 131 of the back 130 by the end surface 142 of the annular portion, when said ring 140 is screwed with the middle part 110.
  • the back 130 comprises a single first indexing means configured to cooperate with a single second indexing means with which the caseband 110 is provided, so as to immobilize said caseback 130 in a single angular position with respect to the caseband 110 when the ring 140 fixes the back 130 against said middle part 110.
  • first and the second indexing means are formed by a lug/notch couple.
  • the bottom 130 is provided with a notch 133 arranged on the tubular wall 132, said notch extending axially from a free end of said tubular wall 132.
  • the notch 133 is intended to cooperate with a lug 114 extending inside the middle part 110. More particularly, the lug 114 is arranged on the bore 113 and has a shape complementary to that of the notch 133 , to within mechanical play, so as to be able to engage inside the notch 133 when the tubular wall 132 of the bottom 130 is introduced into the bore 113.
  • the notch 133 can be arranged in the caseband 110 and the lug 114 can be arranged on the back 130, so analogous to the preferred embodiment shown in the figures.
  • the ring 140 includes a radial portion having an inner radial surface 144 intended to be arranged facing an annular bearing surface 134 of the back 130, when the ring 140 is screwed to the internal thread 111 of the caseband 110.
  • the radial portion is connected to the annular portion, as shown in the figure 1 .
  • the fixing ring 140 can possibly bear against the peripheral annular surface 134 of the bottom 130 in addition to bearing against the peripheral lip 131.
  • This annular surface 134 is connected to the peripheral lip 131 by an upper cylindrical surface 135 intended to be arranged facing the upper cylindrical surface 143 of the annular portion of the ring 140, when the back 130 is fixed to the caseband 110.
  • a seal 150 is arranged between the caseband 110 and the back 130, and is interposed between a shoulder formed by the junction between the tubular wall 132 and the peripheral lip 131, and an annular recess of the caseband 110 formed at the junction between the annular surface 112 and the bore 113.
  • the radial portion of the ring 140 comprises a lower cylindrical surface 145 facing which is arranged a lower cylindrical surface 136 of the bottom 130 of complementary shape.
  • the back 130 When the back 130 is fixed on the middle 110, the back 130 is first engaged in the second opening of the middle 110 so that the lug 114 cooperates with the notch 133, the tubular wall 132 of the back 130 being engaged in the bore 113 of the middle part 110 until the peripheral lip 131 is arranged in abutment against the annular bearing surface 112.
  • the bottom 130 and the middle part 110 then form a housing defined between the upper cylindrical surface 135, the peripheral lip 131 and the internal thread 111 of the middle part 110, in which the ring 140 is intended to be engaged.
  • the ring 140 is then brought to cooperate with the internal thread 111 of the middle part 110, until the peripheral lip 131 is tightened against the annular surface 112 and reaches a predetermined tightening torque sufficient to fix rigidly, that is to say according to a mechanical connection of the recessed type, the back 130, the ring 140 and the caseband 110 together.
  • the ring 140 can comprise a fillet or a chamfer at the junction between the upper cylindrical surface 143 of the annular portion and the end surface 142, and the bottom 130 can also comprise a fillet or a chamfer at the junction between the annular bearing surface 134 and the upper cylindrical surface 135, so as to facilitate the introduction of the ring 140 within the housing formed between the bottom 130 and the middle part 110.
  • a chamfer or a fillet can be made at the junction between the cylindrical surface of the radial portion of the ring 140 and the inner radial surface 144 of said radial portion.
  • the ring 140 comprises on an outer face opposite to the internal volume of the watch case 100, radial notches 146 intended to cooperate with a tool manipulated by a user. Thanks to the radial notches 146, the ring 140 can be screwed or unscrewed by manipulation of the tool, so as to fix the ring 140 and the bottom 130 to the caseband 110, or on the contrary, so as to separate them from said caseband 110 .

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electric Clocks (AREA)
  • Closures For Containers (AREA)
  • Packages (AREA)
  • Adornments (AREA)
EP21193001.1A 2021-08-25 2021-08-25 Boite de montre comprenant un fond orienté dans une position angulaire prédéfinie, montre comprenant ladite boîte et procédé de montage d'une telle boîte Pending EP4141582A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP21193001.1A EP4141582A1 (fr) 2021-08-25 2021-08-25 Boite de montre comprenant un fond orienté dans une position angulaire prédéfinie, montre comprenant ladite boîte et procédé de montage d'une telle boîte
US17/659,362 US20230068766A1 (en) 2021-08-25 2022-04-15 Watch case comprising a back oriented in a predefined angular position, watch comprising said case and method for assembling such a case
KR1020220058552A KR20230030510A (ko) 2021-08-25 2022-05-12 미리 규정된 각도 위치로 배향된 백을 포함하는 시계 케이스, 상기 케이스를 포함하는 시계 및 그러한 케이스의 조립 방법
JP2022079969A JP7430215B2 (ja) 2021-08-25 2022-05-16 所定の角度位置に配向された背部を有する時計ケース、前記ケースを含む時計、およびそのようなケースを組み立てるための方法
CN202211025430.XA CN115729087A (zh) 2021-08-25 2022-08-25 包括以预先限定的角位置定向的底盖的表壳、包括所述壳的表以及用于组装这样的壳的方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21193001.1A EP4141582A1 (fr) 2021-08-25 2021-08-25 Boite de montre comprenant un fond orienté dans une position angulaire prédéfinie, montre comprenant ladite boîte et procédé de montage d'une telle boîte

Publications (1)

Publication Number Publication Date
EP4141582A1 true EP4141582A1 (fr) 2023-03-01

Family

ID=77499702

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21193001.1A Pending EP4141582A1 (fr) 2021-08-25 2021-08-25 Boite de montre comprenant un fond orienté dans une position angulaire prédéfinie, montre comprenant ladite boîte et procédé de montage d'une telle boîte

Country Status (5)

Country Link
US (1) US20230068766A1 (ja)
EP (1) EP4141582A1 (ja)
JP (1) JP7430215B2 (ja)
KR (1) KR20230030510A (ja)
CN (1) CN115729087A (ja)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2182416A1 (fr) * 2008-10-31 2010-05-05 Pibor ISO S.A. Dispositif d'orientation et de fixation d'un fond et procédé d'orientation et de fixation d'un tel fond sur une carrure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010127683A (ja) * 2008-11-26 2010-06-10 Seiko Instruments Inc 携帯時計

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2182416A1 (fr) * 2008-10-31 2010-05-05 Pibor ISO S.A. Dispositif d'orientation et de fixation d'un fond et procédé d'orientation et de fixation d'un tel fond sur une carrure

Also Published As

Publication number Publication date
JP2023033098A (ja) 2023-03-09
JP7430215B2 (ja) 2024-02-09
US20230068766A1 (en) 2023-03-02
KR20230030510A (ko) 2023-03-06
CN115729087A (zh) 2023-03-03

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