WO2020187907A1 - Fermoir pour bracelet - Google Patents
Fermoir pour bracelet Download PDFInfo
- Publication number
- WO2020187907A1 WO2020187907A1 PCT/EP2020/057283 EP2020057283W WO2020187907A1 WO 2020187907 A1 WO2020187907 A1 WO 2020187907A1 EP 2020057283 W EP2020057283 W EP 2020057283W WO 2020187907 A1 WO2020187907 A1 WO 2020187907A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- clasp
- bracelet
- blade
- central blade
- closed configuration
- 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
Links
Classifications
-
- A—HUMAN NECESSITIES
- A44—HABERDASHERY; JEWELLERY
- A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
- A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
- A44C5/18—Fasteners for straps, chains or the like
- A44C5/22—Fasteners for straps, chains or the like for closed straps
- A44C5/24—Fasteners for straps, chains or the like for closed straps with folding devices
Definitions
- the present invention relates to a clasp for a bracelet of a piece of jewelry, jewelry or timepiece. It also relates to a bracelet comprising such a clasp, and to a piece of jewelry, jewelry or timepiece comprising such a clasp.
- the first solution is simple and consists in providing the ends of each strand with means of cooperation, for example in the form of a simple loop and a barb on the one hand cooperating with holes on the other.
- Such a solution has the drawback that when opening the cooperation means, the two strands of the bracelet are immediately separated and cause a risk of the bracelet falling.
- Another solution consists in providing an intermediate element of the clasp type, disposed between the two bracelet strands, which always remains secured to the ends of these two strands.
- a clasp occupies two configurations: a closed configuration, intended for wearing the bracelet, in which the bracelet and the clasp extend around the periphery of the wrist, having a total length allowing the bracelet to be held in place, and an open or deployed configuration. which makes it possible to increase the length of the clasp and therefore of the bracelet, by separating the two ends of the two strands of the bracelet, without detaching them from the clasp, to allow the passage of the hand and the withdrawal of the bracelet. In this open configuration of the clasp, the two strands of the bracelet are not separated, which minimizes the risk of the bracelet falling, which is for example advantageous in the case of a wristwatch.
- a first objective is to find a optimal comfort when wearing the bracelet and a successful aesthetic effect of the bracelet incorporating the clasp. For this, it is advantageous for the clasp to best follow the contour of a wrist, even a small wrist, when the clasp is in the closed configuration.
- a second objective is to achieve a large opening surface of the bracelet in the deployed configuration of the clasp, to facilitate the passage of a hand.
- a difficulty in making a clasp therefore consists in defining the compromise between the fact of fitting in an adequate and comfortable manner the wrist of a wearer of a wristwatch, the fact of producing an aesthetic effect and the fact of '' offer a sufficiently large opening for the passage of the wearer's hand.
- a general object of the present invention is to provide a bracelet clasp which achieves an optimum aesthetic effect, and maximum reliability and usability in its opening and closing function.
- the invention relates to a clasp for a bracelet comprising a central blade and two mobile blades, each mobile blade being articulated at the level of a longitudinal end of the central blade, characterized in that each mobile blade has two lateral arms intended to be housed outside the lateral surfaces of the central blade in closed configuration, these two lateral arms comprising a first free end connected by a first axis to a longitudinal end of the central blade, and a second end adapted to receive a second axis of connection with a bracelet strand, the central blade comprising a hollow portion in its central upper surface to receive such a second axis arranged at the second end of the lateral arms in the closed configuration of the clasp.
- Each movable blade can comprise a U-shape, with a transverse rod which connects the two arms at their second end, said transverse rod comprising a transverse opening suitable for receiving a second connecting pin with a bracelet strand.
- the lower surface of the central blade may be planar or of inverted convexity with respect to its upper surface.
- the bracelet clasp may include at least one device for fixing each movable blade arranged in the central blade for holding the movable blades in the closed configuration of the clasp.
- the fixing device can be a ball / spring assembly or an elastic blade.
- the central blade may include at least one transverse opening on either side of its hollow portion to receive in each of said transverse openings a fixing device comprising two ball / spring assemblies.
- the bracelet clasp may include a hollow area and a stopper arranged in the surface of at least one side arm to cooperate with a fastener in the closed configuration of the clasp.
- the geometry of the side arms of the movable blades can be matched to that of the central blade so that they do not protrude in the vertical direction from either the upper surface or the lower surface of the central blade in the closed configuration of the clasp.
- the vertical direction is understood to be perpendicular to the lower and upper surfaces.
- the invention also relates to a bracelet, characterized in that it comprises two bracelet strands connected by a clasp as described above.
- the first links of each bracelet strand may include hollow areas for housing at least part of the clasp in the closed configuration of the clasp.
- the invention also relates to a piece of jewelry, jewelry or timepiece, characterized in that it comprises a bracelet as described above.
- Figure 1 shows an exploded perspective view from above of the bracelet clasp according to the embodiment of the invention.
- Figure 2 shows a perspective view from above of the clasp in closed configuration according to the embodiment of the invention.
- Figure 3 shows a perspective view from below of the clasp in closed configuration according to the embodiment of the invention.
- Figure 4 shows a top view of the clasp in closed configuration according to the embodiment of the invention.
- Figure 5 shows a side view in longitudinal section of the clasp in closed configuration according to the embodiment of the invention.
- FIG. 6 represents a side view in cross section of the clasp in closed configuration according to the embodiment of the invention.
- FIG. 7 represents a perspective view from above of the central blade of the clasp according to the embodiment of the invention.
- Figure 8 shows a side view of the central blade of the clasp according to the embodiment of the invention.
- FIG. 9 shows a perspective view from above of a movable blade of the clasp according to the embodiment of the invention.
- FIG. 10 shows a device for fixing the clasp according to the embodiment of the invention.
- Figure 11 shows a sectional view of the fastening device of the clasp according to the embodiment of the invention.
- FIG. 12 shows a side view of a bracelet equipped with a clasp in the open configuration according to the embodiment of the invention.
- Figure 13 shows a bottom view of the bracelet equipped with a clasp in the open configuration according to the embodiment of the invention.
- FIG. 14 shows a side perspective view of the bracelet equipped with a clasp in the closing phase according to the embodiment of the invention.
- Figure 15 shows a side view of the bracelet equipped with a clasp in closed configuration according to the embodiment of the invention.
- FIGS. 1 to 5 illustrate a clasp 1 according to one embodiment of the invention.
- a clasp comprises three blades, a central blade 2 surrounded by two movable blades 12, arranged symmetrically by a connection movable in rotation about a first axis 10 arranged at each longitudinal end of the central blade 2.
- Each movable blade 12 comprises a second axis 30 arranged at its longitudinal end opposite to that linked to the central blade 2, by which it is capable of being linked to a bracelet strand, as will be described later in relation to FIGS. 12 to 15.
- FIGs 2 to 4 show the clasp in closed configuration, in which each movable blade 12 is folded over the central blade 2.
- the ends of each movable blade 12 intended to receive the attachment of a bracelet strand come near one of the other, in contact or quasi-contact, in the central part of the central blade 2.
- a fastening device 20 allows the stable maintenance of this closed configuration of the clasp, which will be detailed below.
- Figures 7 and 8 show more precisely the central blade 2 of the clasp 1 according to the embodiment of the invention.
- This central blade 2 is narrow in the transverse direction since it is intended to be covered laterally by the arms of the movable blades 12, as will be specified later.
- This width in the transverse direction represents substantially half of the total width of the clasp.
- a hollow portion 4 is arranged in the central part of the upper surface 5 of the central blade 2, intended to receive transverse rods 14 of the movable blades 12, as is particularly visible in FIG. 5.
- the upper surface has a rounded, convex shape, substantially following the shape of a wrist.
- the lower surface 3 of the central blade 2, intended to come into direct contact with a wrist has a substantially planar central part, even, surprisingly, a slightly inverted convexity with respect to the wrist. This shape allows a maximization of the height (that is to say the thickness) of the central blade 2 in its central part, height measured in the vertical direction, so as to be able to form a hollow portion 4 of sufficient size to receive the transverse rods 14.
- the convexities of the two upper 5 and lower 3 surfaces are adapted to increase the height of the central blade at its center. This increase is also adapted to the material chosen for the central blade, because it also makes it possible to achieve a form of sufficient mechanical strength.
- transverse openings 6 and through are arranged, in an area of significant height of the central blade 2, making it possible to advantageously receive fixing devices 20 for the mobile blades, which will be specified later.
- two transverse openings 6 are arranged on either side of the hollow portion 4.
- a transverse opening 9 is arranged at each longitudinal end of the central blade 2, designed to receive a first axis 10 for the pivoting of a movable blade 12.
- FIG 9 shows a movable blade 12 of the clasp according to the embodiment of the invention.
- a movable blade has a U-shape, comprising two lateral arms 13 intended to be housed outside the lateral surfaces of the central blade 2 in the closed configuration, as shown in FIGS. 2 to 4.
- the two lateral arms 13 comprise a connected first free end, provided with an opening 19 provided to receive the first pivoting link pin 10 at one end of the central blade 2.
- the movable blade 12 further comprises a transverse rod 14, forming the base of the shape in U, connecting the two side arms 13 on their second end.
- This transverse rod 14 comprises a transverse opening 18 through which it is intended to receive the second pin 30 for connection with a strap strand.
- each arm 13 comprises a hollow zone 15 in its interior surface, intended to cooperate with a fixing device, which will be described below.
- the two transverse rods 14 of the two movable blades 12 respectively come to be housed in the hollow portion 4 of the central blade 2, and the side arms 13 of each movable blade are positioned around the central blade, against the right and left side surfaces of the central blade, in quasi contact.
- the movable blades and the central blade are thus positioned substantially in the same horizontal plane.
- the shape of the hollow portion 4 is adapted to the transverse rods 14, so that these rods are fully arranged in these portions hollow, in particular do not protrude or slightly beyond the upper surface 5 of the blade central 2.
- the hollow portion 4 comprises a rounded convex bottom, having a higher surface in the central part, thus forming two housings delimited substantially by walls in portions of a circle, with a radius of curvature suitable for the transverse cylindrical rods 14.
- the side arms 13 have a height and a shape corresponding to the central blade 2, so that these side arms 13 do not protrude from the central blade 2 in the vertical direction in the closed configuration of the clasp. This arrangement makes it possible to minimize the bulk of the clasp in the closed configuration, to minimize its impact on the whole of a bracelet, as will be illustrated below.
- each fixing device 20 comprises a substantially cylindrical body 21, comprising on each open end a ball 22 subjected to the stress of a helical spring 23, in a preloaded configuration. At rest, as shown in Figures 10 and 11, each helical spring 23 exerts a force on the associated ball 22, oriented towards the outside of the fixing device 20. Each ball 22 is thus held in abutment against a side wall interior of the fixing device while protruding from this device at its two ends.
- a fixing device 20 is configured to be positioned in a transverse opening 6 of the central blade 2, so that each of the two balls 22 protrudes outside the respectively left and right side walls of the central blade.
- the arms 13 of the movable blades 12 bear against the projecting balls 22, inducing their temporary retraction inside the fixing device 20 against the forces exerted by the springs. 23 partners.
- the balls 22 are positioned vis-à-vis the hollow areas 15 arranged in the inner surface of these arms 13, which allows the balls 22 to return to their rest position projecting, under the effect of their associated springs.
- the balls 22 thus come to be housed in the hollow zones 15 of the arms 13 of the movable blades 12.
- Each hollow zone 15 comprises a horizontal surface, even chamfered, delimiting it, positioned in the lower part in the closed configuration of the clasp, which thus forms a stopper.
- FIG. 12 illustrates the clasp assembled with two bracelet strands 40, by the second axes 30 of the two movable blades 12, as mentioned previously.
- the clasp is in its deployed configuration, has a total length corresponding to the sum of the lengths of the central blade 2 and the two movable blades 12, which makes it possible to greatly increase the total length of the bracelet for the passage of one hand.
- FIG. 13 illustrates the same bracelet with its clasp in the open position, seen from below. This makes it possible to illustrate that the first links 42 of each bracelet strand, near a movable blade, have a hollow zone 45 in their lower surfaces, of geometry allowing at least partial accommodation of half of the clasp in configuration. closed, to hide it and minimize its aesthetic impact in the closed configuration of the clasp.
- FIG. 14 illustrates an intermediate phase of closing the clasp of the bracelet represented by FIGS. 12 and 13. For this, the two blades are pivoted about their respective first axis 10, until the closed configuration represented by FIG. 15 is reached.
- the links of the bracelet thus have a width greater than that of the clasp.
- This width can be greater than or equal to 30%, even 50%, or even twice the width of the clasp.
- the different blades of the clasp can be made of a metal or a metal alloy, such as titanium, or of ceramic. As a variant, they can be made of a plastic material, such as PEEK, or of a composite material, such as a carbon-based composite.
- the invention also relates to a part which may be a bracelet. It thus also relates to a timepiece, such as a wristwatch, which may include such a bracelet. More generally, it also relates to a piece of jewelry, jewelry or timepiece, which includes such a bracelet.
- the fixing device 20 could be different.
- the number of balls in the ball / spring assemblies could be different.
- the fixing device could be formed by a means other than a ball / spring assembly, for example by another device comprising an elastically movable fixing element. This fastening element can be formed by a lateral elastic blade obtained directly by a cut in the material of the central blade of the clasp.
- the shape of the clasp elements could be different.
- the movable blades always include two lateral arms making it possible to come against the lateral faces of the central blade. However, they do not necessarily have a U-shape, the second connecting pin 30 being able to replace the transverse rod 14.
- the invention also relates to a clasp for a bracelet comprising a central blade and two movable blades, each movable blade being articulated at a longitudinal end of the central blade, characterized in that the central blade comprises at least one transverse opening for receive a fixing device for holding the movable blades in the closed configuration of the clasp.
- This fixing device may include two ball / spring assemblies.
Landscapes
- Buckles (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021556392A JP7462669B2 (ja) | 2019-03-21 | 2020-03-17 | ブレスレット用の留め金 |
| EP20712316.7A EP3941300B1 (fr) | 2019-03-21 | 2020-03-17 | Fermoir pour bracelet |
| US17/440,972 US12048359B2 (en) | 2019-03-21 | 2020-03-17 | Clasp for a bracelet |
| CN202080022078.7A CN113727623B (zh) | 2019-03-21 | 2020-03-17 | 用于链带的扣件 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH00372/19A CH715988B1 (fr) | 2019-03-21 | 2019-03-21 | Fermoir pour bracelet. |
| CH00372/2019 | 2019-03-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020187907A1 true WO2020187907A1 (fr) | 2020-09-24 |
Family
ID=66175098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2020/057283 Ceased WO2020187907A1 (fr) | 2019-03-21 | 2020-03-17 | Fermoir pour bracelet |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US12048359B2 (fr) |
| EP (1) | EP3941300B1 (fr) |
| CH (1) | CH715988B1 (fr) |
| WO (1) | WO2020187907A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4176757A1 (fr) | 2021-11-08 | 2023-05-10 | Dexel S.A. | Fermoir à boucle déployante |
| EP4523562A1 (fr) | 2023-09-13 | 2025-03-19 | Dexel SA | Dispositif comportant un elément de rappel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH641332A5 (en) * | 1982-11-19 | 1984-02-29 | Boucledor Sa | Clasp |
| JPS6266505U (fr) * | 1985-10-18 | 1987-04-24 | ||
| EP0620986A1 (fr) * | 1993-04-19 | 1994-10-26 | Maier S.A. | Fermoir dépliant pour bracelet |
| CH689931A5 (fr) * | 1995-12-18 | 2000-02-15 | Renato Poli | Fermoir pour bracelet, notamment bracelet-montre. |
| US20150351503A1 (en) * | 2014-06-05 | 2015-12-10 | Google Technology Holdings LLC | Wristband with recessed clasp and method of assembling and operating same |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2532840A (en) * | 1948-02-03 | 1950-12-05 | Kreisler Mfg Corp Jacques | Folding extension device |
| FR2735335B1 (fr) * | 1995-06-15 | 1997-08-01 | Smh Management Services Ag | Fermoir de bracelet a boucle deployante |
| DE19729903A1 (de) * | 1997-07-12 | 1999-01-14 | Jaeger Lecoultre Sa | Armband |
| US8789246B2 (en) * | 2011-06-10 | 2014-07-29 | Suunto Oy | Asymmetric butterfly clasp |
| CH705149B1 (fr) * | 2011-06-30 | 2016-02-29 | Thi Technologies Horlogères Ind S A | Fermoir extensible pour bracelet notamment d'une montre. |
| EP2644050B1 (fr) * | 2012-03-27 | 2016-05-25 | Rolex S.A. | Fermoir dépliant pour bracelet |
| EP2813156B1 (fr) * | 2013-06-12 | 2017-04-05 | Simon et Membrez S.A. | Fermoir pour bijou ou montre-bracelet |
| EP2870893B1 (fr) * | 2013-11-07 | 2016-06-08 | The Swatch Group Management Services AG | Fermoir de bracelet |
| US10463141B2 (en) * | 2014-07-01 | 2019-11-05 | Heloisa Fitzgerald Jewelry | Wearable modular electronic device, such as to hold a selectable and/or replaceable biometric sensor in close proximity to and/or in physical contact with a wearer and/or to hold a battery |
| EP3210488B1 (fr) * | 2016-02-25 | 2018-09-26 | Dexel S.A. | Fermoir pour bracelet comportant un dispositif de réglage de longueur du bracelet |
| TWD191955S (zh) * | 2017-05-02 | 2018-08-01 | 百達翡麗日內瓦股份有限公司 | 帶扣 |
| EP3928652B1 (fr) * | 2020-06-23 | 2023-04-19 | Rolex Sa | Dispositif de verrouillage pour fermoir de bracelet |
-
2019
- 2019-03-21 CH CH00372/19A patent/CH715988B1/fr unknown
-
2020
- 2020-03-17 US US17/440,972 patent/US12048359B2/en active Active
- 2020-03-17 WO PCT/EP2020/057283 patent/WO2020187907A1/fr not_active Ceased
- 2020-03-17 EP EP20712316.7A patent/EP3941300B1/fr active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH641332A5 (en) * | 1982-11-19 | 1984-02-29 | Boucledor Sa | Clasp |
| JPS6266505U (fr) * | 1985-10-18 | 1987-04-24 | ||
| EP0620986A1 (fr) * | 1993-04-19 | 1994-10-26 | Maier S.A. | Fermoir dépliant pour bracelet |
| CH689931A5 (fr) * | 1995-12-18 | 2000-02-15 | Renato Poli | Fermoir pour bracelet, notamment bracelet-montre. |
| US20150351503A1 (en) * | 2014-06-05 | 2015-12-10 | Google Technology Holdings LLC | Wristband with recessed clasp and method of assembling and operating same |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4176757A1 (fr) | 2021-11-08 | 2023-05-10 | Dexel S.A. | Fermoir à boucle déployante |
| EP4238447A1 (fr) | 2021-11-08 | 2023-09-06 | Dexel S.A. | Fermoir a boucle deployante |
| EP4523562A1 (fr) | 2023-09-13 | 2025-03-19 | Dexel SA | Dispositif comportant un elément de rappel |
| WO2025057094A1 (fr) | 2023-09-13 | 2025-03-20 | Dexel Sa | Dispositif comportant un élément de rappel |
Also Published As
| Publication number | Publication date |
|---|---|
| CH715988B1 (fr) | 2022-05-31 |
| EP3941300A1 (fr) | 2022-01-26 |
| US20220160083A1 (en) | 2022-05-26 |
| EP3941300B1 (fr) | 2023-04-05 |
| CH715988A1 (fr) | 2020-09-30 |
| US12048359B2 (en) | 2024-07-30 |
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