WO2023135470A1 - Réglage fin continu de la longueur utile d'un bracelet - Google Patents

Réglage fin continu de la longueur utile d'un bracelet Download PDF

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Publication number
WO2023135470A1
WO2023135470A1 PCT/IB2022/061920 IB2022061920W WO2023135470A1 WO 2023135470 A1 WO2023135470 A1 WO 2023135470A1 IB 2022061920 W IB2022061920 W IB 2022061920W WO 2023135470 A1 WO2023135470 A1 WO 2023135470A1
Authority
WO
WIPO (PCT)
Prior art keywords
fine adjustment
blocking means
folding clasp
adjustment device
bracelet
Prior art date
Application number
PCT/IB2022/061920
Other languages
German (de)
English (en)
Inventor
Benjamin PFYFFER VON ALTISHOFEN
Original Assignee
Pfyffer Von Altishofen Benjamin
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 Pfyffer Von Altishofen Benjamin filed Critical Pfyffer Von Altishofen Benjamin
Publication of WO2023135470A1 publication Critical patent/WO2023135470A1/fr

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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
    • A44C5/246—Fasteners for straps, chains or the like for closed straps with folding devices having size adjusting means

Definitions

  • the invention relates to a fine adjustment mechanism for adjusting the useful length of a bracelet and a folding clasp with an integrated, continuously adjustable fine adjustment mechanism.
  • CH696697 describes a bracelet with a clasp formed from two hinge plates and having a cover plate.
  • the clasp is equipped with a fine adjustment mechanism based also on a flat rack and a toothed part.
  • Closures are also known in which different mechanisms cooperate to adjust the useful length of the strap.
  • EP2606762 describes a clasp for a bracelet with two
  • Length adjustment devices a first precision length adjustment device and a second, elastic adjustment device, whereby a permanent elastic retention of the bracelet around the wrist is made possible.
  • the spring-loaded adjustment device is primarily designed to adjust the strap length to accommodate the varying thickness of a neoprene sleeve over which the strap is worn.
  • an alternative solution to the already known approaches for bracelet clasps with integrated fine adjustment of the usable length of a band is to be found.
  • the fine adjustment mechanism should be easy to use.
  • the fine adjustment mechanism is intended to prevent unintentional lengthening of the bracelet.
  • a continuously variable fine adjustment device for adjusting the working length of a bracelet for a folding clasp, which has a first surface and a second inclined surface facing the first surface.
  • the first area has a length and a width.
  • the length of the first Area specifies the longitudinal direction of the fine adjustment.
  • the second inclined surface is angled with respect to the first surface. The angle is formed by the longitudinal extensions of the two faces.
  • the angle is greater than the arctan of the coefficient of sliding friction n between the blocking means and the two surfaces.
  • the first surface and the second inclined surface, or their extensions, preferably enclose an angle of 2° to 20°, or of 4° to 10°.
  • a suitable selection of the angle prevents the blocking means from slipping.
  • the clamping is therefore non-slip, even if the partitions have a very smooth surface with little friction. If the angle is greater than the arctan of the coefficient of sliding friction, the locking becomes unreliable.
  • the clamping mechanism is based on the principle of the roller freewheel, which is conventionally used for clamping rollers.
  • the two surfaces form an intermediate space that tapers in the longitudinal direction.
  • the distance between the first surface and the second inclined surface continuously decreases in the longitudinal direction of the fine adjustment.
  • a blocking means which preferably has a cylindrical shape, is movably arranged in the gap.
  • the blocking means is displaceable along the longitudinal direction.
  • the blocking means can also have a different, preferably rounded shape. It can also be spherical, for example.
  • the blocking means is pushed deeper into the tapering gap, i.e. in the direction of the continuously decreasing distance between the first surface (31) and the second inclined surface (32), by means of a biasing means, so that the first surface and the second inclined surface contacted when the fine adjustment device assumes a blocked state. In this blocked condition, the blocking agent is pinched between the surfaces.
  • the fine adjustment device is in a locked state, the usable length of the wristband cannot be extended.
  • the biasing means is a mechanical biasing means, preferably a coil spring.
  • other elastic organs or watchmaking springs can also be used as pretensioning means.
  • the biasing means pushes the blocking means indirectly into the clamped position through at least one additional element of the fine adjustment device and/or a folding clasp.
  • the biasing means it is also possible for the biasing means to directly contact the blocking means to urge it into the clamped position.
  • the fine adjustment device further comprises an unlocking member adapted to be moved against the force of the biasing means, thereby releasing the blocking means. In this state, the released blocking means can be displaced in the opposite direction of the narrowing of the gap.
  • the fine adjustment device assumes an extendible state.
  • the usable length of the bracelet can be both lengthened and shortened. Since the locking position of the blocking means is stepless along the inclined surface, that is to say that no discrete locking positions are provided along the inclined surface, the usable length of the bracelet can be adjusted continuously. The length of the bracelet can thus be optimally adjusted to the wrist of the wearer.
  • the fine adjustment is very simple to carry out and requires no fragile or easily bent or adjustable small parts. This contributes significantly to the robustness and reliability of the fine adjustment device of this invention.
  • the fine adjustment device can be integrated in a folding clasp in a very space-saving manner without significantly changing its dimensions.
  • a folding clasp with the fine adjustment mechanism of this invention can therefore be made slim, which increases the wearing comfort of the clasp.
  • the changeover of the fine adjustment device from its blocked to its extendable state can be effected very simply by shifting the blocking means from its jammed position.
  • the user must actuate a simple sliding movement of an operating member, for example a cover of a folding clasp, in order to displace the blocking means and allow the bracelet to be lengthened. This sliding motion can be performed with one hand.
  • the locking means and the unlocking member are adapted to perform translational movements in the longitudinal direction with respect to the second inclined surface.
  • the locking means and the unlocking member carry out the movement together, the Unlocking member is moved by the user to cause displacement of the blocking means.
  • the translational movement of the first surface with respect is not coupled to the movement of the unlocking member.
  • the first surface is moved independently of the unlocking member.
  • the first surface is preferably a surface of an element connected to the bracelet.
  • the first surface can be pulled toward the wristband in the extensible state of the fine adjustment device, thereby increasing the usable length of the wristband.
  • the usable length of the bracelet is determined by the position of the first surface relative to the second inclined surface.
  • a first end of the strap is connected to the first face. Shifting the first surface in the opposite direction to this end of the bracelet causes the useful length of the bracelet to be reduced.
  • the opposite direction of the first end of the bracelet also corresponds to the opposite direction of the force exerted on the blocking means by the biasing means.
  • the second bevel is closer to the first end of the wristband than in a setting where the useful length of the wristband is longer.
  • the useful length of the bracelet is longer when the first face is displaced with respect to the second inclined face in the direction of the force of the biasing means, and the useful length is shorter when the first face is displaced with respect to the second inclined face in Is shifted in the opposite direction of the force of the biasing means.
  • the first surface can be moved in the opposite direction to the first end of the bracelet, both in the blocked state and in the extendable state of the fine adjustment device, thereby reducing the useful length of the bracelet.
  • the fine adjustment device has a single blocking means.
  • a biasing means is arranged on one side of the blocking means, or offset in the longitudinal direction to one of the two sides of the blocking means. This means that two pretensioning means are arranged on both sides, or offset in the longitudinal direction on both sides, in relation to the blocking means.
  • the sides here refer to the two sides of an axis intersecting the block means which is parallel to the longitudinal direction of the fine adjustment device.
  • the fine adjustment device has two blocking means and two biasing means.
  • each biasing means preferably operates a blocking means.
  • Each of the biasing means in this embodiment preferably abuts and urges a blocking means towards the tapered surfaces. In this embodiment no additional elements are necessary, the biasing means pressing the adjacent blocking means directly.
  • the unlocking member bears against the biasing means in order to oppose it when actuated by the user.
  • the blocking means is connected to the unlocking member in such a way that the translational movement of the unlocking member and the translational movement of the blocking means are coupled. This embodiment is particularly advantageous when, as described above, a single blocking means is pressed into the narrowing of the gap by two biasing means.
  • the unlocking member can also ensure that the blocking means is always engaged when the fine adjustment mechanism is not actuated against the force of the biasing means.
  • the biasing means press the blocking means into the tapering space by means of the unlocking member.
  • the unlocking member is directly adjacent to the blocking means. In this embodiment, the unlocking member moves the blocking means directly against the force of the biasing means when actuated by the user.
  • the invention further relates to a folding clasp with a fine adjustment device.
  • the folding clasp has a cover and a base which is hingedly connected to a first leg of the folding clasp.
  • the base has a base body and a clamping element which protrudes from the base body in the direction of the cover and is fixedly connected to the base.
  • the folding clasp further comprises a guide element with two guide arms which are arranged on both sides of the clamping element and which can be moved translationally in the longitudinal direction in relation to the clamping element.
  • the guide element is designed to be attached to an end of a bracelet.
  • the folding clasp also has a blocking means, as described above, which is preferably of cylindrical design.
  • the position of the blocking means dictates the state of the fine adjustment device.
  • At least one of the guide arms has a first surface which is orthogonal to the base body and is parallel to the longitudinal axis of the folding clasp.
  • a second inclined surface of the fine adjustment device is formed by a surface of the clamping member that is angularly disposed with respect to the first surface.
  • the unlocking device In order to release the blocking means from a jammed position, the unlocking device must actively oppose the force of the Be moved biasing means. This requires active operation of the fine adjustment mechanism by the user sliding the unlocking device. At rest, that is to say when the user does not actuate the unlocking member, the fine adjustment device is blocked, thereby preventing a bracelet from unintentionally lengthening or slipping out of the folding clasp.
  • the first surface and the second inclined surface face each other so that the distance between the first surface and the second inclined surface decreases continuously in a direction of a longitudinal axis of the folding clasp, thereby forming a tapered gap.
  • the blocking means is movably arranged in this space.
  • the folding clasp assumes a blocked state in which an extension of the useful length of the bracelet is prevented when the blocking means is pinched between the first surface and the second inclined surface.
  • the blocking means can be moved as described above by means of an unlocking member against the force of a biasing means to put the folding clasp in an extendable state.
  • a change from a blocked to an extendable state and vice versa can take place in the closed folding clasp.
  • the adjustment of the useful length can therefore also be carried out with the folding clasp closed.
  • the fine adjustment device can also be adjusted when the folding clasp is in the open state.
  • the blocking means is displaced by a structural element, such as a protrusion or a depression, on the inside of the cover, preferably the underside of a cover panel.
  • a structural element such as a protrusion or a depression
  • sliding the cover with respect to the base allows the blocking means to slide out of the clamp and back into the clamp. The return is effected by the force of the biasing means and is therefore automatic.
  • the cover is accordingly displaced. This can be done very easily by the wearer of a wristwatch with the folding clasp with one hand, or with one or two fingers of one hand.
  • the cover has a cover plate and two longitudinal walls which are arranged essentially orthogonally to the cover plate.
  • the release member is a protrusion of a longitudinal wall of the cover, projecting into the folding clasp, which is oriented to oppose the force of the biasing means.
  • both lateral walls have an unlocking member, each of the unlocking members is aligned to actuate each biasing means.
  • an unlocking member is preferably directly adjacent to a biasing means.
  • the cover is displaceable with respect to the base along the longitudinal axis of the folding clasp, the folding clasp being released from its blocked state by sliding the cover against the force of the biasing means exerted on the unlocking member.
  • the cover has on its inside a recess adapted to receive an upper portion of the blocking means, so that the blocking means protruding into the recess can be brought out of its clamped position by sliding the cover in relation to the base .
  • the recess is preferably located on the inside of the cover plate.
  • the usable length of the bracelet can be shortened, preferably by pushing the guide element deeper into the folding clasp. Sliding the guide element into the folding clasp counteracts the force of the pretensioning means, as a result of which the blocking means is temporarily released from the jam. Once displacement of the guide member has ceased, the biasing means again urges the blocking means to its clamped position in the tapered gap.
  • a movement of the guide element in the opposite direction is prevented by the jammed blocking means.
  • the usable length of the bracelet can be both lengthened and shortened.
  • the invention further relates to a wristwatch which has the fine adjustment device described here or the folding clasp described here.
  • FIGS. 1A to 1D are views showing an embodiment of a folding clasp according to this invention, in which the fine adjustment device is in a locked state;
  • 1A is a side view of the embodiment of the folding clasp
  • Fig. 1B is a plan sectional view taken along A-A of the folding clasp shown in Fig. 1A;
  • 1C is a plan view of the embodiment of the folding clasp
  • Figure 1D is a lateral view of section B-B of the folding clasp shown in Figure 1B;
  • FIGS. 2A to 2D are views of an embodiment of a folding clasp according to this invention, in which the fine adjustment device assumes an extensible state;
  • 2A is a side view of the embodiment of the folding clasp
  • Figure 2B is a plan sectional view taken along A-A of the folding clasp shown in Figure 1A;
  • FIG. 2C is a plan view of the embodiment of the folding clasp;
  • FIG. 2D shows a lateral view of section BB of the folding clasp shown in FIG. 1B;
  • Fig. 3 is a perspective side view of the in figures
  • FIGS. 1A through 3 is an exploded view of the embodiment of the folding clasp shown in FIGS. 1A through 3;
  • FIG. 5 shows a perspective view from below of the cover 1 of the embodiment of FIGS. 1A to 4;
  • Figures 6A and 6B are views of an alternative embodiment of a folding clasp according to this invention in which the fine adjustment device has two locking means;
  • 6A is a side view of the embodiment of the folding clasp
  • Figure 6B is a sectional plan view along E-E of the folding clasp shown in Figure 6A;
  • FIG. 1A to 6B Embodiments of folding clasps with fine adjustment devices according to this invention are shown schematically in Figures 1A to 6B.
  • Figures 1A to 5 relate to a folding clasp with a first embodiment of the continuously variable fine adjustment device of this invention
  • Figures 6A and 6B relate to a folding clasp with a second embodiment of the fine adjustment device of this invention.
  • FIG. 1A to 1D are views of a closed folding clasp of the first embodiment in the blocked state.
  • FIG. 1A is a schematic side view
  • FIG. 1C is a schematic plan view of the folding clasp.
  • the folding clasp shown here has a cover 1 with a cover plate 15 and two longitudinal walls 16 extending orthogonally from the cover plate 15 in the direction of the arm of the wearer.
  • the longitudinal walls each have an opening 13 through which a slide 5 protrudes from within the cover 1 to the outside.
  • the cover plate 15 can have protrusions 17 that make it easier for the user to slide the cover 1.
  • the protuberances 17 are designed to increase the friction between the operating finger or thumb and the cover so that sliding of the cover along the longitudinal axis X of the folding clasp is facilitated.
  • a first end of a bracelet (not shown) is attached to a guide element 2 .
  • the guiding element 2 can be pushed deeper into the folding clasp, or slide or be pulled out of the folding clasp, the guiding element 2 preferably being designed not to be completely removed from the folding clasp.
  • the guide element 2 has an end portion 23 to which the bracelet is attached (not shown).
  • the guide element 2 also has two guide arms 22 which adjoin the end section 23 of the guide element and are connected to one another at their other end by a transverse connecting section 24 .
  • One of the guide arms has a first surface 31 against which a blocking means 3 abuts when the folding clasp is in the blocked state.
  • the blocking means 3 is movably embedded between the first surface 31 and the inclined surface 32 .
  • the blocking means assumes a cylindrical shape.
  • the cylindrical shape is particularly favorable because the friction along the two surfaces 31, 32 when Shifting is minimized and since this shape is well suited for clamping in the tapered gap.
  • the invention is not limited to this specific form of the blocking agent 3.
  • Other shapes for example a spherical shape or a triangular shape, are also possible, as long as these shapes allow the blocking means 3 to be displaced and clamped between the two surfaces 31,32.
  • the guide element 2 cooperates with a base 4 along which the guide arms 22 slide.
  • the base is shown in Figure 4.
  • the base has a base body 40 from which a clamping element 42 protrudes in the direction of the cover plate 15 .
  • the clamping element 42 is arranged between the two guide arms 22 .
  • the guide element 2 can be pulled out of the folding clasp until the cross-connection section 24 contacts the clamping element 42 .
  • the clamping element 42 prevents the guide element 2 from completely sliding out of the folding clasp.
  • the clamping member is spaced apart from one of the two guide arms 22 . This distance forms the space in which the blocking means 3 movable with respect to the guide element 2 and the clamping member 42 is located.
  • the side of the clamping member 42 that delimits the gap is an inclined surface 32 which is opposite a first surface 31 of one of the guide arms 22 that delimits the gap.
  • the inclined surface 32 is arranged at an angle with respect to the first surface 31, so that the gap between the two surfaces 31, 32 narrows along the longitudinal direction of the folding clasp.
  • two prestressing means 9 which are helical springs, are shown.
  • the prestressing means 9 are offset on both sides in the longitudinal direction to the blocking means 3 .
  • the prestressing means 9 are each clamped between a slide 5 and a projection 14 of a longitudinal wall 16 of the cover 1 .
  • This projection forms the unlocking member 14 which can be displaced against the compressive force of the biasing means 9 in order to release the blocking means from its wedging between the inclined surface 32 of the clamping member 42 and the surface 31 of the guide arm 22. Since the unlocking element 14 is part of the cover, moving the cover 1 causes the pretensioning means 9 to be compressed.
  • the cover 1 is additionally designed to move the blocking means 3 .
  • the compressive force of the prestressing means 9, as well as the movement against this force of the unlocking member 14 is thereby transmitted to the blocking means 3 by means of the cover 1.
  • the biasing means 9 pushes the blocking means 3 over the cover 1 to the clamped position in the tapered space.
  • the movement of the unlocking member 14 in the opposite direction of the force of the biasing means 9 is also transmitted via the cover 1 to the blocking means 3, which is thus released from the jam.
  • Figures 1C and 1D show further views of the same embodiment in the locked state of the fine adjustment device, Figure 1D being a B-B sectional view of Figure 1C.
  • An upper section of the blocking means 3, ie the section closest to the cover 1, is embedded in a suitable depression 18 in the underside of the cover plate 15, as shown in FIG.
  • the underside of the cover is the side facing the wearer's arm.
  • the upper section of the blocking means 3 is preferably embedded in the recess 18 with play in order to support an even movement.
  • the incorporation of the blocking means 3 in the recess 18 of the cover 1 causes the blocking means 3 to move together with the cover 1 when the cover 1 is slid against the biasing means 9 or when the biasing means 9 retracts the cover 1 pushes the rest position. In this rest position, the blocking means 3 is clamped in the narrowed space.
  • the blocking means 3 is fixed to the underside of the cover 1, or is a component of the cover 1.
  • a pin 8 passes through the slide 5, the prestressing means 9 and the unlocking member 14.
  • the pin serves as the central shaft that guides the translational movements of these elements.
  • the pin 8 acts as a coordinating structure causing the release member 14, biasing means 9 and base 4 to remain assembled. If the pin 8 is removed, these elements can fall apart.
  • the pin 8, the section of the slider 5 located within the cover of the folding clasp, the prestressing means 9 and the unlocking element 14 are embedded in a side section 41 of the base 4.
  • the side portion 41 is designed to align the pin 8 parallel to the central longitudinal axis X of the folding clasp.
  • the side section has a section which extends in the longitudinal direction of the folding clasp and has two arms which protrude in the direction of the longitudinal wall 16 .
  • the shape of the side portion 41 resembles a "C" with the open side of the "C” abutting the longitudinal wall 16 of the cover.
  • a first end of the strap is preferably attached to the guide member 2 shown in Figure 1D, while the other end of the strap is attached to an end portion 60 of the second leg 6 of the folding clasp.
  • Figures 2A to 2D represent the illustrated in Figures 1A to 1D embodiment of the folding clasp, in which the fine adjustment assumes an extendable state. The views and sections of Figures 2A to 2D correspond to those of Figures 1A to 1D.
  • the cover 1 is displaced against the urging force of the coil spring 9, so that the coil spring 9 is compressed.
  • the blocking means 3 By embedding the upper portion of the blocking means 3 in the cover 1, as shown in Figure 2D, it is displaced together with the cover against the compressive force of the biasing means 9.
  • the blocking means 3 is therefore released from its clamping between the first surface 31 and the inclined surface 32 in the illustrated extendable state of the folding clasp.
  • the blocking means can be slid along the first surface 31 . It is not necessary for the released blocking means 3 to lose contact with the first surface 31 .
  • the blocking means 3 preferably has lateral play in the recess 18 in the inside of the cover 1.
  • the guide element 2 including the bracelet attached to it can be pushed deeper into the folding clasp in the extendable state, or slide or be pulled out of the folding clasp until the cross-connection section 24 of the guide element 2 abuts the clamping element 42.
  • the cover can be moved by the wearer of a wristwatch with the folding clasp very easily with one hand, or with one or two fingers of one hand, in order to enable the useful length of the bracelet to be shortened.
  • the wearer can slide the cover with one finger and at the same time the bracelet in push another finger into the folding clasp near the clasp.
  • the shortening can also be achieved in the blocked state of the folding clasp without actuating the cover, by pushing the bracelet into the folding clasp.
  • the fine adjustment of the usable length of the bracelet can be carried out in the closed state of the folding clasp.
  • the usable length can also be adjusted in the open folding clasp.
  • the shortening and lengthening therefore does not require a complex sequence of movements and can be carried out very easily with one hand in the closed, worn folding clasp.
  • the useful length can be lengthened by moving the cover 1 .
  • the displacement of the cover 1 is sufficient to cause an elongation, so that no additional movement is necessary. For example, no additional lifting or pulling of an element is necessary to effect the elongation.
  • the lengthening of the useful length is therefore achieved in a single movement.
  • the function of the slider 5 is explained using the open folding clasp shown in FIG.
  • the slider 5 serves primarily to maintain the closed state of the folding clasp and to open the folding clasp.
  • the folding clasp is in its open state when the legs 6, 7 of the folding clasp, which are connected to one another in an articulated manner, unfold.
  • the folding clasp assumes its closed state when the legs 6, 7 of the folding clasp, which are hinged to one another, and the cover, which is hinged to the first leg 7, are folded together.
  • a portion of the slider 5 protrudes through an elongated opening in the longitudinal wall of the cover 16 therethrough.
  • the slider cooperates with the pin 8 and an end portion 60 of the second leg 6 of the folding clasp to hold the folding clasp in its closed condition.
  • the slider rests on an arm of the side portion 41 of the base.
  • the pin 8 which forms the shaft, is at least partially inserted in suitable through openings of the two arms of the side section 41.
  • the pin is movably mounted in these through openings so that it can be moved in the longitudinal direction of the folding clasp in order to be inserted and removed from the recess 68 of the end section of the second leg.
  • the end of the prestressing means 9 opposite the unlocking element 14 rests on a slide 5 .
  • a securing element 10 which is fixed to the pin 8 is inserted between the prestressing means 9 and the slide 5 .
  • the securing element shown in FIG. 4 is a snap ring 10. However, the securing element can also be designed differently.
  • the securing can also be achieved by an interference fit between the pin 8 and the slider 5.
  • the pin 8 which protrudes through the section of the slide 5 located within the folding clasp cover in the longitudinal direction of the folding clasp, engages in a suitable recess 68 in the end section of the second leg 6 . This engagement prevents the second leg 6 from unfolding from the first leg 7 and the cover 1. Accordingly, the folding clasp is held in the closed state.
  • the slide 5 In order to remove the pin 8 from the recess 68, the slide 5 is moved against the force of the biasing means 9. As shown in Figure 5, between the slider 5 and the biasing means 9 is interposed a securing element 10 which is attached to the pin 8 to prevent the slider from sliding along the pin in the opposite direction to the force of the biasing means 9 .
  • the pin 8 is accordingly displaced together with the slide 5 in the opposite direction of the force of the pretensioning means 9 and is thereby removed from the recess 68 .
  • the slide 5 moves the pin 8 out of the recess 68 by moving it against the securing element 10 and against the force of the biasing means 9 .
  • Both the fine adjustment mechanism and the closing mechanism of the folding clasp which is provided by pin 8 and recess 68, are operated by the same pretensioning means 9.
  • only two pretensioning means 9 are required in order to operate both the opening and closing of the folding clasp and its fine adjustment.
  • both biasing means 9 To open the folding clasp both biasing means 9 must be pressed simultaneously, which by adjusting the position of the both slide 5 is effected. Both sliders are moved independently of each other. Adjusting the position of a single slider is not enough to open the folding clasp. This causes a double security of the closure mechanism, which is based in the example shown on the pin 8 and its engagement in the recess 68, since unintentional opening of the folding clasp by moving a single slide is prevented.
  • the locking mechanism of the embodiment of Figures 1A to 5 can be actuated in a single movement.
  • both sliders 5 are pulled at the same time. As soon as the pins 8 no longer engage in the recesses 68, this pulling causes the clasp to open in a single movement. There are therefore no further movement sequences, such as pressing in an element or lifting an element, necessary to cause the folding clasp to open.
  • the base 4 of the folding clasp forms a guide rail for the sliding movement of the guide arms 22.
  • the base thus contributes to the stable and smooth movement of the guide element 2.
  • the first leg 7 of the folding clasp is hinged to the base 4 by means of a pin 11 .
  • the second leg 6 is connected to the first leg 7 in an articulated manner at one end. At its other end, which includes the end portion 60, the second leg is attached to the other end of the bracelet.
  • Figure 5 is a perspective view of the cover 1 from below, in which the recess 18 for storing the upper portion of the blocking means 3 is shown.
  • Figures 6A and 6B illustrate an alternative embodiment of a fine adjustment device disposed in a folding clasp according to this invention.
  • Figure 6A is a side view of a folding clasp with the fine adjustment device.
  • this version of the fine adjustment is not limited to a folding clasp with two cover parts.
  • the fine adjustment device shown in FIG. 6B can also easily be integrated into folding clasps with a single cover, for example as shown in FIG. 1A.
  • FIG. 6B shows a section E-E of the embodiment of the folding clasp shown in FIG. 6A.
  • FIG. 6B Two cylindrical blocking means 3 arranged mirrored to the longitudinal axis X of the folding clasp are shown in this FIG. 6B.
  • the two blocking means 3 are each clamped between an inclined surface 32 and a first surface 31 of a guide arm 22 .
  • the blocking means 3 are pressed by a helical spring 9 into the clamping position between the two surfaces 31,32.
  • each helical spring 9 presses a blocking means 3 into the tapering distance between a guide arm 22 and a sloping surface 32.
  • the sloping surfaces 32 are each formed by projections of the longitudinal walls 16 of the cover projecting into the clasp.
  • the inclined surfaces 32 can also be arranged on another element of the folding clasp, provided that it is arranged to create a distance between the inclined surface 32 and the first surface 31 that tapers in the direction of the strap.
  • the unlocking element 14 shown in FIG. 6B is a highlight, for example a tick, protruding from the underside of the cover plate 15 into the clasp. If the cover plate is designed in two parts, the unlocking element is arranged on a part of the cover that can be displaced in relation to the base of the clasp.
  • the unlocking member 14 is designed to move the blocking means 3 against the compressive force of the biasing means 9, which is for example a helical spring.
  • the cover 1 is displaced in the opposite direction to the end of the bracelet attached to the guide element 2.
  • the cover is displaced against the direction of force of the biasing means 9 along the longitudinal axis X of the folding clasp.
  • the cover can be actuated at the protrusions 17 provided for this purpose.
  • the unlocking member 14 contacts the blocking means 3 directly in order to release it from the jamming between the inclined surface 32 and the first surface 31 against the compressive force of the biasing means 9, in this case a helical spring.
  • the biasing means 9 makes contact with the blocking means 3 on the opposite side of the blocking means 3 facing away from the unlocking element 14.
  • the biasing means 9, blocking means 3 and unlocking element 14 are therefore arranged in series one behind the other in order to be able to interact.
  • two sets of biasing means 9, blocking means 3 and unlocking member 14 are arranged horizontally mirrored along the longitudinal axis X of the folding clasp.

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  • Buckles (AREA)

Abstract

L'invention concerne un dispositif de réglage fin à réglage continu pour adapter la longueur utile d'un bracelet pour un fermoir déployant, comprenant une première face (31) définissant la direction longitudinale du dispositif de réglage fin, une deuxième face oblique (32) orientée vers la première face (31) et disposée selon un angle par rapport à la première face, les deux faces (31, 32) délimitant un espace intermédiaire allant en s'amincissant dans lequel un moyen de blocage (3) est monté mobile. Un moyen de précontrainte (9) est disposé de manière à serrer le moyen de blocage (3) entre la première surface (31) et la deuxième surface oblique (32), de sorte que le dispositif de réglage fin se trouve dans un état bloqué dans lequel un allongement de la longueur utile du bracelet est empêché. Un organe de déverrouillage (14) peut être déplacé par translation à l'encontre de la force du moyen de précontrainte (9) pour libérer le moyen de blocage (3), de sorte que le dispositif de réglage fin se trouve dans un état extensible dans lequel la longueur utile du bracelet peut être augmentée. L'invention concerne en outre un fermoir déployant équipé du dispositif de réglage fin et une montre-bracelet munie du fermoir ou du dispositif de réglage fin.
PCT/IB2022/061920 2022-01-12 2022-12-08 Réglage fin continu de la longueur utile d'un bracelet WO2023135470A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH000037/2022A CH719354A2 (de) 2022-01-12 2022-01-12 Verschluss mit Längenregulierungsvorrichtung.
CHCH000037/2022 2022-01-12

Publications (1)

Publication Number Publication Date
WO2023135470A1 true WO2023135470A1 (fr) 2023-07-20

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PCT/IB2022/061920 WO2023135470A1 (fr) 2022-01-12 2022-12-08 Réglage fin continu de la longueur utile d'un bracelet

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CH (1) CH719354A2 (fr)
WO (1) WO2023135470A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH691159A5 (fr) * 1996-08-27 2001-05-15 Rolex Montres Fermoir dépliant pour bracelet.
CH696697A5 (it) 2003-10-06 2007-10-15 Brogioli S A Bracciale snodato con fermaglio composto da due lamine e da una placca di copertura.
US20120297592A1 (en) * 2010-02-04 2012-11-29 Arcofil S.A. Bracelet latch having an extensible buckle
EP2606762A1 (fr) 2011-12-22 2013-06-26 Montres Tudor S.A. Fermoir à différents réglages de longueur de bracelet

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH691159A5 (fr) * 1996-08-27 2001-05-15 Rolex Montres Fermoir dépliant pour bracelet.
CH696697A5 (it) 2003-10-06 2007-10-15 Brogioli S A Bracciale snodato con fermaglio composto da due lamine e da una placca di copertura.
US20120297592A1 (en) * 2010-02-04 2012-11-29 Arcofil S.A. Bracelet latch having an extensible buckle
EP2606762A1 (fr) 2011-12-22 2013-06-26 Montres Tudor S.A. Fermoir à différents réglages de longueur de bracelet

Also Published As

Publication number Publication date
CH719354A2 (de) 2023-07-31

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