The present invention relates to a connecting device for a bracelet, particularly for a wristwatch bracelet.
More precisely, the present invention relates to a connecting device allowing a removable connection that can easily be detached, particularly without the aid of tools, between a bracelet strap and a folding clasp. A connecting device of this type makes the folding clasp interchangeable.
Wristwatches generally comprise a watch case with a case middle comprising lugs forming horns that are used for attaching the bracelet. The bracelet, meanwhile, comprises two bracelet straps and a clasp, particularly a folding clasp generally comprising two (sometimes three) articulated arms and two fastening portions capable of reversibly cooperating with each other for closing and opening the bracelet, by means of manipulation by the wearer using his/her other hand.
When it is desired to change the folding clasp (or the bracelet straps), the connection between the bracelet strap and one or other of the fastening portions of the folding clasp is unlocked and then detached generally with the aid of a tool.
Document EP1188389 makes provision for two pairs of connecting pieces for a folding clasp, the first pair of connection pieces being adapted to receive the straps of a flexible bracelet and the second pair of connecting pieces being adapted to receive the straps of a bracelet with rigid links.
Document EP1240841 describes a folding clasp, the two mutually articulated arms of which are each equipped with a device for fastening the end of a bracelet strap. One of these two fastening devices comprises a C-cover pivoting about an axis relative to the articulated arm and two studs forming retention members extending the ends of the C-cover parallel to the axis. The band forming the end of the strap can be assembled easily by its being slipped between the retention members of the cover and folded through 180° about the axis. In this case, the end bands of the straps are retained by wedging in the fastening device, in as much as they are under tension. Such a situation can adversely affect the adjustment of the length of these straps if the end band is no longer under tension, particularly in the case of a thin bracelet strap. Furthermore, this fastening device is unsuited to different bracelet strap lengths.
There is thus a need for a connecting device between a bracelet strap and a folding clasp or bracelet loop in order to enable this folding clasp to be interchanged without a tool.
There is also a need for a connecting device between a bracelet strap and a folding clasp to allow this bracelet strap to be interchanged without a tool.
There is also a need for a connecting device between a bracelet strap and a folding clasp that is adapted to the majority of bracelet straps and particularly bracelet straps of relatively different widths.
There is also a need for a connecting device between a bracelet strap and a folding clasp that ensures improved locking between the bracelet strap and the folding clasp.
An object of the present invention is to propose a connecting device free of the limitations of known fastening devices or folding clasps.
According to the invention, these objects are achieved particularly by means of a connecting device allowing a releasable connection between a bracelet strap and a folding clasp comprising at least two articulated arms and two fastening portions capable of reversibly cooperating with each other, the connecting device comprising a first connecting piece capable of being secured to the free end of the bracelet strap and a second connecting piece capable of being mounted on the fastening portion.
In particular, said first connecting piece and said second connecting piece are configured to reversibly cooperate with each other between a first, open position allowing separation of the first connecting piece and the second connecting piece and a second, closed position in which said first connecting piece and said second connecting piece are locked together. In particular, in the first, open position of the connecting device the bracelet is open and in the second, closed position of the connecting device the bracelet may be either or closed (particularly worn around the wrist), with the bracelet strap firmly attached to the folding clasp.
It will be understood that said first connecting piece and said second connecting piece can move relative to each other. In one embodiment, said first connecting piece and said second connecting piece can move relative to each other, with the possibility of a rotational movement or a relative pivoting movement.
This solution offers, particularly, the advantage of simplifying disassembly and reassembly between the fastening portion of a folding clasp and the free end of a bracelet strap. A connecting device of this type further makes it possible to match together, without particular adaptation or transformation, traditional folding clasps and traditional bracelet straps of different sizes and thicknesses.
This solution offers, particularly, the advantage over the prior art that it is possible at the same time enable the bracelet straps and/or the folding clasp to be interchangeable and makes it possible for there to be a reliable fastening between the bracelet strap and the folding clasp using the connecting device according to the invention.
Indeed, the present invention makes it possible, without the aid of tools, by means of simple manipulation of the connecting device, by creating a relative movement between the first connecting piece and said second connecting piece, to pass from a first, open position allowing the release and separation of the first connecting piece and the second connecting piece (and thus between the bracelet strap and the folding clasp) to a second, closed position in which said first connecting piece and said second connecting piece are locked together, and vice versa. In one embodiment, such a movement is a relative movement of rocking or pivoting between the first connecting piece and the second connecting piece.
The result of this is that the folding clasp and the bracelet strap connected together by the connecting device according to the invention can be disassembled without tools.
In one embodiment, said first connecting piece comprises a fastening portion capable of being mounted on the end of the bracelet strap and a first locking portion capable of cooperating with said second connecting piece. In this first connecting piece, said fastening portion and said first locking portion are connected together. Preferably, said fastening portion and said first locking portion are connected together at their ends.
In one embodiment, said locking portion of the first connecting piece is a rod. Thus, this rod can be accommodated in a passage formed at the free end of the bracelet strap. According to a variant embodiment, said rod forming the first locking portion of the first connecting piece has, on at least one section of its length, an oblong or elongated cross section. A shape such as this promotes locking between the first connecting piece and the second connecting piece.
In one embodiment, said fastening portion of the first connecting piece is a rod. According to a variant embodiment, said rod forming the first locking portion of the first connecting piece has, over at least a portion of its length, a circular cross section.
In one embodiment, said fastening portion and said first locking portion of the first connecting piece are mutually parallel rods connected to each other via their ends.
In one embodiment, said second connecting piece comprises an connection portion capable of being mounted on the fastening portion of the folding clasp and a second locking portion capable of cooperating with said first locking portion of the first connecting piece.
In one embodiment, said connection portion of the second connecting piece has a loop form and is capable of pivoting about a rod of the fastening portion of the folding clasp. According to a variant, this connection portion is formed by a portion curved in the form of a loop capable of retaining, without the possibility of exit, the rod of the fastening portion of the folding clasp while allowing relative pivoting between the loop or connection portion and the rod of the fastening portion of the clasp. In this way, there can be relative movement between the connection portion and the rod of the fastening portion of the clasp.
In one embodiment, said second locking portion of the second connecting piece has a hook form with an opening. This second locking portion in hook form is capable of allowing the exit of said first locking portion from the first connecting piece in the first, open position and is capable of retaining the first locking portion of the first connecting piece in the second, closed position. According to a variant, this second locking portion is formed by a portion curved in the form of a hook, that is to say an open loop, which delimits an opening. It will be understood that this opening allows the release, that is to say allows the passage outside this second locking portion, of the first locking portion of the first connecting piece in the first, open position of the connecting device.
In one embodiment, said second connecting piece forms a connecting tongue. It will be understood that such a piece is very easily manufactured, for example from a plate, two opposite sides of which are curved in the direction of the same face of the plate (connecting tongue), one in the form of a hook (open loop) to form the second locking portion and the other in the form of a loop (closed hook, without an opening) to form said connection portion.
The present invention also relates to a closure device for a bracelet comprising a folding clasp comprising at least two articulated arms and two fastening portions capable of reversibly cooperating with each other, and a connecting device as described above, wherein said second connecting piece is mounted pivotably on the fastening portion.
The invention also relates to a bracelet comprising two bracelet straps and a folding clasp comprising at least two articulated arms and two fastening portions capable of reversibly cooperating with each other. A bracelet of this type further comprises a connecting device, as described above, arranged between a fastening portion of the clasp and the end of one of the bracelet straps. In one embodiment, a bracelet of this type constitutes the bracelet of a wristwatch.
In one embodiment, in which said second locking portion of the second connecting piece has the form of a hook with an opening, the arms of the folding clasp close off the opening of the second locking portion of the second connecting piece in said second, closed position of the connecting device. Thus, it will be understood that the arms of the folding clasp contribute to improving locking between the first connecting piece and the second connecting piece, and thus between the bracelet strap and the corresponding fastening portion of the folding clasp.
In one embodiment, said second connecting piece extends at least over the width of the free end of the bracelet strap. At one and the same time, this guarantees greater mechanical stability for the join between the fastening portion of the folding clasp and the free end of the bracelet strap and also an improved aesthetic appearance, by means of an extension also visible between the fastening portion of the folding clasp and the free end of the bracelet strap.
In one embodiment, said two bracelet straps are straps of a flexible bracelet.
In one embodiment, said two bracelet straps are straps of a bracelet with rigid links.
The invention also relates to a watch comprising a watch case and bracelet, said bracelet having two bracelet straps and a folding clasp comprising at least two articulated arms and two fastening portions capable of reversibly cooperating with each other for closing and opening the bracelet, said bracelet further having at least one connecting device, as described above, arranged between a fastening portion of the clasp and the end of one of the bracelet straps.
Furthermore, generally, the present invention relates to an object designed to be worn on the wrist, comprising an article and a bracelet, said bracelet having two bracelet straps and a folding clasp comprising at least two articulated arms and two fastening portions capable of reversibly cooperating with each other for closing and opening the bracelet, said bracelet further having at least one connecting device, as described above, arranged between a fastening portion of the clasp and the end of one of the bracelet straps. An article of this type may be decorative or ornamental, particularly a jewel or other decoration, and/or an article with a use, such as a box with a lid, a compass, a chronometer or chronograph, a telephone, a weather station, an alarm, a device for detecting a physiological parameter, such as heartbeat, etc.
An exemplary embodiment of the invention is indicated in the description illustrated by the appended figures, in which:
Customarily, in bracelets for wristwatches, one of the two straps of the bracelet comprises a passage or hole at its free end to be coupled to the clasp by a fastening system. A rod (particularly a spring bar) traverses this hole (passage) and is thus mounted in one end of the clasp. Mounting and detachment of each strap of the bracelet requires a tool, such as a screwdriver or a needle.
The embodiment illustrated in
As may be seen in
The elements described above are shown in
When its components are mounted together, the first connecting piece 41 of the connecting device 40 is in the form of two mutually parallel rods 41a, 41b connected at each end via a connecting plate 41c. The rod 41b (on the right in
In particular, the fastening portion 41b is a rod of circular cross section housed in the transverse passage 21 formed in the free end (on the left in
The rod 41a (on the left in
As may be seen in
It is therefore understood that the fastening portion 41b and the first locking portion 41a of the first connecting piece 41 are mutually parallel rods connected to each other via their ends by means of fastening plates 41c.
The second connecting piece 42 of the connecting device 40 is in the form of a connecting tongue extending in a transverse direction of the folding clasp 30 and of the bracelet strap 20. The second connecting piece 42 of the connecting device 40 has an external face 421, which is continuously solid and practically flat, designed to be positioned in an opposite direction relative to the bracelet wearer's wrist and an internal face 422 designed to face the bracelet wearer's wrist.
The second connecting piece 42 has a connection portion 42a (on the left in
In particular, the connection portion 42a forms a tubular portion, with a cross section in the form of a loop, which delimits a transverse passage 42a1 receiving, with the possibility of pivoting, a rod 31a of circular cross section of the fastening portion 31 of the folding clasp 30 (on the left in
The second locking portion 42b of the second connecting piece 42 is also a tubular portion extending in a transverse direction of the folding clasp 30 and of the bracelet strap 20, and it is not only open at its two ends but also along the transverse direction, in the direction of the connection portion 42a via an opening 42c. In this way, said opening 42c will allow, in a first, open position shown in
A description will now be given, in connection with
During a first pivoting movement (arrow A in
In this intermediate position, which can be seen in
During a second pivoting movement (arrow B in
Then, by means of a first translational movement (arrow C in
During a second translational movement (arrow D in
The operations described above are implemented in reverse order in order to mount the bracelet strap 20 on the fastening portion 31.
Thus, the first connecting piece 41 and the second connecting piece 42 are movable relative to each other. This relative movement is achieved by means of a simple manipulation without a tool, preferably using the hand, particularly by performing a relative pivoting between the first connecting piece 41 held in one hand and the second connecting piece 42 held in the other hand.
The folding clasp 30 illustrated partially in
On the other side of the folding clasp 30, there is a further fastening portion (not shown) of the folding clasp 30, which is connected to the other bracelet strap (not shown) by means of a conventional fastening system as described above or, alternately, by a connecting device as claimed in the invention as described above.
At their end that is to be connected to the watch case, the bracelet straps comprise a fastening system, particularly a toolless quick-fastening system.
Number | Date | Country | Kind |
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00008/17 | Jan 2017 | CH | national |
Filing Document | Filing Date | Country | Kind |
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PCT/IB2017/058512 | 12/29/2017 | WO | 00 |