Watch case equipped with an exterior element

Abstract

A timepiece includes a watch case formed by a middle closed by a back and a crystal, the middle being equipped with horns defining a space for receiving a bracelet strand, the timepiece including a sole arranged to rest against the back, the sole, the bracelet strand and the space between the horns having shaped elements arranged to cooperate by interlocking when the middle, the sole and the strand are assembled.

Claims

1. A timepiece comprising: a watch case formed by a middle closed by a back and a crystal, the middle being equipped with horns defining a space for receiving a bracelet strand; and a sole arranged to rest against the back, wherein the sole, the bracelet strand and the space between the horns define shaped elements arranged to cooperate by interlocking when the middle, the sole and the strand are assembled, and wherein the sole includes holding studs configured to cooperate with cavities formed in the back.

2. The timepiece according to claim 1, wherein the shaped elements comprise through holes, said holes being aligned with one another when the middle, the sole and the strand are assembled, and fo ruing a channel arranged to receive a bar holding the middle, the sole and the strand assembled.

3. The timepiece according to claim 1, wherein the space between the horns comprises a first shaped element having at least one element that protrudes.

4. The timepiece according to claim 3, wherein the sole comprises a second shaped element, in accordance with the shape of the space between the horns, the second shaped element comprising at least one cutout arranged to receive the at least one element protruding from the space between the horns.

5. The timepiece according to claim 3, wherein the bracelet strand comprises at one of its ends a third shaped element having at least one space arranged to cooperate with said at least one element protruding from the space between the horns.

6. The timepiece according to claim 4, wherein the sole and bracelet strand form a single element comprising said second shaped element.

7. The timepiece according to claim 1, wherein the sole has an opening to access the back of the watch case.

8. The timepiece according to claim 1, wherein the middle and the sole are made of plastic material, and wherein the plastic material is polycarbonate, PMMA or MABS.

9. The timepiece according to claim 1, wherein the bracelet strand is made of an elastomer-based material.

10. The timepiece according to claim 1, wherein the holding studs each include a hook at a free end thereof, and the cavities each include a retention element therein to engage with a respective holding stud.

Description

SUMMARY DESCRIPTION OF THE DRAWINGS

(1) Other features and advantages of the invention will become more apparent upon reading the following description of a particular embodiment of the invention, given by way of simple illustrative and non-limiting example, and the appended figures, wherein:

(2) FIG. 1 is an exploded view of a watch in accordance with the invention according to a first embodiment;

(3) FIGS. 2a and 2b are respectively a perspective view of a watch case and a bottom view of a sole in accordance with the invention;

(4) FIG. 3 is a perspective view of a sole of a watch case in accordance with the invention;

(5) FIG. 4 is a perspective view of a bracelet strand of the watch in accordance with the invention;

(6) FIGS. 5a to 5c are respectively a top view, a sectional view along the line A-A and a sectional view along the line B-B of a watch in accordance with the invention;

(7) FIG. 6 is an exploded view of a watch in accordance with the invention according to a second embodiment.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

(8) A watch 100 according to one embodiment will now be described in the following making reference jointly to FIGS. 1, 2 and 3.

(9) The general principle of the invention is based on the use of a timepiece 100 comprising a watch case 10 formed by a middle 1 closed by a back 2 and a crystal 3, the middle 1 being equipped with horns 4, 4′ defining a space 40, 40′, or a connection area, for receiving a bracelet strand 5, said timepiece comprising a sole 6 arranged to rest against the back 2, the sole 6, the bracelet strand 5 and the space between the horns 40, 40′ comprising shaped elements arranged to cooperate by interlocking when the middle 1, the sole 6 and the strand 5 are assembled.

(10) The middle 1 comprises, conventionally, at 6 o'clock and 12 o'clock a pair of horns 4 for fastening a strand of a bracelet strand.

(11) As illustrated in FIG. 2a, the space between the horns 40, 40′ comprises a first shaped element 41 having at least one element 410 that protrudes from the watch case, and has an oblique contact surface 412 arranged to cooperate with the sole 6. These protruding elements 410 may be comparable to a pair of inner horns for example.

(12) The protruding element 410 is inclined in relation to the horizontal plane of the case so that the bracelet strand adapts correctly to the curvature of the wrist of the wearer when the watch is worn.

(13) Advantageously, the sole 6 comprises a second shaped element 42, in accordance with the shape of the space between the horns 40, 40′, the second shaped element 42 comprising at least one cutout 420 arranged to receive the at least one element 410 protruding from the space between the horns when the sole is assembled against the back 2 of the middle 1.

(14) The sole 6 also comprises at least one bed 44 arranged to receive an end of the bracelet strand 5 during the assembly of the various elements, the wall 45 of the bed 44 having a shape complementary to that of the space 40, 40′ and of the at least one element 410.

(15) So as to provide secure assembly and prevent any detachment of the sole 6, the latter has holding studs 60 configured to cooperate with cavities 20 formed in the back 2, the studs also being used as markers for the correct positioning of the sole in relation to the middle. According to one variant of the invention, the holding studs 60 each have a hook at their free end and the cavities 20 each have a retention element cooperating with the hooks to ensure assembly by clipping. Once mounted, the sole contours the shapes of the middle 1 and fills the space between the horns 40, 40′. According to the materials selected, the holding studs 60 of the sole 6 may be optional, the stiffness and the frictions being sufficient to provide a good holding.

(16) Optionally, and according to the type of timepiece, the sole has an opening 61 to access the back of the watch case and change a battery for example. Obviously, the size of the opening may vary and have various uses, the person skilled in the art may provide an larger opening making it possible to observe a transparent back for example.

(17) It will also be noted in FIG. 3 that the sole 6 has, at the cutouts, a banking 421 arranged to cooperate with the element 410. To this end, the element 410 has a notch 411 cooperating with the banking 421, this assembly enabling both a correct positioning and a good holding of the sole 6 on the back 2 of the middle. Such an arrangement thus makes it possible to hide the space between the horns 40, 40′. It is also possible to eliminate the banking 421 and to assemble the sole 6 on the back 2 of the middle, the interlocking at the horns being sufficient to hold the whole assembled.

(18) According to a first embodiment, the bracelet strand 5 comprises at one of its ends, or the end arranged to be connected to the watch case at the horns, a third shaped element 43 having at least one space 50 arranged to cooperate with said at least one element 410 protruding from the space 40, 40′ between the horns, the material around the cutouts resting in the at least one bed 44.

(19) Advantageously, the shaped elements 41, 42 and 43 comprise through holes 7, the holes 7 being aligned with one another when the middle 1, the sole 6 and the strand 5 are assembled with one another, so as to form a channel 8 arranged to receive a bar 9 holding the middle 1, the sole 6 and the strand 5 assembled. The bar 9 acts as a locking element once in place and prevents the assembly from separating.

(20) According to a second embodiment, the sole 6 and the bracelet strand 5 form a single monolithic element, the assembly then comprising the second shaped element and the whole then fastening directly below the middle 1.

(21) The middle and the sole are made of an elastomer material or of plastic material such as polycarbonate, PMMA or MABS, by way of an injection moulding for example. The person skilled in the art would have no difficulty in using other materials such as metals or metal alloys, ceramic materials. According to the final result desired for the watch, the various watch elements may be of matte or shiny aspect, or also transparent or opaque, a combination of these aspects being possible.

(22) The bracelet strand is made of an elastomer-based material, of leather, of metal or ceramic.

(23) Obviously a combination of materials may be used for the various elements, for example a case made of metal material, a sole made of plastic material and a strand made of elastomer material may be used.

(24) It will also be noted that the various elements, namely, the middle, the sole and the bracelet strand, may have various colours depending on the model of the watch.

(25) The middle 1, sole 6 and strand 5 assembly makes it possible to obtain a plurality of customisable models depending on the colour and/or the aspect retained.

(26) The assembly of the watch is performed as follows.

(27) The operator mounts the sole 6 on the middle 1 by interlocking at the space between the horns 40, 40′ while making sure that the holding studs 60 are positioned opposite the cavities 20 of the back 2 of the middle 1.

(28) Subsequently, the operator places the bracelet strand so as to interlock the shaped elements 41, 42 and 43 and align the holes 7 of the latter. Finally, the bar 9 is introduced into the channel 8 formed by the holes to secure the whole.

(29) Thanks to these various aspects of the invention, we have a watch that is easy to assemble, enabling a large variety of models and that is easy to customise by the wearer.

(30) Of course, the present invention is not limited to the example illustrated and is susceptible to various variants and modifications that will become apparent to the person skilled in the art.