Device for opening a watch case including a back cover fixed in the middle by an interlock

Abstract

To provide a tool for opening a watch case, in particular a tool for separating a back cover of a watch from a middle portion, simply and quickly, without risk of damaging the back cover or the middle portion.SOLUTION: A device 10 for opening a watch case including a back cover fixed to a middle portion by interlocking includes: a fitting 11 fixed to a frame 12 and intended to hold the watch case in a predetermined position; at least one carriage 13, 14 movable in parallel relative to the frame in a X direction, the carriage including a tool holder 130, 140 to which a knife is fixed; and a control element 16 designed to be actuated by a user. The control element is kinematically connected to the carriage with a transmission member configured so that the carriage is moved in parallel toward the fitting or in a direction opposite to the fitting when the control element is actuated.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to tools in the field of microtechnology, in particular in the field of watchmaking.

[0002] More particularly, the present invention relates to a device for opening a watch case including a back cover secured in a middle by an interlock. [Background technology]

[0003] For example, during the assembly process of a watch, there are many occasions when the watch case needs to be opened, especially for adjusting the watch movement or cleaning the inside of the case, or after carrying out a waterproof test. Of course, the watch case also needs to be opened during after-sales service.

[0004] This is done by removing the back from the middle part, which can be secured by a screwed back, a bayonet connection, or by interlocking the backs.

[0005] In the case of a back cover fixed to the intermediate part by an interlock, the back cover includes a recess on its periphery designed to receive the tip of a tool for removing the back cover from the intermediate part. In particular, after engaging the tip of the tool in the recess, the watchmaker uses the tool to press the intermediate part to remove the back cover from it.

[0006] This operation is relatively difficult and requires great care from the watchmaker performing such an operation: in particular, the tool runs the risk of damaging or at least scratching the back or middle part if it is accidentally caught in an uncontrolled movement.

[0007] If the back or middle part is scratched or damaged, it will have to be polished or replaced, a cost which, of course, cannot be borne by the owner of the watch. Summary of the Invention [Problem to be solved by the invention]

[0008] The object of the invention is to provide a tool for opening a watch case, in particular for separating the back of a watch from its middle part simply and quickly, without the risk of damaging the back or the middle part. [Means for solving the problem]

[0009] The present invention overcomes the above mentioned drawbacks and for this purpose relates to a device for opening a watch case comprising a back cover fixed in the middle by an interlock. The device comprises a mounting fixed to a frame and intended to hold the watch case in place, and at least one carriage translatable in the X direction relative to the frame. The carriage comprises a tool holder on which a knife is fixed. The device further comprises a control element designed to be actuated by a user, the control element being kinematically connected to the carriage by a transmission member configured such that, when the control element is actuated, the carriage translates towards or away from the mounting.

[0010] In particular embodiments, the invention may further comprise one or more of the following features, alone or in any combination technically possible:

[0011] In a particular embodiment, the apparatus comprises two carriages on either side of the fixture that are translatable in the X direction relative to the frame, and the transmission member is configured to translate the carriages in opposite directions when the control element is actuated.

[0012] In a particular embodiment, the apparatus comprises a module for adjusting the minimum distance between the two tool holders, the module being configured to be able to vary the amplitude of the stroke of each carriage.

[0013] In a particular embodiment, the module for adjusting the minimum distance between two tool holders comprises two stops, each arranged between one of the tool holders and the fixture, and a positioning shaft to which an operating member is fixed, said positioning shaft cooperating with each stop by means of oppositely threaded portions in a helical connection.

[0014] In certain embodiments, the fixture comprises a module for adjusting a linear position of the fixture configured to translate the fixture in a Z direction orthogonal to the X direction.

[0015] In a particular embodiment, the module for adjusting the linear position of the fixture is formed by a fixture body arranged so as to be translatable within the fixture structure, the fixture body including a threaded portion cooperating with the operating member in a helical connection.

[0016] In certain embodiments, the fixture can rotate about a Z direction orthogonal to the X direction and includes a module for adjusting the angular position of the fixture configured to release or lock the rotation of the fixture about the Z direction.

[0017] In certain embodiments, the module for adjusting the angular position of the fixture includes an indexing member adapted to block progression of the fixture at a reference angular position.

[0018] In a particular embodiment, the module for adjusting the angular position of the mounting fixture comprises a ring housed in a recess in the mounting fixture, said ring intended to hold the watch case in a predetermined position, capable of translation around the Z direction and fixed in translation by a blocking element.

[0019] In a particular embodiment, the module for adjusting the angular position of the fixture includes a resilient positioning member fixed to the fixture, the resilient positioning member designed to function in compression and to cooperate with a recess in the ring when the ring reaches a reference angular position.

[0020] In a particular embodiment, at least the carriage includes a module for adjusting a position of a knife supported by the carriage, said adjustment module configured to move the knife relative to the carriage in at least one direction parallel to the X direction.

[0021] In a particular embodiment, the transmission member includes a cam which is rotationally integral with the control element, said cam having two cam tracks with respective cooperating followers, said followers being fixed to each carriage respectively.

[0022] In a particular embodiment, the two cam tracks are mirror images of each other with a center of symmetry aligned with the axis of rotation of the cam.

[0023] In a particular embodiment, the apparatus comprises a module for adjusting the angular position of the control element relative to a frame centered in a Y direction orthogonal to the X direction.

[0024] In certain embodiments, the cam is kinematically connected to the control element via a module for adjusting the angular position of the control element.

[0025] In a particular embodiment, the module for adjusting the angular position of the control element includes an index wheel that is rotationally integral with the cam, and an index element adapted to cooperate with the index wheel in one of several angular positions to rotate the control element and the index wheel together.

[0026] In a particular embodiment, the frame includes two flanges located on either side of the fixture, said flanges including an opening through which a translational guide rod included in one carriage, referred to as the "first carriage", extends, and the tool holder of the first carriage is translationally integral with the guide rod.

[0027] In certain embodiments, one carriage, referred to as the "second carriage," is configured to be slidably guided by a guide rod. [Brief description of the drawings]

[0028] Other characteristics and advantages of the invention will become apparent from the following detailed description, given in a non-limiting manner as an example, with reference to the accompanying drawings, in which: [Figure 1] 1 shows a perspective view of a device for opening a watch case according to a preferred exemplary embodiment of the present invention; [Diagram 2] 2 shows another perspective view of the device of FIG. 1. [Diagram 3] 2 shows a cross-sectional view of the device of FIG. 1 along section A. [Figure 4] FIG. 2 shows a side view of the device of FIG. [Diagram 5] 2 shows a cross-sectional view of the device of FIG. 1 along section B. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0029] The present invention relates to a device 10 for opening a watch case, in particular a case comprising a back cover assembled in the middle by means of an interlock, said back cover including on its periphery, in a manner known to the person skilled in the art, a recess intended to receive the tip of a tool, in particular a knife.

[0030] As shown in Figures 1 to 5, in a preferred exemplary embodiment of the invention, the device 10 includes a fitting 11 intended to hold the case in place so that it can be opened by separating the back cover from the middle part, as will be explained in detail below.

[0031] The device 10 comprises a frame 12 to which the mounting fixture 11 is fixed and at least one carriage 13 or 14 translatable relative to the frame 12 in the X direction in which the mounting fixture 11 is arranged. The carriage 13 or 14 comprises a tool holder 130 or 140 to which a knife is fixed, the free end of which is intended to be inserted into a recess in the back cover of a watch fixed by the mounting fixture 11 in order to open the watch case.

[0032] The device 10 further includes a control element 16 designed to be actuated by a user. As described in more detail below, the control element 16 is kinematically connected to the carriage 13 or 14 via a transmission member configured such that, when the control element 16 is actuated, the carriage 13 or 14 moves toward or away from the fixture 11 depending on the direction in which the control element 16 is actuated.

[0033] It goes without saying that the embodiment of the invention in which the device 10 comprises a single carriage 13 or 14 is particularly suited to watch backs which comprise a single recess intended to receive a knife.

[0034] In the embodiment of the invention described in the following text and shown in the figures, the device 10 comprises two carriages 13 and 14. It is therefore intended in particular to open a case whose back cover comprises two recesses around its periphery. Naturally, the elements described below are common to both embodiments of the invention, except for those relating to the second carriage 13 or 14 or connected to the latter.

[0035] As can be seen, the two carriages 13 and 14 can be translated in the X direction relative to the frame 12, on either side of the fixture 11. In other words, in the reference coordinate system relative to the fixture 11, the carriages 13 and 14 are diametrically opposed to each other. Needless to say, in this exemplary embodiment of the invention, the recesses in the back cover are also diametrically opposed to each other. The transmission members are configured such that, when the control element 16 is actuated, the carriages 13 and 14 move in opposite directions. In this way, the knives supported by the tool holders 130 and 140 are simultaneously inserted into their respective recesses and exert opposite forces of equal strength on the case.

[0036] In a preferred exemplary embodiment of the invention, the control element 16 is formed by a lever designed to be pivoted by a user to move the tool holders 130 and 140 towards or away from each other.

[0037] Alternatively, the control element 16 can be considered to be formed by any gripping member that can be rotated and / or translated by a user.

[0038] Preferably, the transmission member comprises a cam 17 which is integral in rotation with the control element 16. Preferably, the rotation axes of the control element 16 and the cam 17 coincide. These axes are shown in the Y direction in FIG. 1, which is perpendicular to the X direction. As can be seen in the cross section in FIG. 3, the cam 17 is fixed to the transmission shaft 18 and is integral in rotation with it, thanks to the square cross section of the transmission shaft 18 and the opening of the cam 17 in which the latter engages. Naturally, the transmission shaft 18 and the cam 17 can be prevented from rotating by any suitable means, such as a pin, a key, a complementary polygonal cross section of the transmission shaft 18 and the opening of the cam 17.

[0039] The cam 17 comprises two cam tracks 170 with each cooperating with a follower 131 or 141, said followers 131 and 141 being fixed to each carriage 13 and 14, respectively. In a preferred exemplary embodiment, each cam track 17 is formed by a through opening extending in a curved direction, in this embodiment corresponding to the arc of a semicircle, as shown in FIG.

[0040] In order for carriages 13 and 14 to move at the same speed, the cam tracks 17 are mirror images of each other according to a symmetry, the centre of symmetry being aligned with the axis of rotation of cam 17. This symmetry can be seen in FIG.

[0041] Preferably, the followers 131 and 141 are in the form of fingers engaged through respective cam tracks 170, as shown in Figure 3. In the exemplary embodiment shown in the figures, each carriage 13, 14 includes a fixed plate 132, 142 with two parallel opposing walls between which the followers 131, 141 extend, each follower 131, 141 being fixed by each of its opposite ends to one of the walls. Thus, the cam 17 is always located within the space formed between the walls of each plate 132, 142, as seen in Figures 1 and 2.

[0042] The transmission shaft 18 is pivotally mounted to a first flange 120 of the frame 12, described in more detail below, and has plates 132, 142 disposed on either side thereof.

[0043] Advantageously, the device 10 can include a module for adjusting the angular position of the control element 16 relative to the frame 12 about the Y direction. Such an adjustment module is shown in Figures 1, 2 and 4 and kinematically connects the control element 16 to a cam 17 for transmitting forces generated by actuation of the control element 16 to the carriages 13 and 14 to cause their respective movements.

[0044] In particular, the module for adjusting the angular position of the control element 16 includes an index wheel 160 which is rotationally integral with the cam 17 via a transmission shaft 18 which is rotationally integral with the index wheel 160. The transmission shaft 18 and the index wheel 160 may be prevented from rotation by any suitable means such as pins, keys, or complementary polygonal cross-sections between the transmission shaft 18 and the opening in the index wheel 160 which the transmission shaft 18 engages.

[0045] The module for adjusting the angular position of the control element 16 also includes an indexing element 161 adapted to cooperate with the indexing wheel 160 in one of several angular positions of the indexing wheel 160 to fix the rotation of the control element 16 and the indexing wheel 160.

[0046] 1 and 4, the indexing element 161 is fixed to the control element 16 and adapted to removably engage in one of a number of peripheral holes of the indexing wheel 160, the holes being evenly distributed around the axis of rotation of said indexing wheel 160, i.e. in the Y direction, with it being understood that the greater the number of holes, the greater the number of different angular positions that the control element 16 can occupy. In the present embodiment, the indexing element 161 is formed by an indexing finger supported by an arm fixed to the control element 16 and arranged rotatably relative to the indexing wheel 160.

[0047] Advantageously, the device 10 can also include a module for adjusting the minimum distance between the two tool holders 130 and 140, configured to be able to modify the amplitude of the movement of each of the carriages 13 and 14.

[0048] In detail, as can be seen in Fig. 3, the module for adjusting the minimum distance between the two tool holders 130 and 140 includes two stops 133 and 143, each arranged between one of the tool holders 130 and 140 and the fixture 11, and a positioning shaft 21 to which the operating member 22 is fixed. The positioning shaft 21 cooperates with each of the stops 133 and 143 by means of oppositely threaded portions in a helical connection. In this way, the stops 133 and 143 can be moved in opposite directions when the operating member 22 is actuated. In the exemplary embodiment of the invention shown in the figures, the positioning shaft 21 is rotatably engaged through a second flange 121 of the frame 12, which is substantially parallel to the first flange 120.

[0049] 1 to 4, the operating member 22 comprises a knurled roller fixed to one end of the positioning shaft 21. The operating member 22 may also comprise an adjustment nut 220 constituting a stop for the knurled roller in order to fix the position of the stops 133, 143 while allowing fine adjustment. Such an adjustment nut 220 rotatably engages the positioning shaft 21 and cooperates with the second flange 121 by a helical connection.

[0050] As can be gathered from the above and the figures, the module for adjusting the minimum distance between the two tool holders 130, 140 makes it possible to change the position of the travel ends of the control element 16.

[0051] Both the first and second flanges 120, 121 are fixed to a base 123 of a frame 12 that supports the entire apparatus 10. The first and second flanges 120, 121 are also located on either side of the fixture 11, as inferred from the text above and shown in the figures. The first and second flanges 120 and 121 include an opening through which a translation guide rod 134 provided on one of the carriages, referred to as the "first carriage 13", passes.

[0052] The tool holder 130 of the first carriage 13 is integral in translation with the guide rod 134. In a preferred exemplary embodiment of the invention, the guide rods 134 are arranged parallel to each other on either side of the fixture 11, the fixture 11 being interposed between said guide rods 134. This arrangement allows for an even distribution of the forces acting on the guide rods 134 when opening the watch case.

[0053] Advantageously, the plate 132 of the first carriage 13 connects two guide rods 134 at one of their free ends fixedly, ie without any degree of freedom, as shown in Figures 2 to 4 .

[0054] In the illustrated example, the second carriage 14 is configured to be slidably guided by a guide rod 134. The design of the device 10 is therefore simplified and relatively robust.

[0055] Preferably, at least one of the first or second carriages 13 or 14 includes in its tool holder 130 or 140 a module for adjusting the position of the knife it supports. More specifically, the adjustment module is configured to move the knife relative to the first or second carriage 13 or 14 in at least one direction parallel to the X direction.

[0056] As can be seen in FIG. 3, the adjustment module can include a slide 150 with a housing designed to receive a knife, and an adjustment screw 151 that can act on the slide 150 to move the slide 150 toward or away from the fixture 11.

[0057] In a preferred exemplary embodiment of the invention, fixture 11 comprises a module for adjusting the linear position of fixture 11 configured to drive translation of fixture 11 in a Z direction orthogonal to the X direction, as shown in FIG. 1.

[0058] In detail, the module for adjusting the linear position of the fixture 11 is formed by a fixture body arranged so as to be translatable within the structure 116 of the fixture 11. As shown in the cross-sectional views of Figures 3 and 5, the fixture body comprises a support 110 designed to hold the case in a predetermined position, the support 110 being connected to a guide portion 111 fitted with a degree of freedom of translation into a tubular portion of the structure 116 of the fixture 11.

[0059] The guide portion 111 is extended by a threaded portion 112 which cooperates, directly or indirectly, in a helical connection with an operating member 113. In a preferred embodiment of the invention, the threaded portion 112 cooperates directly with the threads of a wheel which is, for example, splined on its periphery for ease of handling.

[0060] Advantageously, as can be seen in Figures 3 and 5, the guide portion 111 has a through hole 114, preferably of oval shape, through which passes a positioning shaft 21 of the module for adjusting the minimum distance between the two tool holders 130 and 140, it being understood here that the positioning shaft 21 extends at each end of the through hole 114 when the fixture 11 occupies either of its extreme linear positions.

[0061] Advantageously, the fixture 11 is rotatably movable about the Z direction and may comprise a module for adjusting the angular position of the fixture 11. This adjustment module is configured to release the rotation of the fixture 11 about the Z direction or to fix the rotation of the fixture 11. In particular, the module for adjusting the angular position of the fixture 11 may allow the rotation of the fixture 11 in any angular position that the fixture 11 can occupy.

[0062] For this purpose, in the preferred exemplary embodiment shown in the figures, the module for adjusting the angular position of the mounting 11 comprises a ring 115 with a form of rotation accommodated in a recess of the mounting 11, in particular of the support 110, so that the axis of rotation of the ring 115 coincides with the Z direction. The ring 115 is designed to receive the watch case and hold it in place, for example by means of a pin. The ring 115 is fixed against translational movement by a blocking element fixed to the support 110. More specifically, as shown in figures 3 and 5, the ring 115 comprises a central opening in which a stud of the support 110 extending in the Z direction engages. The blocking element can be formed by a washer 117 fixed by a screw to the central stud so as to cover a part of the ring 115. More specifically, in the example shown in the figures, the washer 117 extends radially beyond the stud so as to cover the inner peripheral lip of the ring 115. In other words, the ring 115 comprises an inner peripheral lip forming a shoulder with which the washer 117 cooperates to prevent the ring 115 from translating.

[0063] The module for adjusting the angular position of the fixture 11 may include a rotation blocking element capable of allowing or blocking a rotation of the ring 115 around the Z direction. This blocking element is preferably formed by an indexing member 119 designed to block the progression of the fixture 11 in at least one predetermined angular position, called the "reference position". More specifically, the indexing member 119 may be in the form of a finger that is translatable between a position shown in FIG. 5 in which it engages with a radial hole in the support 110 and in the radial hole in the ring 115 and prevents the rotation of the ring 115 relative to the support 110, and a release position in which it is withdrawn from the radial hole in the ring 115 and thus releases the rotation of the ring 115. The indexing member 119 may be restrained in the engagement position of the radial hole in the ring 115 by an elastic member (not shown).

[0064] Advantageously, the module for adjusting the angular position of the mounting 11 may comprise an elastic positioning member 118 fixed to the mounting 11, in particular to the support 110, intended to function in compression and to cooperate with a recess in the ring 115 in order to provide an indication to the user when the latter has reached a reference angular position. More particularly, the elastic positioning member 118 may be formed by a ball-spring pad. During the rotation of the ring 115 about the Z direction, the elastic positioning member 118 cooperates with a recess in said ring 115 when the latter has reached a reference position, which on the one hand generates a tactile feedback for the user and, on the other hand, requires overcoming a resistance to remove the elastic positioning member 118 from the recess in said ring 115 in order to continue the rotation of said ring 115.

[0065] Once the reference position is identified, the ring 115 can be locked in this position by the indexing member 119 .

[0066] The mounting 11 can thus quickly and easily adopt a predetermined angular position while at the same time being guaranteed to remain fixed in this position.

[0067] More generally, it should be noted that the implementations and embodiments described above are described as non-limiting examples, and therefore other variations are possible.

Claims

1. A device (10) for opening a watch case including a back cover fixed in its middle by an interlock, said device (10) comprising a mounting (11) fixed to a frame (12) and intended to hold the watch case in place, and at least one carriage (13, 14) translatable in the X direction relative to said frame (12), said carriage (13, 14) comprising a tool holder (130, 140) to which a knife is fixed, said device (10) further comprising a control element (16) designed to be actuated by a user, said control element (16) being kinematically connected to said carriage (13, 14) by a transmission member configured such that, when said control element (16) is actuated, said carriage (13, 14) translates towards said mounting (11) or away from said mounting (11), the device (10) comprises two carriages (13, 14) on either side of the fixture (11) which are translatable in the X direction relative to the frame (12), the transmission member being configured such that the carriages (13, 14) translate in opposite directions when the control element (16) is actuated; said device (10) comprising a module for adjusting the minimum distance between the two tool holders (130, 140), said module being adapted to be able to vary the amplitude of the stroke of each carriage (13, 14); The device (10) includes a module for adjusting the minimum distance between the two tool holders (130, 140), which comprises two stops (133, 143), each arranged between one of the tool holders (130, 140) and the mounting fixture (11), and a positioning shaft (21) to which an operating member (22) is fixed, said positioning shaft (21) cooperating with each stop (133, 143) by means of oppositely threaded portions through a helical connection.

2. 2. The apparatus (10) according to claim 1, wherein the fixture (11) comprises a module for adjusting a linear position of the fixture (11) configured to drive a translational movement of the fixture (11) in a Z direction perpendicular to the X direction.

3. 3. The device (10) according to claim 2, wherein the module for adjusting the linear position of the fixture (11) is formed by a fixture body arranged so as to be translatable within the structure (116) of the fixture (11), the fixture body including a threaded portion cooperating with an operating member (113) in a helical connection.

4. A device (10) for opening a watch case including a back cover fixed in its middle part by an interlock, said device (10) comprising a mounting (11) fixed to a frame (12) and intended to hold the watch case in a predetermined position, and at least one carriage (13, 14) movable in parallel in the X direction relative to said frame (12), said carriage (13, 14) comprising a tool holder (130, 140) to which a knife is fixed, said device (10) further comprising a control element (16) designed to be actuated by a user, said control element (16) being kinematically connected to said carriage (13, 14) by a transmission member configured such that, when said control element (16) is actuated, said carriage (13, 14) is moved in parallel towards said mounting (11) or away from said mounting (11), The fixture (11) can rotate about a Z direction perpendicular to the X direction, and the device (10) comprises a module for adjusting the angular position of the fixture (11) configured to release the rotation of the fixture (11) about the Z direction or to fix the rotation of the fixture (11).

5. 5. The device (10) according to claim 4, wherein the module for adjusting the angular position of the fixture (11) comprises an indexing member (119) adapted to block the progression of the fixture (11) at a reference angular position.

6. 6. The device (10) according to claim 5, wherein the module for adjusting the angular position of the mounting (11) comprises a ring (115) accommodated in a recess of the mounting (11), the ring (115) intended to hold the watch case in a predetermined position, being translatable about the Z direction and being fixed in translation by a blocking element.

7. 7. The device (10) according to claim 6, wherein the module for adjusting the angular position of the mounting (11) comprises an elastic positioning member (118) fixed to the mounting (11), the elastic positioning member (118) being designed to function in a compressed state and to cooperate with a recess in the ring (115) when the ring (115) reaches the reference angular position.

8. 2. The apparatus (10) according to claim 1, wherein the carriage (13, 14) includes a module for adjusting a position of a knife supported by the carriage (13, 14), the module being configured to move the knife relative to the carriage (13, 14) in at least one direction parallel to an X direction.

9. A device (10) for opening a watch case including a back cover fixed in its middle by an interlock, said device (10) comprising a mounting (11) fixed to a frame (12) and intended to hold the watch case in a predetermined position, and at least one carriage (13, 14) movable in translation in the X direction relative to said frame (12), said carriage (13, 14) comprising a tool holder (130, 140) to which a knife is fixed, said device (10) further comprising a control element (16) designed to be actuated by a user, said control element (16) being kinematically connected to said carriage (13, 14) by a transmission member configured such that, when said control element (16) is actuated, said carriage (13, 14) is moved in translation towards said mounting (11) or away from said mounting (11), the device (10) comprises two carriages (13, 14) on either side of the fixture (11) which are translatable in the X direction relative to the frame (12), the transmission member being configured such that the carriages (13, 14) translate in opposite directions when the control element (16) is actuated; The transmission member includes a cam (17) which is rotationally integral with the control element (16), the cam (17) having two cam tracks (17) each cooperating with a follower (131, 141), the followers (131, 141) being fixed to each carriage (13, 14), respectively, of the device (10).

10. 10. The device (10) according to claim 9, wherein the two cam tracks (17) are mirror images of each other with a center of symmetry aligned with the axis of rotation of the cam (17).

11. A device (10) for opening a watch case including a back cover fixed in its middle by an interlock, said device (10) comprising a mounting (11) fixed to a frame (12) and intended to hold the watch case in a predetermined position, and at least one carriage (13, 14) movable in translation in the X direction relative to said frame (12), said carriage (13, 14) comprising a tool holder (130, 140) to which a knife is fixed, said device (10) further comprising a control element (16) designed to be actuated by a user, said control element (16) being kinematically connected to said carriage (13, 14) by a transmission member configured such that, when said control element (16) is actuated, said carriage (13, 14) is moved in translation towards said mounting (11) or away from said mounting (11), The apparatus (10) comprises a module for adjusting an angular position of the control element (16) relative to the frame (12) about a Y direction orthogonal to the X direction.

12. 11. The device (10) according to claim 9 or 10, further comprising a module for adjusting an angular position of the control element (16) relative to the frame (12) about a Y direction perpendicular to the X direction, and the cam (17) is kinematically connected to the control element (16) via a module for adjusting the angular position of the control element (16).

13. 13. The device (10) according to claim 12, wherein the module for adjusting the angular position of the control element (16) comprises an indexing wheel (160) which is rotationally integral with the cam (17) and an indexing element (161) adapted to cooperate with the indexing wheel (160) in one of several angular positions to make the control element (16) and the indexing wheel (160) rotationally integral.

14. A device (10) for opening a watch case including a back cover fixed in its middle by an interlock, said device (10) comprising a mounting (11) fixed to a frame (12) and intended to hold the watch case in a predetermined position, and at least one carriage (13, 14) movable in translation in the X direction relative to said frame (12), said carriage (13, 14) comprising a tool holder (130, 140) to which a knife is fixed, said device (10) further comprising a control element (16) designed to be actuated by a user, said control element (16) being kinematically connected to said carriage (13, 14) by a transmission member configured such that, when said control element (16) is actuated, said carriage (13, 14) is moved in translation towards said mounting (11) or away from said mounting (11), the device (10) comprises two carriages (13, 14) on either side of the fixture (11) which are translatable in the X direction relative to the frame (12), the transmission member being configured such that the carriages (13, 14) translate in opposite directions when the control element (16) is actuated; The apparatus (10), wherein the frame (12) includes two flanges (120, 121) arranged on either side of the fixture (11), the flanges (120, 121) include an opening through which a translation guide rod (134) included in one of the carriages, referred to as the "first carriage (13)", passes, and a tool holder (130) of the first carriage (13) is translationally integral with the translation guide rod (134).

15. 15. The apparatus (10) of claim 14, wherein one of the carriages, referred to as the "second carriage (14)", is configured to be slidably guided by the translation guide rod (134).

Images