ADJUSTABLE LEVER OF A TOURBILLON MECHANISM AND A METHOD OF ADJUSTMENT

Abstract

An adjustable lever (100) of a tourbillon mechanism for stopping at least one tourbillon unit (200). The adjustable lever (100) includes at least one first member (110) configured to be actuated, at least one second member (120) configured to actuate at least one brake element (240) and at least one adjustment member (130) configured to adjust a position of the at least one second member (120) via a method of adjustment.

Claims

1. An adjustable lever (100) of a tourbillon mechanism for stopping at least one tourbillon unit (200); said adjustable lever (100) comprising at least one: a first member (110), said at least one first member (110) configured to be actuated; a second member (120), said at least one second member (120) configured to actuate at least one brake element (240); and an adjustment member (130), said at least one adjustment member (130) configured to adjust a position of said at least one second member (120) with respect to said at least one first member (110) between a first position (101) and a second position (102) and/or to adjust a position of said at least one first member (110) with respect to said at least one second member (120) between a first position (101) and a second position (102).

2. The adjustable lever (100) according to claim 1, comprising at least one axis of rotation (140) between said at least one first member (110) and said at least one second member (120), on said at least one first member (110) and/or on said at least one second member (120); said at least one first member (110) and/or said at least one second member (120) is or are mobile in rotation around said at least one axis of rotation (140).

3. The adjustable lever (100) according to claim 1, wherein said at least one adjustment member (130) is at least one first screw (130), preferably at least one first eccentric screw (130); said at least one first screw (130), preferably said at least one first eccentric screw (130) comprises a first head (131).

4. The adjustable lever (100) according to claim 1, comprising at least one first hole (121) and at least one fixation element (115) configured to cooperate with said at least one first hole (121) and to settle said at least one second member (120) with respect to said at least one first member (110) in an adjusted position (103) between said first position (101) and said second position (102) and/or to settle said at least one first member (110) with respect to said at least one second member (120) in an adjusted position (103) between said first position (101) and said second position (102).

5. The adjustable lever (100) according to claim 1, wherein said at least one first hole (121) comprises a first extremity (127) and a second extremity (128); in said first position (101), said at least one adjustment member (130) is closer from said first extremity (127) than said second extremity (128) and in said second position (102), said at least one adjustment member (130) is closer from said second extremity (128) than said first extremity (127).

6. The adjustable lever (100) according to claim 1, wherein said at least one first hole (121) is disposed on said at least one adjustment member (130), and preferably said at least one first hole (121) has an oblong shape.

7. The adjustable lever (100) according to claim 1, wherein at least one fixation element (115) comprises at least one second screw (111) and at least one second hole (112).

8. The adjustable lever (100) according to claim 1, wherein said at least one second member (120) comprises a receiving member (123), preferably a receiving slot (123), configured to receive said at least one adjustment member (130), preferably said first head (131).

9. The adjustable lever (100) according to claim 1, wherein said receiving member (123), preferably a receiving slot (123), is configured to receive said at least one adjustment member (130), preferably said first head (131).

10. The adjustable lever (100) according to claim 1, wherein said receiving member (123), preferably a receiving slot (123), is an open-end wrench (123), an open-ended spanner (123), U-shaped opening wrench (123) and/or an at least one adjustment member corresponding plug (123), preferably a first head corresponding plug (123).

11. The adjustable lever (100) according to claim 1, wherein said adjustable lever (100) is a rack (100).

12. At least one tourbillon unit (200) comprising at least one adjustable lever (100) according to claim 1.

13. A method of adjustment for adjusting a force on at least one brake element (240) of a tourbillon mechanism; said method of adjustment comprising an: adjusting a position of at least one second member (120) with respect to at least one first member (110) between a first position (101) and a second position (102) and/or of a position of said at least one first member (110) with respect to said at least one second member (120) between a first position (101) and a second position (102) via at least one adjustment member (130).

14. The method of adjustment according to claim 13, which comprises a fixing said at least one first member (110) to said at least one second member (120) and/or said at least one second member (120) to said at least one first member (110) after said Adjustment of a position.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The foregoing and other purposes, features, aspects and advantages of the invention will become apparent from the following detailed description of the embodiments, given by way of illustration and not limitation with reference to the accompanying drawings, in which:

[0035] FIGS. 1 and 2 illustrate movement comprises at least one tourbillon block 271 and at least one tourbillon unit 200

[0036] FIG. 3 represents an exploded of at least one adjustable lever 100 according to an embodiment;

[0037] FIG. 4 illustrates said at least one adjustable lever 100 actuated via at least one winding-mechanism 290 according to an embodiment; and,

[0038] FIGS. 5 and 6 represent at least one adjustment member 130 adjusting at least one second member 120 with respect to at least one first member 110 between a first position 101 and a second position 102 according to an embodiment.

DESCRIPTION OF THE INVENTION

[0039] In FIGS. 1 and 2 a movement is illustrated. The movement comprises at least one tourbillon block 271 and at least one tourbillon unit 200. Said at least one tourbillon unit 200 comprises at least one balance wheel 220 rotationally mounted on at least one carriage 250. Said at least one balance wheel 220 may be in engagement with an escape wheel (not represented). Said at least one carriage 250 is further provided with at least one seconds hand 210 configured to illustrate the seconds on a dial for example.

[0040] There is further provided at least one clutch 277 rotationally coupled or rotationally fixed to said at least one carriage 250, and at least one transfer element 245. Said at least one transfer element 245 is axially displaceable or guided in or by at least one clutch 277.

[0041] When said at least one clutch 277 is actuated, the respective movement of said at least one clutch 277 is transferred to said at least one transfer element 245.

[0042] In this way, said at least one transfer element 245 is configured to urge against at least one brake element 240 thus leading to an axial displacement or axial deformation of said at least one brake element 240. In this way, said at least one brake element 240 which is arranged on said at least one carriage 250 is axially displaceable or deformable from a released position or a released state into a braking position or braking state in which said at least one brake element 240 axially engages with an outer rim of said at least one balance wheel 220. In this way, said at least one brake element 240 is configured to apply a braking torque or brake force to said at least one balance wheel 220 and to stop or to hinder said at least one balance wheel 220 from rotating or oscillating.

[0043] The standstill of at least one at least one tourbillon unit 200 may be critical since the brake force on said at least one at least one tourbillon unit 200 should be measured out such as the balance wheel 220 may be blocked when a setting device of the timepiece may be actuated without to be too loose which may cause

[0044] Indeed, if the force applied on balance wheel 220 may be too loose, said at least one tourbillon unit 200 may move further and damage the mechanism and if the force applied may be too strong, said at least one tourbillon unit 200 may be displaced, the mechanism may be damage as well.

[0045] In order to achieve the standstill of a balance wheel 220, said at least one at least one tourbillon unit 200, according one aspect of the invention, may comprise at least one brake element 240 and at least one adjustable lever 100, preferably at least one rack 100, of a tourbillon mechanism for stopping said at least one at least one tourbillon unit 200.

[0046] As depicted in FIG. 1, said at least one adjustable lever 100 may comprise at least one first member 110 configured to be actuated via at least one pull-out piece 295, at least one second member 120 configured to actuate said at least one brake element 240, and at least one adjustment member 130.

[0047] Said at least one adjustment member 130 may be configured to adjust a position of said at least one second member 120 with respect to said at least one first member 110 between a first position 101 and a second position 102 and/or to adjust a position of said at least one first member 110 with respect to said at least one second member 120 between a first position 101 and a second position 102. Since, said at least one second member 120 may be adjusted with respect to said at least one first member 110 or vice versa, the brake force of said at least one brake element 240 may be measured out.

[0048] This adjustment may be achieved thanks at least one method of adjustment allowing said adjustment of said force said on at least one brake element 240 of a tourbillon mechanism. Said method of adjustment may comprise an adjustment of a position of said at least one second member 120 with respect to said at least one first member 110 between a first position 101 and a second position 102 and/or of a position of said at least one first member 110 with respect to said at least one second member 120 between a first position 101 and a second position 102 via at least one adjustment member 130, as illustrated in FIGS. 3 and 4.

[0049] In particularly, in order to achieve said adjustment between said at least one second member 120 and said at least one first member 110, said adjustable lever 100 may comprise at least one axis of rotation 140 between said at least one first member 110 and said at least one second member 120 or said adjustable lever 100 may comprise at least one axis of rotation 140 on said at least one first member 110 and/or on said at least one second member 120, as depicted in FIG. 1, and said at least one first member 110 and/or said at least one second member 120 may be mobile in rotation around said at least one axis of rotation 140.

[0050] Thus, this configuration allows adjusting the brake force of said at least one brake element 240 when said adjustable lever 100 rotates around said at least one axis of rotation 140.

[0051] This adjustment is realized through said at least one adjustment member 130, which may be at least one first screw 130, preferably at least one first eccentric screw 130, having a first head 131.

[0052] As shown in FIGS. 1 and 3-4, said at least one second member 120 may comprise a receiving member 123, preferably a receiving slot 123, configured to receive said at least one adjustment member 130, preferably said first head 131. More specifically, said receiving member 123, preferably said receiving slot 123, may be an open-end wrench 123, an open-ended spanner 123, U-shaped opening wrench 123 and/or an at least one adjustment member corresponding plug 123, preferably a first head corresponding plug 123.

[0053] As depicted in FIG. 2, when at least one winding-mechanism 290 is pulled out, said at least one pull-out piece 295 meshes said at least one first member 110. In order to adjust the brake force of said at least one brake element 240, said at least one adjustment member 130 may be turned and/or screwed in and/or on said at least one first member 110, said first head 131 may move in said receiving member 123 and may displace said at least one second member 120 with respect to said at least one first member 110, for example, until said brake force is measured out, rather said at least one brake element 240 brings to standstill said at least one at least one tourbillon unit 200.

[0054] This two extreme positions, e.g. said first position 101 and said second position 102, are illustrated in FIG. 3. Indeed, said first head 131 may have at least one groove oriented at +π/4 for said second position 102 and said at least one groove may be oriented at −π/4 for said first position 101 for example.

[0055] When the brake force of said at least one brake element 240 is adjusted, said method of adjustment may comprise a fixing of said at least one first member 110 to said at least one second member 120 and/or said at least one second member 120 to said at least one first member 110.

[0056] Indeed, said adjustable lever 100 may comprise at least one first hole 121 and at least one fixation element 115, comprising at least one second screw 111 and at least one second hole 112. Said at least one fixation element 115, configured to cooperate with said at least one first hole 121, may be configured to settle said at least one second member 120 with respect to said at least one first member 110 in an adjusted position 103 between said first position 101 and said second position 102 by fixing of said at least one second member 120 to said at least one first member 110. Alternatively, it may be possible to settle said at least one first member 110 with respect to said at least one second member 120 in an adjusted position 103 between said first position 101 and said second position 102 by fixing said at least one first member 110 to said at least one second member 120.

[0057] In FIG. 3, said at least one first hole 121, preferably having an oblong shape, may be disposed on said at least one second member 120 and said at least one first hole 121 may comprise a first extremity 127 and a second extremity 128, and in said first position 101, said at least one adjustment member 130 may be closer from said first extremity 127 than said second extremity 128 and in said second position 102, said at least one adjustment member 130 may be closer from said second extremity 128 than said first extremity 127.