摘要:
A method of measuring accuracy of a watch including a visual display device, including: storing a first instant, at which the display is in a first display position corresponding to a first image, with a corresponding time reference source; determining a first display value for the first image and stored in a storage in correlation with the first instant; storing, after a determined time interval, a second instant, at which the display is in a second display position corresponding to a second image, with the corresponding source; determining a second display value for the second image and stored in the storage in correlation with the second instant; and calculating displaying on a viewing device the variation in rate of the display.
摘要:
An assembly of an axially extending member, made of a first material, in an aperture of a part, made of a second material having no plastic domain. The part includes pierced holes forming an elastic deformation mechanism distributed around the aperture thereof. Further, the member includes an elastically and plastically deformed, radially flared portion that radially grips a wall of the part surrounding the aperture by stressing the elastic deformation mechanism, so as to secure the assembly in a manner that is not destructive for the part. The assembly can be used in the field of timepieces.
摘要:
The device for pivoting an arbour (11) in a timepiece, includes two pivots (12, 12′; 32) each forming one end of the arbour and two bearings for receiving the two pivots. Each of the pivots includes an approximately cylindrical portion (19, 19′; 39) and a convex rounded portion (13, 13′; 33) that extends the approximately cylindrical portion and gradually decreases in the direction of the end. Each of the bearings includes a pivoting structure (25; 35) held in place elastically, which includes an approximately cylindrical passage traversed by said approximately cylindrical portion (19, 19′; 39) of one of the pivots. The pivoting structure also includes a bearing surface against which the end of said pivot will abut. The pivoting device is characterized in that the pivoting structure of each of the bearings includes an aperture (16, 16′; 36; 46) that has a portion of inverted triangular or trapezoidal profile (16, 16′; 38; 46), and in that the convex rounded portion (13, 13′; 33) of one of the two pivots is for abutting against said inclined inner wall so that the arbour (11) is held axially between the inclined walls of the apertures of the two bearings.
摘要:
The invention concerns an escapement (1) for a timepiece comprising an anchor (2) articulated on a stem (3) and co-operating with an escapement mobile (4) articulated on an axis (5), said mobile comprising a plurality of teeth (8; 15, 16) uniformly spaced around said mobile, said anchor including an entry pallet (6) and an exit pallet (7) arranged to receive alternately an impulse from one of the teeth borne by the mobile and for acting as rest plane for said tooth. The invention is characterized in that the escapement mobile (4) comprises first and second integral and coaxial wheels (13, 14) including each the same number of teeth (15, 16), in that the entry and exit pallets (6, 7) co-operate respectively with the first and second wheels (13, 14) and in that the peripheral radius (R1) of the first wheel (13) is greater than the peripheral radius (R2) of the second wheel (14).
摘要:
The timepiece escapement includes first (3) and second (4) impulse pallet stones secured to the balance (2) directly cooperating with the teeth of the escape wheel set (1) and a brake lever (5) periodically driven by the balance, the brake lever being provided with first (6) and second (7) locking pallet stones arranged for cooperating with the teeth of the escape wheel set (1).
摘要:
The mobile element includes a central rigid zone (2) provided with arms (6) extending radially from the central zone (2) towards a peripheral zone including teeth (8). The arms (6) are flexible to allow a small tangential and/or radial movement of the teeth (8) in order to absorb shocks. The invention is characterized in that the arms (6) are curved and bend gradually towards an orientation tangential to the rotation of the mobile element, in that the thickness of the arms gradually decreases, and finally, in that the ends of the arms form the teeth.
摘要:
The process comprises the following steps:a) a first element (3) or a plurality of said first elements (3) is/are machined in a first silicon wafer (1) keeping said elements (3) joined together via material bridges (5); b) step a) is repeated with a second silicon wafer (2) in order to machine a second element (4), differing in shape from that of the first element (3), or a plurality of said second elements (4); c) the first and second elements (3, 4) or the first and second wafers (1, 2) are applied, face to face, with the aid of positioning means (6, 7); d) the assembly formed in step c) undergoes oxidation; and e) the parts (10) are separated form the wafers (1, 2). Micromechanical timepiece parts obtained according to the process.
摘要:
The resonator (1) for a timepiece results from coupling a first, low frequency resonator (2) with a second, higher frequency resonator (3). The first resonator (2) has a first balance (4) associated with a first balance spring (5). The second resonator (3) has a second balance (6) associated with a second balance spring (7). A third balance spring is arranged between the first (4) and second (6) balances to couple said first (2) and second (3) resonators.
摘要:
The housing (6) of the bearing block (1), locks the peripheral ring (11) of a spring (10) with axial and radial deformation further comprising a substantially annular rigid central support (13) which cooperates with a cap (23), fitted by means of lugs (25) to the outside of the central support (13), to hold the pierced stone (4) and the endstone (5). The resilient part (12) of the spring (10) is for example formed of bent arms.
摘要:
The mobile element includes a central rigid zone (2) provided with arms (6) extending radially from the central zone (2) towards a peripheral zone including teeth (8). The arms (6) are flexible to allow a small tangential and/or radial movement of the teeth (8) in order to absorb shocks. The invention is characterized in that the arms (6) are curved and bend gradually towards an orientation tangential to the rotation of the mobile element, in that the thickness of the arms gradually decreases, and finally, in that the ends of the arms form the teeth.