摘要:
The invention concerns an electromagnetic micromotor. Such micromotor includes a rotor constituted by a permanent magnet (52) partially embedded in an overmolding (54) formed from plastic material and which is provided with coupling means to a driven mechanism, a cage (60) including a bottom and a cover and intended to be engaged in the interior of a stator while the rotor is mounted for free rotation in the cage, and rotation guide means for the rotor (50) in the cage (60), such micromotor being characterized in that the rotation guide means are constituted, on the one hand, by two housings (74, 76) coaxially arranged in the overmolding (54), and on the other hand, by two spindles (78, 80) respectively integral with the bottom and the cover of the cage and intended to be accommodated respectively in one of these housings. Such micromotor is intended to equip timepiece movements of very small dimensions, for instance for ladies' watches.
摘要:
An arrangement for securing a timepiece dial having feet to a plate having bores for receiving the feet comprises attachment means each having a shank with a head, each shank being inserted in an additional bore in the plate substantially parallel to a bore receiving a foot. The head includes a collar, taking the form of a cutting edge, which partially surrounds the head and shank concentrically. The shank includes a cylindrical portion fitted to the diameter of the additional bore and another cylindrical portion of smaller diameter so that the shank may be more easily inserted in that bore.
摘要:
A hairspring and collet assembly for timepieces in which the collet has a base having an opening and a stud integral from the base in a direction parallel to the axis of the opening. The hairspring comprises an inner turn ending in a bend. The stud occupies a portion of the base extending between the opening and the periphery of the base. The non-deformed portion of the inner turn of the hairspring is secured to the stud and the bend extends freely away from the stud about the opening.
摘要:
The invention relates to a timepiece having a body or frame upon which an added element may be held, in a detachable manner. The invention also relates to a method of assembling this element on said body or frame.This timepiece is characterized in that the fixation means of the element added to the body or frame are formed by at least one rotating bolt (10) which is anchored permanently in the material itself of the body or frame (2) and is axially immobilized by said material.
摘要:
A balance spring support which is blanked out or stamped to a shape such as to embrace at least two faces of the outer end of the balance spring. A bond is used for securing said outer end of the balance spring to at least one of said faces. The support is detachable from the rest of the movement.
摘要:
The balance cock 35, the train wheel bridge 36 and the barrel bridge 37 are positioned with great precision and univocally on the baseplate 40 by means of an arrangement comprising a pair of feet 38 on every bridge, elongated holes 39 in the baseplate being engaged by feet 38, and securing screws 42, 44, 45 driven into the baseplate 40. Each screw has a conical face on its head and it passes through an opening 41, 46 of the bridge. The conical face of each screw engages the edge of the corresponding bridge opening at one point, thus exerting a thrust on the bridge in the direction of the arrows causing each one of the two feet 38 of a bridge to bear against a plane side wall of the corresponding hole 39 and one foot of each bridge to bear against the rounded end face of its hole.
摘要:
A retaining ring (17) which rests on the peripheral area of the dial (16), which is in turn bonded to a dial support (14). Several securing means (25) are on the one hand secured in the retaining ring (17) and on the other hand in a base element (13), such as an annular tool holder. This ensures a flat, smooth and lasting support of the dial (16) on the dial support (14). It also permits the simple assembly and dismantling of the unit composed of dial (16), dial support (14) and annular securing means (17) onto or from a base element (13).
摘要:
The timepiece comprises a base part (1) of plastic material, at least one element (2) secured to said base part and securing means for said element onto said base part which comprise a stud (34) driven at one of its ends (40) into a through hole (32) in the base part (1). The other end (12) of the stud (34) is fitted into a hole (10) of the element (2) and is upset against the latter so as to form a rivet. Finally the base part (1) is fashioned in a manner to permit access to the driven end (40) of the stud with a tool (A) furnishing a rigid support under the stud during the riveting operation on the other end (12) of the latter.
摘要:
The present invention concerns an electromagnetic motor of the type including a stator (4), a rotor (6) mounted for rotation relative to the stator, and a cage (2a, 2b, 2c, 2d, 2e) fixedly engaged relative to the stator, such cage including a bottom (18), a cover (22) and a body (20), the rotor being mounted for rotation in the interior of the cage, such motor being characterized in that the cage (2a, 2b, 2c, 2d, 2e) is formed from a synthetic material, while mechanical anchoring and positioning means are provided between the wall (P) of the cage body (20) and the stator (4) which leave the wall (P) free. This motor is intended for fitting out a timepiece in particular.
摘要:
A removable cover (10) for closing an opening (15) of a battery housing in an electronic watch having an armature (7) which is a flat metal disc with central and peripheral openings in which a molded cylindrical packing member (9) is anchored. The back (14) of the watch case is formed with a circular opening (15) with a particular profile suited to the diameter of the packing member (9). The latter, by radial compression, secures the cover and provides fluid-tightness. All of the operations for mass-producing the cover (10) and fitting it are carried out mechanically, without manual intervention, and are automated.