Mechanical wristwatch escapement mechanism

Abstract

The invention discloses an escapement mechanism of a mechanical watch, which comprises a double disc, a roller jewel, an escapement lever and an escapement wheel, wherein, the roller jewel is fixed on the double disc and is pressed with a pendulum shaft and a balance wheel as a whole body; the escapement lever comprises an escapement lever body, a lever body, a lever washer and a lever position nail; two arm of the escapement lever body are in a shape of 'L', a lever head of which is fixedly provided with the lever position nail; the lever position nail is fixed on the lever head of the lever body; the left lever body and the right lever body of the lever body are fixedly provided with an inlet lever and an outlet lever; the escapement wheel and an escapement gear shaft are riveted as a whole body; the escapement lever body, the lever body, the lever washer, and the lever shaft of a lamination escapement lever are directionally pressed as a whole body with a coaxial rotation by the lever position nail. The escapement mechanism of the mechanical watch has the beneficial effects that: the dual positioning of centering and directioning is used for accurately positioning the escapement lever body and the lever body ; the lever washer can effectively prevent the mutual interference of the lever body and the escapement body; the escapement lever with superposition setting reduces plane space occupied by the escapement mechanism, thus being more convenient for the plane arrangement and meeting design requirements on varying specifications.

Description

technical field [0001] The invention relates to an escapement mechanism of a mechanical watch, in particular to a pallet fork in the escapement mechanism of a mechanical watch. Background technique [0002] In a mechanical watch, the escapement mechanism regularly transmits the energy provided by the driving system to the balance spring system to maintain the vibration of the system without attenuation; secondly, it transmits the vibration frequency of the balance spring system to the indicating device to measure time the goal of. Therefore, the escapement mechanism directly affects the travel time accuracy of the mechanical watch. [0003] figure 1 It is a schematic diagram of the planar structure of the existing escapement mechanism, figure 2 It is a schematic diagram of the axial structure of the existing escapement mechanism. [0004] Such as figure 1 and figure 2 As shown, the escapement mechanism includes double disc 1, disc nail 2, pallet fork 3, fork head nai...

AI Technical Summary

Problems solved by technology

The escapement mechanism of this kind of mechanical watch has the following disadvantages. Since the rotation centers of the double disc 1, the pallet fork 3 and the escape wheel 7 on the splint (not shown) are arranged on a straight line, this arrangement takes up larger floor space

It is more suitable when the size of the mechanical watch is large or there is no special requirement, but the existing escapement mechanism is difficult to meet the design requirements when the size of the watch is small or in a limited space

In the Chinese patent 200520119832.1, a pallet fork suitable for the escapement mechanism used by the tourbillon is disclosed. According to the structure of the tourbillon, the pallet fork is divided into upper and lower layers at corresponding angles and tightly fitted with the fork shaft. , but this stacking design has the following disadvantages: the relative position between the pallet fork pin and the fork tile will be affected after stacking only through the central positioning connection during stacking, and the design requirements cannot be met; body interference, the fork body is longer than the fork shaft to the edge of the fork body so that the plane space occupied is relatively large

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