Timepiece escapement with improved lubrication performance

By designing chamfered sections with different geometric orientations on the escape wheel teeth, the lubrication problem of the escapement mechanism was solved, improving the stability and lifespan of the watch escapement mechanism while reducing processing costs.

CN122260746APending Publication Date: 2026-06-23ETA SA MFG HORLOGERE SUISSE
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Patent Information

Application Number
CN202511885850.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-12-20
Filing Date
2025-12-15
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

In watches, the lubrication of the escapement mechanism is difficult to guarantee throughout its entire service life, especially the effective lubrication of the surfaces of components involved in timing, such as the balance wheel bearing, escape fork and escape fork tip, and escape wheel teeth.

Method used

The escape wheel's teeth are designed with at least one chamfered portion for each tooth. The chamfered portions have different geometric orientations to improve the distribution and retention of lubricant, including chamfered portions with different geometries to avoid continuous wear.

Benefits of technology

By improving lubrication performance, the long-term stability and lifespan of the escapement mechanism can be increased, and processing costs can be reduced.

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Abstract

The invention relates to a timepiece escapement (100) comprising at least one escapement wheel (1), the teeth (2) of which extend on both sides along a median plane (PM) and which comprises at least two teeth (2) provided with at least one corner cut (20) connected to the impact surface (4) of the teeth, wherein the chamfers (20) on two different teeth (2) have different spatial geometric orientations with respect to the respective impact surfaces (4) on the teeth provided with the chamfers (20). The invention also relates to a timepiece, in particular a watch, comprising at least one escapement mechanism (100).
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