A watch assembly with a watch and adjustment tool, a method for using the watch assembly, and a watch including a case.
A magnetic coupling system with a bipolar rotor and high-reduction-ratio gear train allows non-contact adjustments and energy recharge in wristwatches, addressing waterproofness and alignment issues in existing mechanical systems.
JP2026086350APending Publication Date: 2026-05-26THE SWATCH GRP RES & DEVELONMENT LTD
Patent Information
- Authority / Receiving Office
- JP · JP
- Patent Type
- Applications
- Current Assignee / Owner
- THE SWATCH GRP RES & DEVELONMENT LTD
- Filing Date
- 2025-10-20
- Publication Date
- 2026-05-26
AI Technical Summary
Technical Problem
Existing mechanical adjustment systems for wristwatches require mechanical elements to pass through the casing, compromising waterproofness, and adjustments made to the movement before casing often differ from the assembled watch, necessitating a non-contact and waterproof solution.
Method used
A magnetic coupling system using a bipolar rotor magnet within the watch movement and a high-reduction-ratio gear train, driven by an external bipolar magnet, allowing adjustments and energy recharge without mechanical penetration through the casing.
Benefits of technology
Enables precise, non-contact adjustments and energy recharge, maintaining waterproofness, and accommodating various watch types, including automatic and thick-case designs, with minimal mechanical interference.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure 2026086350000001_ABST
Abstract
The present invention provides a watch assembly equipped with means for transmitting torque or force through the watch casing using a magnetic coupler. [Solution] A watch assembly 2000 comprising a watch 1000 and an adjustment tool 200, wherein the adjustment tool 200 drives an external drive movable body 20 to pivot around an external axis DE, the external drive movable body 20 comprises an external multipole magnet 21, the external multipole magnet 21 engages with an internal multipole magnet provided in an internal control movable body 1 of the watch 1000, which pivots around a first axis D1 and meshes with the input of a reduction gear train 30 in order to perform adjustment. The output of the reduction gear train 30 meshes with an internal controlled movable body 1 that pivots within a case 10. The adjustment tool 200 comprises means for counting the number of rotations of the drive movable body 20 to accurately determine the degree of pivot of the internal controlled movable body 1, and / or means for determining and / or visualizing the angular position of the internal controlled movable body.
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