Double Watch-Surface Disassembly Mechanism
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Solution Overview
Problem
Conventional watches require multiple tools for disassembly and obstructed visibility during repair, making maintenance and style changes cumbersome and costly, as well as complicating time zone adjustments.
Innovation Solution
A watch design with a double watch-surface and a method for disassembling it, featuring a rotating decorative cover, an adjusting screw, and a snapping ring mechanism that allows for simpler tool usage and clear visibility, enabling easy replacement and adjustment of watch surfaces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If conventional watch disassembly methods are used, then the back cover can be opened for repair, but multiple hand tools are required and the watchband blocks the vision of the repair area
Solution Approach 1:
The watch is divided into separate functional modules: the first watch-surface (21) containing hour markers and hands, the second watch-surface (22) containing the date window, and the movement structure (50). This segmentation allows independent access and replacement of each module without requiring complete disassembly of the entire watch, eliminating the need for multiple tools and providing clear visibility of repair areas.
Solution Approach 2:
The first and second watch-surfaces are extracted as removable components from the casing (10). The connecting sleeve (63) with suspension columns (C) allows the watch-surfaces to be detached and reattached. This extraction enables repair specialists to directly access and view the repair area without obstruction from the watchband, while requiring only simple tools for disassembly.
2Adaptability or versatility
If conventional single watch-surface design is used, then the structure is simple, but style changes require buying different watches and time zone adjustments are disturbing
Solution Approach 1:
The dual watch-surface design provides multiple functions: the first watch-surface (21) displays local time while the second watch-surface (22) displays home time or date information. This multi-functionality allows users to adapt to different time zones without changing watches, and to change styles by replacing different first watch-surface designs while keeping the same movement structure.
Solution Approach 2:
The first watch-surface (21) is nested within the second watch-surface (22), which is in turn nested within the casing (10). The connecting sleeve (63) with suspension columns (C) provides a nested connection mechanism that allows easy insertion and removal of the watch-surfaces. This nested structure enables style changes by simply replacing the outer first watch-surface while maintaining the inner movement structure.
3Ease of operation
If conventional disassembly methods are used, then the back cover can be removed, but the process is cumbersome and carries risk of damage
Solution Approach 1:
The watch-surfaces are designed with self-servicing features: the H-shaped snapping member (33) with elastic deformation capability allows automatic engagement and disengagement through simple rotational motion of the decorative cover (D). The suspension columns (C) with corresponding grooves provide automatic alignment during assembly. This self-service mechanism reduces operational complexity and minimizes damage risk by eliminating complex tool-based disassembly procedures.
Solution Approach 2:
The H-shaped snapping member (33) utilizes elastic deformation parameter changes to achieve engagement and disengagement. When the decorative cover (D) is rotated, the snapping member deforms elastically to release the snapping ring (4), allowing the watch-surface to be removed. This parameter change approach transforms a complex mechanical disassembly process into a simple rotational operation, improving ease of operation while maintaining reliability through controlled elastic deformation.
Data Source
AI summary
A method for disassembling first and second watch-surfaces of a watch includes the steps of removing a decorative cover from the watch; rotating an adjusting screw to move an H-shaped snapping member toward a casing so that the H-shaped snapping member abuts against the adjusting screw; rotating a snapping ring so that an engaging protrusion does not overlap a pressing protrusion and the snapping ring can be removed from the casing; opening the watch; using a tool to press against a platform of the connecting sleeve; rotating the main screw to remove the connecting sleeve; removing the first watch-surface from the casing; removing first and second positioning rings and suspension columns; turning the casing to remove the snapping ring; opening the watch; using the tool to press against the platform; rotating the main screw to remove the connecting sleeve; and removing the second watch-surface from the casing.