Smartwatch Crown Mechanism for Detachable Case Assembly
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Solution Overview
Problem
Current smartwatch structures have complex and difficult procedures for disassembling and assembling the internal mechanism and case, making it hard for users to replace the case.
Innovation Solution
A smartwatch design that includes a detachable case connected to an outer side of the internal mechanism case, utilizing a crown with a stem and knob that can move axially and rotate to engage with a guide rod, allowing for easy disassembly and assembly of the case without complex crown disassembly processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the crown is integrated with the case and internal mechanism, then the structural stability is improved, but the ease of case replacement deteriorates
Solution Approach 1:
The crown is divided into separate functional components: a crown body that remains integrated with the case for structural stability, and a crown stem that can be detached to enable case replacement. This segmentation allows the case to be easily removed from the internal mechanism while maintaining the structural integrity of the crown assembly.
Solution Approach 2:
The crown stem is extracted as a separate detachable component from the integrated crown structure. This extraction enables independent removal of the crown stem without affecting the case or internal mechanism, facilitating easy case replacement while preserving the stable integration between the case and internal mechanism.
2Ease of operation
If the crown disassembly process is simplified, then the ease of operation is improved, but the reliability of connection deteriorates
Solution Approach 1:
The crown stem is designed with dynamic connectivity to the guide rod, allowing it to move between engaged and disengaged states. This dynamic design enables simple disassembly operations while maintaining reliable connection during normal operation through the movable engagement mechanism.
Solution Approach 2:
The guide rod acts as an intermediary component between the crown stem and the internal mechanism. This intermediary structure facilitates reliable force transmission and connection during operation, while allowing for simple disassembly by enabling the crown stem to detach from the guide rod without complex procedures.
3Ease of operation
If the case is detachably connected to the internal mechanism, then the ease of case replacement is improved, but the device complexity increases
Solution Approach 1:
The detachable connection structure serves multiple functions: it enables easy case replacement, maintains structural stability during operation, and provides a standardized interface for crown assembly. This multi-functionality reduces the need for separate complex mechanisms, thereby limiting the increase in device complexity while achieving ease of case replacement.
Data Source
AI summary
A smartwatch includes case, a crown, a guide rod, and an internal mechanism case. The case is detachably coupled to an outer side of the internal mechanism case. A through hole is disposed on the case. The guide rod is disposed on the internal mechanism case and is opposite the through hole. A stem of the crown extends through the through hole. A knob of the crown is located on a side of the through hole that is distal from the guide rod. The stem is configured such that when the knob is subject to pressure, the stem approaches the guide rod, and when the knob is subject to pulling force, the stem moves away from the guide rod, and when the knob is subject to rotation force, the stem rotates and drives the guide rod to rotate.