Rotating Bezel Locking Mechanism for Waterproof Wearable Housing
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Solution Overview
Problem
Existing wearable electronic devices lack the ability to easily change their appearance without altering their operation, as manufacturers typically use fixed housings that cannot be opened by users, limiting customization and fashion versatility.
Innovation Solution
A device with a 'twist and lock' system comprising a case, bezel, and crown stem that allows users to easily swap bezels and cases, providing a waterproof and customizable housing solution without visible screws or complex assembly, using a simple three-element design that can be manufactured from various materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed housing is used to protect sensitive electronics, then device reliability is improved, but user ability to change appearance is lost
Solution Approach 1:
The housing is divided into multiple separable components: a first housing portion, a second housing portion, and a bezel. These segments can be independently removed and reconfigured, allowing users to change appearance while maintaining protection of internal electronics through proper sealing interfaces between segments.
Solution Approach 2:
The housing transitions from a static fixed structure to a dynamic reconfigurable structure. Users can rotate the bezel between different positions (first rotational alignment with display, second rotational alignment covering display) and separate/reassemble housing portions, enabling appearance and functional changes while maintaining structural integrity.
2Adaptability or versatility
If a removable housing design is implemented to allow appearance changes, then adaptability is improved, but device complexity increases
Solution Approach 1:
The bezel is disposed around the display in a nested configuration, fitting within the housing structure. This nesting approach allows multiple functional elements (bezel, display, housing portions) to be integrated in a compact arrangement that simplifies the overall structure while enabling reconfigurability.
Solution Approach 2:
The bezel serves multiple functions: it provides structural support, frames the display, and acts as a rotatable component for appearance changes and functionality switching. This multi-functionality reduces the need for separate components, thereby simplifying the overall device structure despite its reconfigurable nature.
3Strength
If traditional screw-based assembly is used to secure housing components, then connection strength is improved, but ease of manufacture and assembly is reduced
Solution Approach 1:
The traditional screw-based mechanical fastening system is replaced with a friction-fit and rotational locking mechanism. The housing portions and bezel are designed with complementary geometries that create friction-based holding forces, eliminating the need for visible screws and complex assembly tools while maintaining connection strength.
Solution Approach 2:
The housing components are designed to self-align and self-secure through their geometric features. When assembled, the components naturally fit together with proper alignment features that guide placement and create secure connections without requiring external fastening elements or complex assembly procedures.
Data Source
AI summary
A device includes a case having a case sidewall defining a circular receiver having a receiving opening and a central axis. A device body, which is waterproof in one or more applications, includes a sidewall defining a receiving aperture. A crown stem includes a push button disposed within a duct of a threaded bushing and one or more O-rings disposed about the actuation stem to allow translation of the actuation stem in the duct while preventing liquids from passing through the duct. The crown stem inserts through the aperture in the case so that the threaded bushing can hermetically seal the receiving aperture when the device body is inserted into the circular receiver to prevent the liquids from entering the receiving aperture.