Flexible Clasp Mechanism for Wearable Bands
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wearable device bands, such as wristwatch bands, often require resizing by adding or removing links, and their clasps can be rigid, making it difficult to attach or detach the band without applying undue stress, which may damage the clasp or links.
Innovation Solution
The band incorporates a clasp mechanism with a flexible connecting arm made of nickel-titanium or beta-titanium alloy that can bend and twist without deforming, allowing for easy attachment and detachment, and a quick-release link system with a spring member and button member for adjustable sizing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a rigid clasp mechanism is used to secure the band, then the attachment is strong and stable, but it becomes difficult to attach or detach the band without applying undue stress that may damage the clasp or links
Solution Approach 1:
The clasp mechanism transitions from a rigid static structure to a dynamic system with flexible connecting arms that can bend and rotate. The flexible arm allows the clasp to adapt its shape during attachment and detachment operations, reducing stress concentrations while maintaining secure holding strength when closed.
Solution Approach 2:
The connecting arm is designed with flexible geometry and material properties (nickel-titanium or beta-titanium alloy) that allow it to bend and deform elastically. This flexibility enables the clasp to flex during attachment/detachment without permanent deformation, solving the contradiction between strength and ease of operation.
2Adaptability or versatility
If conventional resizing methods are used by adding or removing links, then the band can be adjusted to fit different wrist sizes, but the process is complex and requires tools
Solution Approach 1:
The band is divided into modular link segments that can be independently added or removed. Each link is a discrete unit with standardized coupling interfaces, allowing the band to be resized by simply adding or removing individual links without complex adjustments.
Solution Approach 2:
The quick-release link mechanism allows users to resize the band themselves without requiring special tools or professional service. The spring member and button member create a self-contained release system that operates with simple manual pressure.
3Ease of operation
If a quick-release link system with spring member is used, then the band can be easily resized and detached, but the structure becomes more complex with additional components
Solution Approach 1:
The spring member, button member, and link coupling mechanism are merged into a single integrated assembly. The spring member is disposed within the link structure itself, and the button member operates directly on the spring to create a compact quick-release system that doesn't add significant external complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution enables easy resizing of the band and secure attachment/detachment without damaging the band or clasp, providing a flexible and secure fit for wearable devices.
Implementation Method 1
a spring member disposed in the space and comprising a first face configured to engage the first wall and a second face configured to partially engage the second wall
Implementation Method 2
a flexible connecting arm made of nickel-titanium or beta-titanium alloy that can bend and twist without deforming
Data Source
AI summary
A band configured to couple a device to a body of a user is disclosed. The band includes a first link comprising a recess defined in a body of the first link, a leaf spring positioned in the recess and comprising a tongue portion protruding from the leaf spring, and a second link coupled to the first link and comprising first and second lip portions extending away from a body of the second link and separated from one another by a gap. The tongue portion is positioned in the gap between the first and second lip portions, and the first and second lip portions engage the leaf spring to retain the second link to the first link.