Watch Cuff with Outward-Flexing Arms to Prevent Breakage
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Solution Overview
Problem
Conventional watch bands are unattractive, prone to wear and tear, and have stress points that can lead to breakage, compromising the durability and security of the watch.
Innovation Solution
A watch cuff with rigid or semi-rigid arms and connectors that flex outward to allow passage of the wrist, securing the watch without breaking, made from materials like thermoplastics, polycarbonates, nylon, carbon fiber, steel, or precious metals, with attachment points and prongs for secure coupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional watch bands are made from flexible material to allow wrist movement, then ease of operation is improved, but strength and durability deteriorate due to material fatigue and stress points
Solution Approach 1:
The watch band is divided into multiple rigid arms (first arm, second arm, third arm) connected by flexible connectors. Each arm can be independently positioned and secured, allowing the wrist to move through the opening while the rigid segments maintain structural strength and eliminate continuous stress points along the band.
Solution Approach 2:
The watch band combines rigid materials (metal, plastic, or composite) for the arms with flexible materials (rubber, silicone, or elastic polymer) for the connectors. This composite structure provides both the strength of rigid materials and the flexibility needed for wrist movement, resolving the contradiction between strength and ease of operation.
2Ease of operation
If conventional watch bands are made thin to allow wrist movement, then ease of operation is improved, but reliability deteriorates due to visible cracks and breakage
Solution Approach 1:
The band is segmented into multiple thick, rigid arms that provide structural integrity and resistance to cracking. The flexible connectors are positioned only where needed for movement, while the main bearing arms remain thick and robust to prevent breakage and visible cracks during normal wear.
Solution Approach 2:
The flexible connectors act as thin film elements that allow wrist insertion while the thick rigid arms provide the bulk and durability needed to prevent cracking and breakage. The thin flexible portions are isolated to specific connection points rather than being distributed throughout the entire band.
3Ease of manufacture
If conventional watch bands use continuous flexible material, then ease of manufacture is improved, but strength deteriorates due to stress points and fatigue
Solution Approach 1:
The continuous flexible material is replaced with discrete rigid arms connected by flexible connectors. Each rigid arm is a separate component that can be manufactured independently and then assembled, which actually simplifies manufacturing while distributing stress across multiple rigid segments rather than concentrating it in a continuous flexible material.
Solution Approach 2:
The combination of rigid and flexible materials creates a composite structure where rigid arms handle stress bearing and flexible connectors handle movement. This composite approach is easier to manufacture than continuous flexible material because each component can be optimized and produced separately, then assembled through standardized connectors.
4Adaptability or versatility
If conventional watch bands are made from thin flexible material, then adaptability is improved for different wrist sizes, but strength deteriorates making the watch vulnerable to dropping
Solution Approach 1:
The segmented design with multiple rigid arms and flexible connectors allows the band to adapt to different wrist sizes through the flexible connector movement while maintaining the strength of rigid arms to secure the watch. The opening size and connector flexibility can be adjusted to fit different wrists without compromising the structural strength of individual arms.
Solution Approach 2:
The composite structure combines the adaptability of flexible materials in the connectors with the strength of rigid materials in the arms. This allows the watch band to accommodate different wrist sizes while providing sufficient strength to prevent the watch from being dropped or lost.
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
Enhances durability and security by eliminating stress points, providing a resilient and visually appealing alternative to conventional bands that maintains the watch's integrity.
Implementation Method 1
the first and second arms are configured to laterally flex outward to allow an object to pass through the opening without breaking. In certain embodiments, the first and second arms return to a pre-flexed shape once the object passes through the opening, securing the watch cuff to the object
Data Source
AI summary
A cuff for a watch includes a pair of arcuately shaped arms and a pair of connectors, each detachably connected to a different side of the body of a watch. Each arm is detachably coupled to a different connector. The pair of arms cooperate to define an opening opposite the body of the watch when the arms are coupled to the connectors and the connectors are coupled to the body of the watch. The arms laterally flex outward to allow an object to pass through the opening without breaking.