Wearable Wheel Guide Structure for Stable Low-Friction Rotation
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Solution Overview
Problem
Wearable electronic devices face challenges in stabilizing a rotatable wheel due to increased friction and difficulty in maintaining a horizontal state, especially when external impacts are applied, leading to assembly issues and potential deformation of the guide member.
Innovation Solution
A wearable electronic device design featuring a guide member with a first part extending between side walls and a second part inserted into recesses, providing support in both the rotation axis and radial directions, reducing assembly deviations and managing wear without deforming the wheel's shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the space between the guide member and the wheel is increased, then the wheel can rotate more smoothly, but the wheel becomes unstable and difficult to support when external impact is applied
Solution Approach 1:
The guide member is divided into multiple contact portions that are distributed around the wheel's rotation path. Each contact portion provides localized support and guidance, allowing the wheel to rotate smoothly while maintaining stability through distributed contact points rather than a single continuous contact surface.
Solution Approach 2:
Different portions of the guide member have different functional characteristics - some portions provide support while others provide guidance. The guide member's structure varies locally to optimize both rotation smoothness and stability, with specific geometric features designed for each functional requirement.
2Stability of the object's composition
If the contact area between the guide member and the wheel is increased, then the wheel is better supported, but frictional forces increase causing wearing and making it difficult to support a horizontal state
Solution Approach 1:
The contact area is segmented into multiple discrete contact points or small contact surfaces distributed around the wheel. This segmentation reduces the total continuous contact area, thereby reducing frictional forces and wear while still providing adequate support through the distributed contact points.
Solution Approach 2:
The guide member is designed to dynamically adapt to the wheel's position and motion. The contact portions can flex or adjust their contact pressure based on the wheel's rotation and external forces, maintaining optimal support with minimal friction and wear.
3Ease of manufacture
If the guide member structure is simplified, then assembly is easier, but assembly deviation increases and the guide member may move during assembly
Solution Approach 1:
The guide member is designed as a segmented structure with multiple independent contact portions that can be assembled separately or in modular fashion. This segmentation simplifies the assembly process while the precise geometric relationships between segments ensure proper positioning and minimize assembly deviation.
Solution Approach 2:
The guide member structure incorporates self-aligning features where the geometry of the contact portions automatically guides proper positioning during assembly. The design includes built-in positioning mechanisms that reduce the need for complex alignment procedures while maintaining high assembly precision.
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 design stabilizes the wheel by minimizing friction and maintaining a horizontal state, enhancing assembly precision and reducing wear, thus ensuring smooth operation and durability.
Implementation Method 1
When a contact area between the guide member and the wheel increases, frictional forces also increase
Implementation Method 2
a guide member at least partially contacting the main body and the wheel and that guides rotation of the wheel
Data Source
AI summary
An example wearable electronic device may include a main body including a first surface having an opening area formed therein, wherein a plurality of lateral walls, surrounding at least one part of the opening area, are formed in the peripheral area of the opening area; a display disposed inside the main body and which is viewable through the opening area; a wheel including a mounted part, which is at least partially mounted on the peripheral area, and an extension part which extends in the inward direction from the mounted part, wherein the wheel is formed in a ring shape extending in the circumferential direction with respect to a rotation axis of the wheel; and a guide member partially coming into contact with the main body and the wheel, respectively, and for guiding the rotation of the wheel. The guide member may include a first part having at least one portion thereof extending to a space between the plurality of lateral walls and a second part at least partially inserted to a first recess formed in each of the plurality of lateral walls.