Rotatable Shell Stylus for Ergonomic Storage
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Solution Overview
Problem
Portable computing devices, such as smartphones and tablets, are too compact to accommodate a full-size stylus, leading to reduced stylus diameter for storage, which compromises comfort and causes hand cramping during extended use.
Innovation Solution
A stylus design featuring a housing with a rotatable shell that changes from a compact to a wider configuration, allowing the stylus to adapt from a narrow to a symmetrical or circular cross-section for comfort during use, while maintaining a compact form for storage, using mechanisms like pins, hinges, and magnets for locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the stylus diameter is reduced to accommodate storage in portable devices, then the stylus can be stored in the device compartment, but comfort and usability are compromised causing hand cramping
Solution Approach 1:
The stylus incorporates a rotatable shell that can change the cross-sectional shape dynamically. When rotated to a first position, the shell creates a compact configuration for storage. When rotated to a second position, the shell expands to create a wider, more comfortable configuration for writing, thus resolving the contradiction between compact storage and comfortable usage.
Solution Approach 2:
The stylus is divided into a housing and a rotatable shell as separate segments. The shell can rotate independently relative to the housing, allowing the stylus to transition between compact and expanded configurations. This segmentation enables the stylus to achieve both small storage volume and comfortable writing dimensions.
2Shape
If the stylus diameter is reduced for compact storage, then the stylus fits in the device, but the cross-section becomes asymmetrical and uncomfortable for extended use
Solution Approach 1:
The rotatable shell enables dynamic reconfiguration of the stylus cross-section. In the first position, the cross-section is compact and may be asymmetrical for storage. In the second position, the shell rotates to create a symmetrical, wider cross-section that provides ergonomic comfort for extended writing use.
Solution Approach 2:
The invention adds rotational movement as another dimension to the stylus design. By rotating the shell around the longitudinal axis, the cross-sectional shape changes from a compact configuration to an expanded symmetrical configuration, providing ergonomic comfort without increasing the overall length of the stylus.
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 stylus design effectively reduces dimensions by 30-40% for storage, maintaining comfort and usability by expanding to a wider configuration for writing, accommodating electronic components and providing ergonomic handling.
Implementation Method 1
a rotatable shell (150) that changes from a compact to a wider configuration
Implementation Method 2
rotatably connected to the housing
Implementation Method 3
using mechanisms like pins, hinges, and magnets for locking
Data Source
Figure 1A~1B
Figure 2A~2B
Figure 3A~3B
AI summary
A stylus includes a cylindrical shaped housing and a shell. The shell is rotatably connected to the housing. A cross-sectional area of the housing has a first dimension along a first axis and a second dimension along a second axis, the first axis perpendicular to the second axis. The first dimension is smaller than the second dimension. A cross-sectional area including both the shell and the housing has a third dimension along the first axis that is substantially the same as the first dimension while the shell is in a first position and substantially the same as the second dimension while the shell is in a second position.