Instrument Eject System for Hybrid Tablet-Laptop Devices
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Solution Overview
Problem
Electronic devices with touchscreens often face inconvenience in accessing and storing styluses, leading to potential loss and contamination of the touchscreen when manually retrieved, especially in dual-function devices that require easy stylus availability as a tablet but not as a laptop.
Innovation Solution
A stylus ejection system with a cover rotationally coupled to a base via a hinge, featuring an ejection element and a retaining element that securely stores the stylus within the device, allowing convenient ejection when the device is converted from a laptop to a tablet configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stylus is stored in a compartment within the device, then the stylus is protected from loss and contamination, but manual removal is inconvenient and may transfer dirt to the touchscreen
Solution Approach 1:
The ejection element automatically ejects the stylus from the compartment when the cover is opened, eliminating the need for manual retrieval. The system serves itself by using the cover opening action to trigger stylus ejection, thereby protecting the touchscreen from contamination while providing convenient access.
Solution Approach 2:
The ejection element is pre-positioned to push the stylus outward before the user needs it. When the cover opens, the ejection element proactively expels the stylus from the compartment, preparing it for use before the user even reaches for it, thus solving both protection and accessibility issues.
2Ease of operation
If the stylus is easily accessible in tablet mode, then touchscreen input is convenient, but the stylus may be in sight and unnecessary in laptop mode
Solution Approach 1:
The stylus storage and ejection system is dynamic rather than static. The ejection element remains inactive during laptop mode but automatically activates when the cover opens into tablet mode. This dynamic behavior adapts the stylus accessibility to the device's operational context, providing convenience when needed without adding permanent complexity.
Solution Approach 2:
The system changes the state parameter of the stylus (from retained to ejected) based on the cover opening angle. When the cover opens beyond a certain angle indicating tablet mode, the retaining element releases and the ejection element propels the stylus outward. This parameter-based control simplifies the system by using the existing mechanical motion to dictate stylus behavior.
3Reliability
If a retaining mechanism is used to secure the stylus, then the stylus is securely stored, but the ejection mechanism becomes more complex
Solution Approach 1:
The retaining element and ejection element are merged into a single integrated mechanism. The same component that retains the stylus during storage (by blocking the ejection path) also facilitates ejection (by moving out of the way when the cover opens). This combination eliminates the need for separate retaining and ejection mechanisms, reducing overall system complexity while maintaining secure storage.
Solution Approach 2:
The ejection element serves multiple functions: it acts as a retaining barrier when the cover is closed, becomes an ejection force applicator when the cover opens, and returns to its retaining position when the cover closes again. This multi-functionality reduces the number of components needed while achieving both secure retention and automated ejection.
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
Enables quick and hygienic access to the stylus while preventing loss and contamination, maintaining the stylus's availability for touchscreen use without compromising the device's functionality as a laptop.
Implementation Method 1
an ejection element configured to impose an ejecting force on the instrument when the instrument is stored within the device
Implementation Method 2
the retaining element is configured to impose a retaining force on the instrument when the instrument is stored within the device, the retaining force being sufficient to overcome the ejecting force of the ejection element
Implementation Method 3
a cover rotationally coupled to a base via a hinge
Data Source
AI summary
An instrument eject system includes a device configured to store an instrument at a storage location within the device. A cover is rotationally coupled to a base via hinge. An ejection element is configured to impose an ejecting force on the instrument when the instrument is stored within the device. A retaining element is configured to retain the instrument within the device in a lock position of the retaining element and to release the instrument in a release position of the retaining element.