Capacitive Stylus Detachable Eraser Latch Mechanism
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Solution Overview
Problem
Existing capacitive styluses lack a convenient and efficient method for erasing input content on touch devices, limiting user flexibility and correction capabilities.
Innovation Solution
A capacitive stylus with a detachable eraser that includes a pen housing and an eraser with a compressible latch, elastic shrapnels, and an erasing circuit, allowing for easy assembly and disassembly, enabling the transmission of erasing signals through a contact electrode and emission electrode for effective erasing functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If an eraser is integrated into the capacitive stylus, then erasing function is improved, but device complexity increases
Solution Approach 1:
The eraser is designed as a detachable component that can be separated from the pen housing, allowing the erasing function to be added or removed based on user needs. This segmentation reduces the permanent complexity of the device while maintaining versatility when the eraser is attached.
Solution Approach 2:
The eraser assembly includes a rotating latch mechanism that allows dynamic attachment and detachment. The latch can rotate between locked and unlocked positions, enabling the eraser to be dynamically connected or disconnected from the pen housing, thus adjusting device complexity based on usage requirements.
2Ease of repair
If the eraser is made detachable, then ease of repair and maintenance is improved, but device complexity increases
Solution Approach 1:
By dividing the stylus into separable components (pen housing and eraser), the design enables easy replacement of the eraser when worn or damaged, improving maintainability without requiring complex repair tools or procedures.
Solution Approach 2:
The eraser can be completely extracted from the pen housing through the latch mechanism, allowing users to replace it independently without disassembling other parts of the stylus. This extraction capability simplifies maintenance while the latch mechanism provides a straightforward attachment method.
3Reliability
If the latch mechanism is added for eraser attachment, then reliability of connection is improved, but ease of operation decreases
Solution Approach 1:
The latch mechanism incorporates elastic shrapnels that automatically engage with corresponding structures on the pen housing when the eraser is inserted. This self-service feature provides reliable connection through automatic mechanical engagement, reducing the need for complex manual adjustment while maintaining connection stability.
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 convenient and efficient erasing on touch devices by allowing users to easily assemble and disassemble the eraser for erasing functions, enhancing user experience and flexibility in correcting input content.
Implementation Method 1
the plurality of elastic shrapnels are respectively in contact with the plurality of contacts
Implementation Method 2
the contact electrode is in contact with the battery or electrode
Implementation Method 3
The outer surface of the eraser includes a compressible latch
Data Source
AI summary
This invention discloses a capacitive stylus including a pen housing and a detachable eraser. The pen housing comprises a rear end section and a thinning section with a thinner wall thickness than that of the rear end section. A compressible latch is disposed at the outer surface of the eraser. The rear end section includes an axial groove. By pushing the latch to pass through the axial groove into the thinning section and rotating the latch within the thinning section, the pen housing is combined with the eraser.