Active Capacitive Pen Magnetic Rail Cap for Secure Charging Port Cover
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Solution Overview
Problem
Existing active capacitive pens suffer from exposed charging ports that are aesthetically unpleasing, prone to having caps lost, and provide a poor pulling feel.
Innovation Solution
The capacitive pen incorporates a magnetic rail cap design that covers the charging port, utilizing a magnetic slide rail to enhance aesthetics and improve operational feel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If the charging port is simply covered, then the appearance is improved, but the cap is easily lost and the pulling feel is poor
Solution Approach 1:
The cap is designed to move dynamically along a magnetic slide rail, transitioning between retracted and extended positions. The magnetic attraction force dynamically adjusts to hold the cap at different positions, providing both aesthetic coverage and secure retention without the cap being easily lost.
Solution Approach 2:
The traditional mechanical snap-fit or friction-based cap retention mechanism is replaced with a magnetic field-based retention system. The magnet set embedded in the cap interacts with the magnetic slide rail to provide reliable holding force, improving both retention reliability and operational feel.
2Ease of operation
If a magnetic slide rail is adopted, then the operating feel is greatly improved, but the device complexity increases
Solution Approach 1:
The magnetic retention function is extracted from the main body structure and concentrated into a dedicated magnet set within the cap. This modular extraction allows the magnetic slide rail mechanism to operate independently with smooth motion, improving operating feel while containing the complexity increase to a specific subsystem rather than the entire device.
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 magnetic rail cap effectively conceals the charging port, preventing cap loss and enhancing the overall user experience by improving the operational feel.
Implementation Method 1
magnetic slide rail is adopted to greatly improve the operating feel
Implementation Method 2
there is induction coil on the said circuit board that is close to the main bracket
Data Source
AI summary
An active capacitive pen with magnetic rail cap includes a penholder, with a pen tip at one end and a seat at the other end away from the pen tip. The penholder houses multiple brackets and auxiliary brackets. A circuit board is securely positioned in the middle segment of the bracket to align with the auxiliary bracket. One end of the circuit board connects to the charging seat, and the other end connects to the battery trough, which is affixed to the primary bracket. An induction coil is situated on the circuit board, adjacent to the main bracket, with a magnet trough in close proximity. The magnet trough accommodates a magnet set. A touch induction needle is positioned on the circuit board, and an induction part corresponds to the touch induction needle's location. A shielding layer surrounds both the main bracket and auxiliary bracket.