Electronic Pen Connector Housing for Compact Axial Alignment
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Solution Overview
Problem
Conventional electronic pens with connectors are bulky and complicated in configuration, making miniaturization difficult and increasing the load on the circuit board due to misalignment of the pen's axial center and connector center.
Innovation Solution
The electronic pen features a connector housing with a substantially triangular cross section, aligning the axial center of the connector substrate with the electronic pen body, allowing for a simplified configuration and reduced bulk while maintaining structural integrity under pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a connector portion including housing and shell portion is mounted on the electronic pen, then the connector can be properly protected and positioned, but the electronic pen becomes difficult to miniaturize and the configuration becomes complicated
Solution Approach 1:
The patent merges the connector housing and shell portion into a single integrated component. The housing simultaneously provides structural support, protection for the connector terminals, and positioning features for the plug insertion, eliminating the need for separate housing and shell components. This integration simplifies the overall connector portion configuration while maintaining adequate protection and positioning functions.
Solution Approach 2:
The housing of the connector portion is designed to perform multiple functions: it protects the connector terminals, positions the plug during insertion and removal, provides structural support for the connector assembly, and integrates with the electronic pen housing. By making the housing multi-functional, the patent reduces the number of separate components needed, thereby simplifying the configuration while maintaining reliability.
2Adaptability or versatility
If the connector portion is mounted on the electronic pen, then data and power transmission functions are added, but the electronic pen configuration becomes complicated and miniaturization becomes difficult
Solution Approach 1:
The connector portion is nested within the electronic pen housing structure. The connector housing is positioned within the existing pen housing, utilizing the available internal space efficiently. The connector terminals are arranged in a compact configuration within the housing, allowing the connector assembly to fit within the pen's overall volume without requiring additional external space, thus enabling miniaturization while adding USB transmission functionality.
3Ease of operation
If the axial center of the connector substrate does not coincide with the axial center of the electronic pen body, then the connector can be positioned for proper plug insertion, but the load on the circuit board increases due to misalignment
Solution Approach 1:
The connector substrate is designed with an asymmetric layout where the physical position of the connector terminals provides proper alignment for plug insertion, while the electrical connection points on the circuit board are positioned to maintain symmetry with the pen's axial center. This asymmetric design allows the connector housing to guide plug insertion from one side while the circuit board connections remain centrally aligned, distributing mechanical loads evenly and preventing excessive stress on specific areas of the circuit board.
Data Source
AI summary
Provided is an electronic pen including an electronic pen body portion, an electronic pen housing being a cylindrical body housing the electronic pen body portion, a connector portion including a connector substrate, and a terminal portion including a base portion raised from the connector substrate in a direction crossing an axial direction and a contact portion extended to a back end side from a position separated from the connector substrate on a back end surface of the base portion, and a connector housing being a cylindrical body housing the connector portion and connected to a back end side of the electronic pen housing. A cross section of the connector housing in a direction orthogonal to the axial direction is substantially triangular. An axial center of the connector substrate coincides with an axial center of the electronic pen body portion when the connector housing is attached to the electronic pen housing.