Rechargeable Stylus Headset Socket Charging Mechanism
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Solution Overview
Problem
Existing rechargeable styluses face issues with charging compatibility due to the phasing out of micro USB connectors in favor of Type C USB, which have larger connectors, and suffer from poor abrasion resistance and concentricity problems in their convex rib fastening mechanisms, leading to unreliable connections and poor handfeel.
Innovation Solution
A rechargeable stylus design featuring ring-shaped contacts and pins that can be inserted into a headset socket for charging and data transmission, with a secure screw-thread connection to ensure concentricity and reliable electrical contact, allowing the stylus to be charged and data-transmitted using the microphone and ground pins of a headset socket.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If micro USB connectors are used for charging the stylus, then the stylus can be charged, but the connectors are being phased out and Type C USB connectors are larger and not suitable for the stylus structure
Solution Approach 1:
The patent applies universality by enabling the headset socket (originally designed for audio/microphone functions) to serve a dual purpose: audio communication and stylus charging. The socket's existing pins (microphone pin and ground pin) are repurposed to provide charging functionality, eliminating the need for dedicated charging connectors while maintaining compatibility with the stylus design
2Strength
If convex rib structure is used to fasten the first body and second body, then the bodies are connected, but the abrasion resistance is poor causing low connection reliability
Solution Approach 1:
The patent replaces the mechanical convex rib fastening system with a screw-threaded connection system. The socket includes a screw thread structure that engages with a corresponding threaded structure on the plug, providing superior friction resistance and connection reliability compared to the convex rib design. This mechanical substitution maintains assembly simplicity while significantly improving connection durability
3Stability of the object's composition
If convex rib structure is used to fasten the bodies, then the bodies are connected, but it is difficult to ensure concentricity after assembly resulting in poor handfeel
Solution Approach 1:
The screw-threaded connection system inherently provides better concentricity control compared to convex rib fastening. The threaded engagement creates a centered, precise alignment between the plug and socket during assembly, ensuring the stylus maintains proper concentricity and ergonomic handfeel while achieving stable assembly
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 solution provides a secure and reliable connection for charging and data transmission, ensuring the stylus is charged efficiently and securely attached, while also ensuring good electrical contact and concentricity, addressing the limitations of previous stylus designs.
Implementation Method 1
the first ring-shaped contact and the second ring-shaped contact are allowed to be inserted into a headset socket with a microphone pin and a ground pin... the first ring-shaped contact is in electrical contact with the ground pin of the headset socket, and the second ring-shaped contact is in electrical contact with the microphone pin of the headset socket
Data Source
Figure 1
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AI summary
This application relates to the stylus field, and discloses a rechargeable stylus, an electronic device, and a plug, to implement charging of the stylus. The rechargeable stylus includes a first body. A column-shaped plug is disposed at one end of the first body, and a first ring-shaped contact and a second ring-shaped contact are disposed in turn from a fixed end to a top end in a radial direction on a body of the plug; a rechargeable first circuit is disposed inside the first body, and the first circuit has two charging ends, with one being a ground end and the other being a positive voltage end; the first ring-shaped contact and the second ring-shaped contact are electrically connected to the two charging ends, respectively; and the first ring-shaped contact and the second ring-shaped contact are allowed to be inserted into a headset socket with a microphone pin and a ground pin, and the microphone pin is capable of providing positive voltage for charging. Embodiments of this application are applied to a stylus design.