Retractable Cable Mouse With Magnetic Positioning
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Solution Overview
Problem
Conventional retractable cable systems in computer mice suffer from wear of steel beads and rails, precise positioning dependencies, and increased manufacturing costs due to spare cable requirements.
Innovation Solution
A reeling device within the mouse comprising a top cover, coil spring, rotating disc, positioning bead, lead wire, circuit board, and bottom cover, where the coil spring provides dynamic retraction and the positioning bead allows for stable reciprocation, with a circuit board ensuring continuous power connection through positive and negative conductive plates, and a rail structure for multiple positioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If steel bead and rail mechanism is used for cable positioning, then cable positioning function is achieved, but wear occurs after a period of use
Solution Approach 1:
The patent replaces the steel bead and rail mechanical positioning system with a magnetic positioning system. Magnets are embedded in the rotating disc and corresponding magnetic sensors or magnetic beads are used for positioning, eliminating direct mechanical contact and wear between steel components.
Solution Approach 2:
The patent changes the positioning mechanism from mechanical contact-based (steel bead on rail) to magnetic field-based positioning. This parameter change allows for wear-free operation while maintaining positioning accuracy, as magnetic fields do not degrade through friction.
2Measurement precision
If steel bead and rail mechanism is used for cable positioning, then cable positioning is achieved, but precise combination is required
Solution Approach 1:
The patent replaces the mechanical steel bead and rail system with a magnetic positioning system where magnetic fields provide positioning without requiring precise mechanical alignment. The magnetic field distribution can be controlled during manufacturing, eliminating the need for high-precision assembly of multiple mechanical components.
Solution Approach 2:
The patent merges the positioning function into the rotating disc structure itself by embedding magnets directly in the disc, rather than requiring separate steel beads and rails. This integration reduces the number of components that need precise combination, simplifying manufacturing while maintaining positioning precision.
3Ease of manufacture
If conventional reeling device is used, then cable retraction is achieved, but spare cable is required increasing manufacturing cost
Solution Approach 1:
The patent implements a self-retracting cable mechanism where the coil spring automatically retracts the cable when released. The system serves itself by using the elastic potential energy stored in the coil spring to pull the cable back through the rotating disc, eliminating the need for separate spare cable components and reducing manufacturing complexity.
Solution Approach 2:
The patent recovers and reuses the cable within the sealed reeling device through the coil spring mechanism. Instead of requiring additional spare cable, the system recycles the same cable by automatically retracting it through the rotating disc, reducing material consumption and manufacturing costs.
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 enhances the durability and stability of cable retraction, reduces wear, and minimizes manufacturing costs by using a dynamic coil spring and stable positioning mechanism, while maintaining continuous power connection.
Implementation Method 1
a coil spring (2), a rotating disc (3), a positioning bead (4), a lead wire (5), a circuit board (6) and a bottom cover (7), wherein the top cover (1) passes through a middle hole of the rotating disc (3) and mounts onto a slot at a securing seat at the bottom cover (7), and the center shaft of the top cover (1) has an opening slot for engagement with the center end of the coil spring (2)
Implementation Method 2
the positioning bead is positioned at a limiting slot formed by the railing structure and the bottom cover securing base seat such that the positioning bead can only be secured at the positioning slot of the securing base seat and allows reciprocating movement
Data Source
AI summary
A computer mouse with retractable cable is disclosed. The internal of the computer mouse contains coil spring, reeling disc, positioning bead and conductors. The lead wire once pulls, it is positioned and a second pull will restore back to its original position. The pulling of lead wire controls the required length of the mouse.