Wire Retracting Device with Feedback Lever and Slide Block
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Solution Overview
Problem
Conventional portable adapters limit the retractable length of transmission wires to one turn, making it difficult for users to determine when the wire is fully retracted, leading to potential over-winding and damage.
Innovation Solution
A wire retracting device comprising a base with an annular wall and stop portions, a limiting board, a movable cover, a slide block, and a transmission wire, allowing the wire to be wound into multiple turns while providing clear feedback on completion of the retracting process through a lever and recess system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the wire is allowed to be wound more than one turn, then the retractable length of the wire is increased, but the user cannot determine when the wire is fully retracted, leading to over-winding and damage
Solution Approach 1:
The patent implements a feedback mechanism through the lever and recess portion interaction. When the wire is fully retracted, the slide block moves to a position where the lever engages with the recess portion, providing tactile and visual feedback to the user that winding is complete. This prevents over-winding while allowing multiple turns of the wire.
Solution Approach 2:
The slide block acts as an intermediary between the wire winding mechanism and the user. It translates the wire's retraction state into a mechanical signal through the lever-recess interaction, mediating the information about wire position to the user without requiring direct observation of the wire's coiled state.
2Reliability
If the wire can only be wound one turn or less, then the wire is prevented from being over-wound, but the retractable length of the wire is limited
Solution Approach 1:
The lever and recess portion provide clear feedback indicators that allow users to safely wind the wire for multiple turns while knowing when to stop. This feedback system enables the wire to be made longer and retractable for multiple turns without increasing the risk of over-winding damage.
3Device complexity
If a conventional wire retracting mechanism is used, then the structure is simple, but the user lacks clear indication of wire retraction completion
Solution Approach 1:
The patent adds a feedback system using the lever, slide block, and recess portion that provides clear mechanical indication of wire retraction status. The lever's engagement with the recess portion creates a noticeable mechanical stop and visual indicator, ensuring users have complete information about wire position without significantly complicating the overall device structure.
Data Source
AI summary
A wire retracting device includes a base having a platform, a limiting board disposed on the base, a cover including a top surface and a side wall, a slide block slidably disposed on a sliding area, and a transmission wire disposed in an accommodating space formed between the cover and the base. An annular wall is arranged on the platform, and has a limiting portion that has a first stop portion and a second stop portion respectively formed on two sides thereof. A gap, in which the cover is limited to being movable, is formed between the limiting board and the platform. The top surface has a grooved opening, and a lever is arranged on an inner edge thereof. The side wall is disposed along an edge of the top surface. The sliding area is formed between the inner edge of the grooved opening and the annular wall.