Retractable Shoe Wheel Structure With External Linkage Frame
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Solution Overview
Problem
Existing dual-purpose shoes with extending and retracting wheel structures have a high housing that occupies internal space and results in an unstable center of gravity, and external batteries for LEDs compromise the integrality of the sole.
Innovation Solution
A wheel extending and retracting device with an externally arranged linkage frame, reduced internal housing space, and integrated power supply, featuring a single-wheel structure and a control assembly for synchronized wheel carrier operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the linkage frame is built inside the housing of the extending and retracting device, then the structure is compact, but the housing height increases and internal space is occupied
Solution Approach 1:
The linkage frame is extracted from the internal housing structure and repositioned to the external side of the housing. The housing no longer contains the linkage frame, allowing the internal space to be freed up and the housing height to be reduced while the linkage frame remains functional on the exterior.
2Ease of manufacture
If batteries are placed outside the extending and retracting device for LED illumination, then the device is easier to assemble, but the integrality of the sole is compromised
Solution Approach 1:
The battery component is merged with the extending and retracting device housing, creating an integrated power supply unit. This combination maintains the ease of assembly while preserving the visual and structural integrality of the sole, as the battery is no longer a separate external component but part of the unified device structure.
Data Source
AI summary
The disclosure relates to a wheel extending and retracting device for dual-purpose shoes which includes: a housing and a housing cover. A front end and a rear end of the housing are rotatably connected to a front wheel carrier and a rear wheel carrier respectively, a control assembly is mounted on the housing, and a vertical limit hole is provided in the housing. The control assembly drives a locking movable shaft, and the locking movable shaft is driven by the control assembly so as to vertically move along the vertical limit hole. A retracting snap-in recess and an extending snap-in recess that are configured to snap in the locking movable shaft are provided in the rear wheel carrier. Two sides of the housing are provided with attachment steps that protrude outwards, and an outer side of the attachment step is provided with a linkage frame in an abutted manner.