Partitioned Motor Module Layout for Thin Fan Shoe Mounting
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Solution Overview
Problem
Conventional fans mounted on shoes face challenges in mounting due to large motors, necessitating a reduction in motor thickness.
Innovation Solution
A motor module design featuring a vertically rotatable motor with a casing that partitions the accommodation space into multiple sections, including a motor and board accommodation space, with a partition wall and guide grooves for lead wires, and a seal to prevent moisture intrusion, allowing for a thinner profile.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the motor is made larger to provide sufficient power, then the motor can deliver adequate performance, but it becomes difficult to mount the fan on the shoe
Solution Approach 1:
The patent transitions from horizontal arrangement to vertical stacking, arranging the motor, battery, and control board in the thickness direction (axial direction) of the shoe. This dimensional change allows sufficient power components to be accommodated without increasing the planar footprint, resolving the contradiction between motor power and mountability on shoe.
Solution Approach 2:
The patent nests multiple functional components within each other in the vertical direction: the control board is positioned below the motor, the battery is positioned below the control board, and these are all contained within the shoe's thickness envelope. This nested arrangement maximizes space utilization, allowing adequate power components to fit within the constrained volume of the shoe.
2Volume of moving object
If the motor thickness is reduced to enable mounting on shoe, then the fan can be mounted on the shoe, but the available space for battery and other components is limited
Solution Approach 1:
The patent utilizes the thickness direction (axial direction) as the primary arrangement dimension, stacking the motor, control board, and battery vertically. This allows the battery capacity to be increased along the thickness axis rather than being constrained by planar dimensions, resolving the contradiction between reduced motor thickness and adequate battery capacity.
Solution Approach 2:
The patent segments the internal space into distinct functional zones along the vertical axis: motor accommodation space, control board space, and battery space. This segmentation allows each component to be optimized independently while efficiently utilizing the total available volume, enabling adequate battery capacity within the constrained thickness.
3Reliability
If the accommodation space is partitioned into multiple sections, then components can be organized and protected, but the structural complexity increases
Solution Approach 1:
The patent divides the accommodation space into three main sections using partition walls: motor accommodation space, control board accommodation space, and battery accommodation space. This segmentation provides effective isolation and protection for each component while maintaining a relatively simple overall structure that follows the vertical stacking arrangement.
Solution Approach 2:
The partition walls serve multiple functions: they physically separate components for protection, provide structural support for the casing, and facilitate the vertical stacking arrangement. This multi-functionality reduces the need for additional protective structures, keeping the overall device complexity manageable while achieving reliable component protection.
Data Source
AI summary
A motor module includes a motor and a casing including a partition wall. The accommodation space includes first and second accommodation spaces. The partition wall includes a base that partitions the first and second accommodation spaces in an axial direction. The base includes a wiring including a lead-out port and a guide groove extending from the lead-out port. The lead wire is led out from the lead-out port and located in the guide groove. The casing includes a tape and a seal. The tape covers at least a portion of the wiring from below. The seal is located in at least a portion of a space defined by the wiring and the tape.