Brushless Motor Winding Device Single Spool Radial Conveyance
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Solution Overview
Problem
Conventional winding devices for brushless motors require multiple spools and stretchers equal to the number of nozzles, leading to increased size and space requirements, especially for motors with twenty or more teeth, which hinders size reduction and efficiency.
Innovation Solution
A winding device with a wire drawing and cutting mechanism that draws wire from a single spool, cuts it to a predetermined length, and conveys it radially to multiple nozzles, eliminating the need for multiple spools and stretchers by using a wire storing mechanism to store and convey the wire efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple spools and stretchers are disposed around the nozzles to supply wire to each nozzle individually, then each nozzle can receive wire reliably, but the device size and installation area increase significantly
Solution Approach 1:
The patent merges multiple wire supply functions into a single integrated wire supply unit. Instead of having separate spools and stretchers for each nozzle, one wire supply unit supplies wire to all nozzles simultaneously through a shared wire conveyance mechanism, dramatically reducing the installation area while maintaining reliable wire supply to each nozzle
Solution Approach 2:
The wire supply unit is designed with multi-functionality to serve multiple nozzles. A single spool and stretcher configuration can supply wire to multiple nozzles through a conveyance mechanism that distributes wire radially to each nozzle position, making the wire supply system universal rather than dedicated to each individual nozzle
2Area of stationary object
If a single wire supply source is used for multiple nozzles, then the device size is reduced, but it becomes difficult to supply wire to multiple nozzles simultaneously
Solution Approach 1:
The wire conveyance mechanism employs dynamic design elements including a rotatable wire conveyance member that can rotate to position wire at different radial locations corresponding to different nozzle positions. This dynamic capability allows a single wire supply source to efficiently distribute wire to multiple nozzles simultaneously, maintaining high productivity while minimizing device size
Solution Approach 2:
The patent introduces a wire conveyance mechanism as an intermediary between the single wire supply source and multiple nozzles. This intermediary mechanism includes a wire conveyance member that receives wire from the spool, processes it through the stretcher, and distributes it to multiple nozzles, enabling efficient wire distribution from a single source to multiple destinations
Data Source
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AI summary
A winding device including radially disposed nozzles of a same number as the number of teeth, a plurality of the nozzles simultaneously drawing out a wire to corresponding slots between respective teeth to simultaneously wind the wire between predetermined two slots that correspond to a respective one of the nozzles, includes a wire drawing and cutting mechanism configured to draw out the wire from a single spool and cut the drawn-out wire at a predetermined length, a wire storing mechanism configured to dispose the wire of the predetermined length obtained by the wire drawing and cutting mechanism in a radial manner and store the wire to a same number as that of the plurality of nozzles, and a wire conveyance mechanism configured to convey the radially disposed plurality of wires from the wire storing mechanism, to the plurality of nozzles.