PMSM Stator Pin Support for Automated PCB Connection
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing production methods for permanent magnet synchronous electric motors used in household appliances, such as dishwashers and washing machines, face inefficiencies due to the manual labor required for cable-connector connections, leading to prolonged production times and increased costs.
Innovation Solution
The implementation of a pin support member made from plastic material with recesses and support extensions to secure and rigidify the thin pins connecting the stator and printed circuit board, along with guide extensions and holes for precise alignment, reduces the risk of pin bending and facilitates automatic production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual labor is used for cable-connector connections, then connection reliability is maintained, but production time is prolonged and costs increase
Solution Approach 1:
The patent introduces a pin support member as an intermediary component that facilitates automatic connection between the stator and printed circuit board. This mediator enables automated insertion and positioning of connection pins, eliminating the need for manual labor while ensuring reliable electrical connections through precise alignment and support.
2Device complexity
If thin pins are used for electrical connection, then device complexity is reduced, but pins bend during production
Solution Approach 1:
The pin support member performs preliminary actions by pre-positioning and supporting the thin connection pins before the actual connection process. The support extensions and recesses prepare the pins in advance, ensuring they are properly aligned and protected from bending during subsequent automated insertion into the printed circuit board sockets.
3Reliability
If connectors are used for electrical connection, then connection reliability is improved, but space occupation increases
Solution Approach 1:
The patent extracts the essential connection function from traditional bulky connectors and implements it through simplified pin-based connections supported by a compact pin support member. This extraction eliminates unnecessary connector components while maintaining reliable electrical connections, thereby reducing space occupation within the motor housing.
Data Source
AI summary
The present invention relates to an electric motor (1), suitable for operating the circulation or discharge pumps of household appliances like the dishwasher or washing machine, comprising a printed circuit board (PCB) (2), a stator (4) connected electrically to the printed circuit board (2), having one or more than one phase winding (3), a rotor (5), one or more than one winding end (6) extending outwards from the stator (4), providing electrical connections to be made to the phase windings (3), one or more than one terminal (8) each having a pin (7) extending to the printed circuit board (2) whereto the winding ends (6) are attached, one or more than one terminal housing (9) disposed on the stator (4), wherein the terminals (8) are placed such that the pins (7) extend outwards and whereat the terminals (8) are attached by the winding ends (6) and more than one socket (10) arranged on the printed circuit board (2), completing the electrical connection between the printed circuit board (2) and the stator (4) by the ends of the pins (7) being inserted therein.