Stator End Disk Single Terminal for Commutator Motor
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Solution Overview
Problem
Existing stator end disks for commutator motors require multiple external connectors for both stator coils and internal electrical components, increasing manufacturing costs and logistical efforts due to the need for different motor variants.
Innovation Solution
A stator end disk with a single connection terminal that accommodates both stator coils and internal electrical components using a multiple connector, allowing for different configurations and easy replacement of components, and featuring integrally formed winding support parts and embedded connecting lines for simplified assembly and reduced external connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple external connectors are used for stator coils and internal electrical components, then electrical connection reliability is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent combines multiple separate connection terminals into a single integrated connection terminal that accommodates both stator coil connections and internal electrical component connections. This merging reduces the number of external connectors from multiple separate units to one unified unit, thereby reducing device complexity while maintaining reliable electrical connections for all components.
Solution Approach 2:
The single connection terminal is designed with multi-functionality to serve multiple purposes: it provides connection elements for stator coil wires, contact elements for internal electrical components (carbon brushes, thermal switches, tachometers), and accommodates external motor connection plugs. This universal design allows one connector to replace multiple specialized connectors, reducing overall device complexity.
2Adaptability or versatility
If multiple external connectors are used for different motor variants, then adaptability to different configurations is improved, but manufacturing cost and logistical effort increase
Solution Approach 1:
The connection terminal is designed as a universal component that can accommodate different motor variants through selective configuration of contact elements rather than requiring different terminal designs. The same basic terminal structure serves multiple motor variants by including or excluding specific contact elements for different internal components, thereby maintaining adaptability while simplifying manufacturing and logistics.
Solution Approach 2:
The connection terminal is segmented into modular connection elements and contact elements that can be selectively configured. This segmentation allows different combinations of elements to be used for different motor variants while maintaining the same overall terminal structure, enabling flexible adaptation without requiring complete redesign for each variant.
3Ease of repair
If separate connection terminals are used for stator coils and internal components, then ease of repair and replacement is improved, but device complexity increases
Solution Approach 1:
While merging multiple connection terminals into one integrated unit increases structural integration, the patent maintains ease of repair by providing detachable connections for internal electrical components within the unified terminal. Carbon brushes, thermal switches, and tachometers can still be individually replaced through their respective contact elements without affecting the entire terminal assembly or stator coils.
Solution Approach 2:
The connection terminal incorporates dynamic aspects through detachable and replaceable contact elements that can be individually accessed and replaced. This dynamic design allows maintenance personnel to replace specific faulty components (such as carbon brushes) without dismantling the entire terminal structure, maintaining ease of repair despite the integrated design.
Data Source
Figure 1
Figure 2A~2B
Figure 3~4
AI summary
The invention relates to a stator end disk for a laminated stator core (2) of a commutator motor (1), especially a universal motor, especially for use in a domestic appliance. Said stator end disk comprises a connecting terminal (11) having connecting elements (24, 38, 39, 40, 41) for connecting stator winding wires (51, 52, 53, 531, 532, 61, 62, 63, 631, 632) and a female connector (27, 28) with contact elements (25) for receiving and electrically connecting an external motor connector (48), every of the connecting elements (24, 38, 39, 40, 41) being connected to one associated contact element (25) each so as to be electrically conducting. Only one connecting terminal (11) is arranged on the stator end disk (10). In order to electrically contact at least one further internal, electrical component (13, 14, 15, 31) of the commutator motor (1), at least one additional contact element (25) associated with the component (13, 14, 15, 31) is arranged in the female connector (27, 28).