Stator Screen Tab Assembly for Hole Alignment Stability
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Solution Overview
Problem
The alignment of fixing lugs on a conductive screen with the stator holes is disrupted during assembly, causing mounting issues in electronically switched electric motors, leading to assembly disruptions.
Innovation Solution
A stator assembly design where the screen is held in place by tabs contacting the radially inner surface of the winding support, preventing relative movement and ensuring proper alignment during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the screen is fixed onto the stator using screws through aligned holes in fixing lugs and stator, then the screen can be securely mounted to limit electromagnetic radiation, but the alignment of holes is disrupted during movement between workstations causing assembly disruptions
Solution Approach 1:
The screen is pre-positioned on the stator at a first workstation with holes aligned, then the assembly is moved to a second workstation for screwing. This preliminary positioning ensures alignment is established before movement, allowing the screwing operation to proceed without disruption despite accelerations during transport.
2Adaptability or versatility
If the screen is moved relative to the stator during assembly operations, then the screen can be positioned for mounting, but accelerations during movement cause misalignment of holes preventing proper screwing
Solution Approach 1:
The screen is positioned and holes are aligned at a first workstation before any movement occurs. This preliminary action establishes the precise alignment that must be maintained during subsequent movement to the second workstation, ensuring manufacturing precision is achieved before the vulnerability to acceleration-induced misalignment arises.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Facilitates stable and efficient assembly of the screen onto the stator, maintaining alignment and reducing assembly disruptions.
Implementation Method 1
the screen comprising at least one tab in contact with the radially inner surface of the winding support
Data Source
AI summary
Stator assembly for an electronically switched electric motor, the stator assembly having a stator extending in the direction of a first axis, the stator including a winding support around which at least one winding is wound, the winding support having a radially inner surface defining a central hole extending in the direction of the first axis; a screen at least partly covering the at least one winding of the stator, the screen having at least one tab in contact with the radially inner surface of the winding support.