Motor Stator Sheet Assembly With Precise Alignment and Insulation
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Solution Overview
Problem
Existing electric motor designs face challenges in efficiently integrating silicon steel sheets and coils while ensuring structural integrity, reducing noise and weight, and providing effective insulation and shock absorption.
Innovation Solution
A motor mechanism design incorporating a metal base, clip member, silicon steel sheets with positioning protrusions, insulation member, and a coil configuration that allows for precise alignment and fixation of silicon steel sheets, along with a hollow frame for protection and shock absorption, and a cantilever structure for sealing and damping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If silicon steel sheets are stacked and fixed using traditional methods, then the structure can be assembled, but the alignment precision and structural integrity are insufficient
Solution Approach 1:
Positioning protrusions are pre-formed on the inner surface of the central hole of the first silicon steel sheet before assembly. These protrusions fit into corresponding positioning holes in the second silicon steel sheet, establishing precise alignment beforehand. This preliminary positioning action ensures that when the sheets are stacked, they maintain accurate relative positions without requiring complex adjustment during assembly.
Solution Approach 2:
The positioning protrusions are nested within the central hole structure of the first silicon steel sheet, and the protruding portion of the metal base is nested within the positioning hole of the second silicon steel sheet. This nested configuration allows the positioning features to be integrated within the existing structural elements, achieving precise alignment while maintaining a compact design.
2Object-affected harmful factors
If traditional fixation methods are used for silicon steel sheets, then assembly can be completed, but noise reduction and vibration damping are insufficient
Solution Approach 1:
An insulation member with damping properties is placed between the first and second silicon steel sheets before final assembly. This insulation member serves as a cushioning element that absorbs vibrations and reduces noise generated during motor operation. By incorporating this cushioning layer in advance, the harmful effects of noise and vibration are mitigated before they can propagate through the structure.
3Reliability
If insulation is provided between silicon steel sheets, then electrical insulation is achieved, but the space for coil winding is reduced
Solution Approach 1:
The insulation function is extracted from the coil winding space by placing the insulation member specifically between the silicon steel sheets, rather than within the coil winding area. This separation of insulation function from the coil space ensures that electrical insulation is provided where needed (between conductive silicon steel sheets) without encroaching on the volume available for coil winding.
4Ease of manufacture
If the metal base structure is simplified, then manufacturing is easier, but positioning accuracy and fixation reliability are reduced
Solution Approach 1:
The metal base features an asymmetric design with a central hole that is offset from the geometric center, and positioning protrusions that are strategically placed on the inner surface. The protruding portion extends in a specific direction to engage with the positioning hole. This asymmetric configuration provides precise positioning functionality while maintaining a relatively simple overall structure that is easy to manufacture.
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
Enhances structural integrity, reduces noise and weight, prevents short circuits, and provides effective insulation and shock absorption, while facilitating easy assembly and connection adjustments.
Implementation Method 1
A positioning protrusion is formed on an inner surface of the first central hole. The positioning protrusion protrudes inwardly and has a positioning hole. The protruding portion passes through the positioning hole.
Implementation Method 2
The insulation member is connected to the first silicon steel sheet and the second silicon steel sheet
Implementation Method 3
the coil winds around the first or second pole teeth
Implementation Method 4
Most electric motors operate through the interaction between the current and the magnetic field
Implementation Method 5
the shock absorbing member is disposed between the hollow frame and the metal base and in contact with the hollow frame
Data Source
AI summary
A motor mechanism is provided. The motor mechanism includes a metal base, a clip member, a first silicon steel sheet, a second silicon steel sheet, and an insulation member. The metal base includes a protruding portion. The clip member is connected to the metal base. The first silicon steel sheet includes a first central hole and a plurality of first pole teeth. A positioning protrusion is formed on the inner surface of the first central hole and has a positioning hole. The protruding portion passes through the positioning hole. The second silicon steel sheet is stacked on the first silicon steel sheet, and includes a plurality of second pole teeth. The appearances of the first silicon steel sheet and the second silicon steel sheet are different. The insulation member is connected to the first and the second silicon steel sheets. The clip member clips on the insulation member.