Motor Insulating Framework With Inclined Wire Slot Coil Fixing
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Solution Overview
Problem
Existing insulating frameworks for motors lack effective structural portions for securing coils, leading to poor fixing performance and reduced slot fill factor, which is crucial for achieving high power density and compact design in compressors.
Innovation Solution
An insulating framework with integrated supports and wire slots that facilitate compact winding and secure coil fixation, featuring inclined portions and terminal accommodating structures to enhance coil stability and electrical connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the insulating framework uses a conventional structure without specialized locking features, then the device complexity is reduced, but the fixing performance of the coil is lowered
Solution Approach 1:
The wire slot is pre-formed with an inclined portion that automatically guides and pre-positions the coil lead during insertion, creating a preliminary fixing effect before final winding. This preliminary action ensures proper coil positioning without requiring complex additional locking mechanisms.
Solution Approach 2:
The inclined portion of the wire slot uses a sloped surface geometry to guide the coil lead at an angle, allowing the coil to be wedged and locked in place through the inclined surface. This curved/geometric approach provides effective locking without adding mechanical complexity.
2Productivity
If the coil winding is made more compact to improve slot fill factor, then the power density increases, but the ease of winding operation decreases
Solution Approach 1:
The inclined portion of the wire slot pre-positions and pre-compresses the coil lead before the winding process begins, creating an initial compact arrangement. This preliminary compression makes it easier to achieve high slot fill factors during subsequent winding operations.
Solution Approach 2:
The inclined portion changes the geometric parameters of the wire slot to create a sloped entry path, which allows the coil lead to be inserted and compressed at an angle. This geometric parameter change facilitates compact winding by guiding the lead into a space-efficient position.
Data Source
AI summary
An insulating framework, a stator, a motor, a compressor and a vehicle are provided. The insulating framework has a first support, a second support and a third support. The second support is disposed opposite to the first support and is provided with a wire slot. The wire slot passes through the wall surface of the second support. A portion of the bottom wall of the wire slot inclines towards the bottom of the second support to form an inclined portion. The inclined portion is located on the side of the wire slot facing the first support. The third support is located between the first support and the second support and connected to the first support and the second support.