Rotating Machine Stator Terminal Inversion for Compact Design
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Solution Overview
Problem
Rotating machines, such as motors and generators, face challenges in size reduction due to protruding terminals that increase dimensions, and existing terminal structures do not effectively accommodate various lead wire diameters for efficient connection.
Innovation Solution
A rotating machine design featuring a resin-molded stator with a terminal connected to a drawn-out wire section, where the external connection part is integrated into the stator core's molded section, allowing the terminal to protrude inwardly toward the rotor shaft, and includes a hole section with varying diameters for versatile lead wire connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the terminal protrudes outward from the outer surface of the rotating machine, then the terminal can be easily connected to the lead wire, but the dimensions of the rotating machine are increased
Solution Approach 1:
Instead of making the terminal protrude outward from the outer surface, the patent inverts the design by making the terminal protrude inward toward the rotating shaft. The external connection part of the terminal is positioned on the inner periphery of the stator, reversing the conventional outward-protruding design. This inversion allows easy connection to lead wires while preventing increase in the external dimensions of the rotating machine.
2Device complexity
If a single terminal structure is used, then the device complexity is reduced, but the adaptability to multiple lead wire diameters and connection methods is limited
Solution Approach 1:
The patent applies universality by designing a single terminal structure with a hole section that can accommodate multiple lead wire diameters and support various connection methods (soldering, mechanical fitting, crimping). This multi-functional design eliminates the need for multiple specialized terminals, reducing device complexity while enhancing adaptability to different connection requirements.
Data Source
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AI summary
Provided is a rotating machine including a stator that can have a small structure. A resin-molded stator 20 of the rotating machine includes a stator core 21, a coil, a terminal 50, and a molded section 60. The stator core 21 is formed by laminating steel plates. The coil is provided on the stator core 21. The terminal 50 is connected to a drawn-out wire section on the end of a conductor forming the coil and a lead wire. The molded section 60 covers a coil end section near one end face of the stator core 21 in a lamination direction. A part of the terminal 50 connected near the one end face of the stator core 21 to the drawn-out wire section is included in the molded section 60. An external connection part 51 connected to the lead wire is protruded from the molded section 60 toward a rotating shaft (shaft) 18 of a rotor 12 of the rotating machine.