Stator, motor, and ventilation device
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Solution Overview
Problem
Conventional motor stator connection methods using solder for bonding winding terminals and terminal pins lack quality stability and accuracy, especially with aluminum wire connections, making it difficult to visually check the finished quality and leading to potential electrolytic corrosion.
Innovation Solution
A stator design featuring an iron core, winding, insulator, and substrate with a terminal pin configuration that includes an upper and lower connection part, where the upper connection part is isolated from the lower to prevent heat transfer during soldering, allowing for improved visualization and stability of the connection quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If solder is used to connect the terminal pin to the substrate, then electrical connection is achieved, but the finished quality cannot be visually checked and quality stability deteriorates
Solution Approach 1:
The terminal pin is divided into two independent connection parts: an upper connection part that connects to the winding terminal and a lower connection part that connects to the substrate. This segmentation allows the upper connection to be completed before soldering, enabling visual inspection of the winding connection quality before the soldering process obscures it with coating material.
Solution Approach 2:
The upper connection part is connected to the winding terminal in advance, before the soldering process. This preliminary action allows the connection quality to be visually inspected and confirmed before the terminal pin is soldered to the substrate, ensuring quality stability without compromising inspection capability.
2Reliability
If the terminal pin is soldered to the substrate, then electrical connection is achieved, but the solder part is heated again causing quality instability
Solution Approach 1:
The terminal pin is segmented into an upper connection part and a lower connection part. The upper connection part is connected to the winding terminal through a non-soldering method (such as winding around and bonding), which creates a connection that is resistant to thermal damage during subsequent soldering of the lower connection part to the substrate.
Solution Approach 2:
The upper connection is established in advance using a method that does not involve soldering, so that when the lower connection part is later soldered to the substrate, the upper connection part is not subjected to reheating that would compromise its quality.
3Object-affected harmful factors
If coating material is applied to prevent electrolytic corrosion, then corrosion protection is achieved, but accuracy in filling cannot be visually checked
Solution Approach 1:
The terminal pin is divided into upper and lower connection parts, with the upper connection part exposed and visible after the winding connection is completed. This allows visual inspection to confirm that the connection is proper and that coating material will be applied correctly to protect against electrolytic corrosion, while the lower connection part can be soldered to the substrate.
Data Source
AI summary
A Stator includes: an iron core formed in an annular shape; winding wound around the iron core; an insulator (3) configured to insulate the iron core from the winding; a substrate (6); and a terminal pin (12) configured to connect the winding to the substrate (6). The substrate (6) includes a through hole configured to penetrate the substrate (6) and cause an iron-core facing face (6a) and a back face (6b) to communicate. The terminal pin (12) includes: with the terminal pin (12) penetrating the through hole, an upper connection part (5a) provided at a distance from the back face (b) in a direction opposite to the iron core and connected to the winding; and a lower connection part (5b) provided in the vicinity of the through hole, arranged independently of the upper connection part (5a), and connected to the substrate (6).