Capstan Motor Circuit Board Fixing for Electrical Continuity
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Solution Overview
Problem
Conventional capstan motors often lack stable continuity between the stator core and circuit board due to screws not making contact with the circuit board, leading to potential electrical discontinuities and reduced motor performance.
Innovation Solution
A motor design featuring a rotor and stator with a bracket system that includes a conductive first fixing portion, which securely holds the circuit board to the stator core, ensuring contact with both the upper and lower wiring patterns on the circuit board, thereby establishing electrical continuity and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional screw-fixing structure is used to hold the circuit board, then the structure is simple and easy to manufacture, but the screw may not contact the circuit board, resulting in unstable electrical continuity
Solution Approach 1:
The fixing structure is divided into two functional parts: a board holding portion that contacts the circuit board and provides electrical connection, and a stator fixed portion that secures the assembly to the stator. This segmentation ensures reliable electrical continuity while maintaining structural simplicity.
Solution Approach 2:
The first fixing portion serves multiple functions simultaneously: it holds the circuit board mechanically, provides electrical connection through conductivity, and secures the assembly to the stator. This multi-functionality eliminates the need for separate components, maintaining simplicity while ensuring reliability.
2Reliability
If screws are used to fix the circuit board to the stator, then the manufacturing process is simple, but stable continuity between the stator core and circuit board cannot be ensured
Solution Approach 1:
The board holding portion and stator fixed portion are merged into a single integrated component (the first fixing portion). This combination ensures continuous electrical connection from the circuit board through the fixing portion to the stator core, while the one-piece design actually simplifies the manufacturing process by reducing the number of parts to assemble.
3Reliability
If a conventional fixing method is used, then the device is simple, but the electrical connection stability between stator core and circuit board deteriorates
Solution Approach 1:
The first fixing portion acts as an intermediary component between the circuit board and the stator core. It provides a dedicated electrical pathway that ensures stable continuity, while its integrated design means it functions as a single replacement component rather than multiple separate parts, thus not increasing overall device complexity.
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
This design enhances the electrical connection between the stator core and circuit board, improving the motor's stability and performance by ensuring consistent conductivity and reducing the risk of electrical discharge, while also simplifying wiring and maintaining high positional accuracy.
Implementation Method 1
a first fixing portion (8) having conductivity and fixing the circuit board (7) to the stator (2)
Data Source
AI summary
A motor includes a rotor rotatable about a center axis extending vertically, a stator radially opposing the rotor, a bracket holding the stator, a circuit board including an upper surface with a first wiring pattern and a lower surface with a second wiring pattern, and a first fixing portion having conductivity and fixing the circuit board to the stator. The stator includes a stator core having conductivity. The first fixing portion includes a board holding portion holding the circuit board, and a stator fixed portion fixed to a portion of the stator core. The board holding portion is in contact with the first wiring pattern and the second wiring pattern.