Motor Bracket Board Support Wire Protection
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Solution Overview
Problem
Conventional motors with built-in boards face issues where external forces can cause wires extending from the board to become detached and disconnected due to inadequate wire management and protection.
Innovation Solution
The motor design incorporates a board support with a wiring through hole, a lid, and a guide bridge that holds the wire in place, providing a secure path for the wires to exit the motor while preventing disconnection and damage from external forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wires are drawn out from the case without additional protection, then the structure remains simple, but the wires become vulnerable to detachment and disconnection when external force is applied
Solution Approach 1:
The patent introduces an intermediary structure (the board support with lid and guide bridge) that mediates between the wire and the external environment. This intermediary protects the wire from direct exposure to external forces while maintaining a relatively simple overall structure, resolving the contradiction between reliability and complexity.
Solution Approach 2:
The board support is segmented into functional components: the lid that covers the wiring through hole and the guide bridge that directs the wire. This segmentation allows each component to perform its specific protective function independently, achieving reliable wire protection without requiring a completely complex redesign of the entire wire management system.
2Reliability
If a simple board support structure is used, then manufacturing costs are low, but the wire lacks protection against external forces
Solution Approach 1:
The patent merges the wire protection function with the existing board support structure. By integrating the lid and guide bridge into the board support, the invention achieves wire protection without requiring separate, complex manufacturing processes. This merging approach maintains ease of manufacture while improving reliability.
Solution Approach 2:
The board support structure is designed to serve multiple functions: supporting the circuit board, providing a wiring through hole, and protecting the wire with the lid and guide bridge. This multi-functionality reduces the need for additional separate components, thereby maintaining manufacturing simplicity while achieving reliable wire protection.
3Reliability
If the wire is allowed to extend freely from the board, then installation is simple, but the wire becomes susceptible to disconnection under external force
Solution Approach 1:
The patent implements preliminary action by pre-configuring the lid and guide bridge in the board support structure before wire installation. The guide bridge is positioned to automatically guide the wire into the correct path, and the lid is in place to provide immediate protection. This preliminary preparation ensures reliable wire protection while maintaining ease of installation, as the wire simply needs to be routed through the pre-configured path.
Data Source
AI summary
A motor includes a stationary structure, and a rotor rotatable about a central axis with respect to the stationary structure. The stationary structure includes a stator including a coil, a bracket that supports the stator, and a circuit board disposed between the stator and the bracket. The bracket includes a board support that holds the circuit board between the bracket and the stator in an axial direction. The board support includes a wiring through hole that penetrates the board support in the axial direction and through which a wire extending from the circuit board passes, a lid that partially covers the wiring through hole, and a guide bridge that is located inside the wiring through hole when viewed in the axial direction and holds the wire between the lid and the guide bridge.