Motor Connector with Flow Path Groove for Liquid Droplet Discharge
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Motors with brushes used in environments where liquid droplets are present face challenges in preventing liquid adhesion to the brush, which increases component count and manufacturing complexity due to the need for O-rings or gaskets to prevent liquid infiltration.
Innovation Solution
A motor design featuring a connector member with a flow path groove and a through-hole, allowing liquid droplets to flow down and be discharged outside without the need for O-rings or gaskets, reducing adhesion to the brush and simplifying manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an O-ring or gasket is provided in the periphery of the connector member to prevent infiltration of liquid droplets, then liquid droplet adhesion to the brush is prevented, but the number of components increases and manufacturing complexity increases
Solution Approach 1:
The patent integrates the liquid droplet discharge function directly into the connector member by forming a flow path groove on its outer surface. This merges the sealing/discharge function with the connector structure itself, eliminating the need for separate O-rings or gaskets while maintaining liquid droplet prevention capability.
Solution Approach 2:
The connector member serves dual purposes: it connects the lead wire to the brush and simultaneously discharges liquid droplets through its integrated flow path groove. The structure is designed to automatically guide and discharge liquid droplets without requiring additional active components or complex mechanisms.
2Reliability
If an O-ring or gasket is provided in the periphery of the connector member, then liquid droplet infiltration is prevented, but manufacturing cost increases
Solution Approach 1:
The discharge function is merged into the connector member structure itself through the flow path groove. This integration eliminates the need for separate sealing components, reducing part count and associated manufacturing costs while maintaining effective liquid droplet prevention.
Solution Approach 2:
The invention changes the surface geometry of the connector member by adding a flow path groove, transforming it from a simple connector into an active liquid management component. This geometric modification provides sealing and discharge functionality without requiring additional materials or complex manufacturing processes.
3Ease of manufacture
If the connector member has a simple structure without flow path groove, then manufacturing is simpler, but liquid droplets adhere to the brush
Solution Approach 1:
The connector member's outer surface is modified by adding a flow path groove, changing its geometric parameters to enable liquid droplet discharge functionality. This relatively simple geometric addition provides effective liquid management while maintaining manufacturing feasibility.
Solution Approach 2:
The connector member is designed to automatically discharge liquid droplets through its integrated flow path groove without requiring external assistance or complex mechanisms. The structure itself provides the liquid discharge function through its designed geometry.
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
The motor effectively prevents liquid droplet adhesion to the brush, reducing component count and manufacturing costs by utilizing a drainage structure within the motor's design, enhancing reliability and efficiency.
Implementation Method 1
liquid droplets adhering to the connector member flow down the flow path groove and the flow path surface and are discharged to the outside of the back cover through the through-hole
Data Source
AI summary
A motor includes a housing, a back cover, a brush card, a brush, and a connector member. The back cover includes a first rear wall portion and a first peripheral wall portion. The first peripheral wall portion includes a through-hole and a cut-out. The through-hole vertically penetrates through the first peripheral wall portion at or near a lower end portion of the first peripheral wall portion. The cut-out is disposed farther on an upper side than the through-hole. The connector member is fitted into the cut-out. An outer surface of the connector member is provided with a flow path groove that extends in both peripheral and axial directions. The motor includes a flow path surface on an inner surface of the back cover. The flow path surface continues from a portion that opposes the flow path groove on a lower side of the flow path groove to the through-hole.