Ventilation Fan Housing with Separate Wire and Maintenance Openings
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Solution Overview
Problem
Conventional ventilation systems face difficulties in maintenance due to electric terminals and wires blocking the maintenance opening, making it hard to disengage the lid and perform maintenance tasks without risking disconnection of electrical components.
Innovation Solution
A ventilation fan housing design featuring a shield body with a maintenance opening and an adjacent wire-positioning opening, allowing electric terminals and wires to pass through for assembly and maintenance, while a detachable lid covers the maintenance opening to facilitate easy cleaning and maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electric terminals and wires pass through the maintenance opening for electrical connection, then electrical connectivity is achieved, but maintenance difficulty increases due to blocking and disconnection risks
Solution Approach 1:
The patent divides the opening into two separate openings: a maintenance opening for access and a wire-positioning opening for electrical connections. This segmentation allows the maintenance opening to be freely accessible while wires pass through the dedicated wire-positioning opening, resolving the conflict between electrical connectivity and maintenance convenience.
Solution Approach 2:
The patent extracts the wire passage function from the maintenance opening by providing a separate wire-positioning opening. This extraction removes the blocking effect of wires from the maintenance opening, allowing maintenance personnel to access internal components without obstruction or disconnection risks.
2Ease of operation
If the lid is made detachable for easy maintenance access, then maintenance convenience improves, but structural complexity increases due to additional coupling mechanisms
Solution Approach 1:
The lid is designed with detachable coupling structures that allow it to be easily attached and detached from the housing. This dynamic design enables the lid to transition between fixed and removable states, providing easy maintenance access while maintaining a simple overall structure through standardized coupling mechanisms.
3Reliability
If wires are positioned through positioning holes in the lid for electrical connection, then electrical connectivity is achieved, but maintenance difficulty increases due to blocking of the maintenance opening
Solution Approach 1:
The patent segments the opening functions by providing separate maintenance and wire-positioning openings in the housing, and correspondingly separate maintenance and positioning structures in the lid. This allows wires to pass through positioning holes without blocking the maintenance opening, resolving the contradiction between electrical connection and maintenance access.
Solution Approach 2:
The patent extracts the wire passage function from the lid's maintenance opening area by providing dedicated positioning holes or a separate wire-positioning opening. This extraction eliminates the blocking effect on the maintenance opening while maintaining electrical connectivity through the dedicated wire passage structure.
Data Source
AI summary
A ventilation fan housing includes: a shield body having a receiving space, a maintenance opening and a wire-positioning opening adjacent to the maintenance opening, with the maintenance opening and wire-positioning opening penetrating a wall of the shield body and communicating with the receiving space, and with a lid connecting with the shield body detachably to cover the maintenance opening.