Oscillating Fan Integrated Pull Switch Control
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Solution Overview
Problem
Conventional wall fans have a control box that occupies additional space, making them less space-efficient and inconvenient to control when mounted in high positions.
Innovation Solution
An oscillating fan with a built-in pull-type control switch and integrated components, allowing users to control rotational speed, air volume, oscillation, and timer via a pull switch hung from the housing, enabling convenient operation even when mounted on walls or ceilings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a control box is provided on the lower side of the fan main body with separate pull strings for oscillation and speed control, then the fan can maintain complete control functionality, but the fan occupies additional space and becomes less space-efficient
Solution Approach 1:
The patent merges the oscillation control and speed control functions into a single integrated control mechanism. The control box is integrated into the fan main body structure, and multiple pull strings share a common mounting structure, allowing both oscillation and speed control without requiring separate control boxes or additional space.
2Adaptability or versatility
If the fan is mounted on a wall or ceiling at a high position, then the fan can be installed in spaces with limited floor area, but the control pull strings become difficult to reach and operate
Solution Approach 1:
The patent extends the pull strings vertically downward from the fan housing, creating a long hanging structure that allows users to reach and operate the controls from below even when the fan is mounted high on walls or ceilings. This vertical extension in the downward direction resolves the accessibility problem.
3Adaptability or versatility
If separate control boxes and pull strings are used for oscillation and speed control, then the fan can provide variable rotational speeds and oscillation control, but the overall structure becomes more complex and space-consuming
Solution Approach 1:
The patent creates a universal control mechanism where a single integrated control box and multiple pull strings can perform both oscillation control and speed control functions. The control box serves multiple purposes, and the pull strings can be configured to control different fan functions, reducing the need for separate control mechanisms and simplifying the overall structure.
Data Source
AI summary
An oscillating fan with built-in pull-type control switch includes a housing defining a receiving space having a front open end; a driving motor mounted to the front open end of the receiving space and having a first rotary shaft; a blade assembly mounted to the first rotary shaft; at least one pull switch having a selector mounted in the housing and an actuator extended through and located outside the housing; and a control box provided in the receiving space to electrically connect to the driving motor and every pull switch. The actuator includes a pull string having an end connected to the selector and another end hung from the housing by a predetermined length, allowing a user to control the oscillation of the fan via the pull string. Since most fan components are integrated in the housing, the fan occupies only reduced space and is more practical for use.