Mask Apparatus Fan Module Mounting Structure for Vibration Reduction
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Solution Overview
Problem
Existing mask apparatuses with fan modules experience increased assembly time and vibration issues due to improper fixation of the blower fan, leading to noise and discomfort during use.
Innovation Solution
A mask apparatus design featuring a fan module firmly fixed within a mask body using a fan module mounting portion with fixing ribs and a mask body cover that aligns and secures the fan module, reducing assembly time and vibration by ensuring proper alignment and contact with the mask body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the blower fan is fixed between the front frame and rear frame by insertion, then the fan module can be assembled, but the assembly time increases and the fan module becomes loosely fixed
Solution Approach 1:
The mask apparatus is divided into separate modules: front frame, rear frame, and fan module. The fan module is pre-assembled with the blower fan attached to the front frame, then the entire assembly is coupled to the rear frame. This segmentation allows for more efficient assembly while maintaining secure fixation.
Solution Approach 2:
The fan module integrates multiple components into a unified assembly. The blower fan is combined with the front frame to form a pre-assembled unit that includes the fan housing, fan blade, and motor. This merging reduces the number of separate assembly steps and improves overall assembly efficiency.
2Device complexity
If the blower fan is loosely fixed between the front frame and rear frame, then assembly is simpler, but vibration is generated and noise increases
Solution Approach 1:
The blower fan is pre-fixed to the front frame before the final assembly with the rear frame. This preliminary fixation ensures proper alignment and secure attachment, preventing loose fixation that would cause vibration and noise during operation.
Solution Approach 2:
The fan housing acts as an intermediary structure between the blower fan motor and the air flow path. It provides a rigid enclosure that stabilizes the fan assembly, reduces vibration transmission, and directs airflow efficiently, thereby minimizing noise generation.
Data Source
AI summary
A mask apparatus includes a mask body including an air duct and a fan module mounting portion disposed at a suction-side of the air duct, a fan module disposed at the fan module mounting portion, and a mask body cover that is coupled to the front surface of the mask body and covers the fan module and the air duct. The mask body cover defines an air suction hole configured to communicate air with a fan inlet, and the fan module has a first end inserted into the air duct and a second end coupled to the mask body. The fan module mounting portion includes a fan module coupling portion that protrudes from the front surface of the mask body and that couples the second end of the fan module to the mask body.