Vehicle Fan Assembly Screwless Mounting via Foam Securing Element
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Solution Overview
Problem
Conventional fan assemblies for vehicles, which use screws for mounting, experience vibration and noise issues due to size limitations and clearance between the frame and seat, hindering effective heat dissipation, especially in hot weather.
Innovation Solution
A fan assembly with a frame and securing element that eliminates the need for screws, featuring a positioning hole system allowing the frame to be securely positioned without screws, reducing vibration and noise through a multilayer foam structure with specific hole shapes and sizes for precise alignment and retention.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If screws are used to mount the frame on the seat, then the fan can be securely fixed, but the assembly complexity increases and vibration and noise are generated due to clearance between the frame and seat
Solution Approach 1:
The patent removes the screws and mounting holes from the frame structure, extracting the fastening function to the foam securing element instead. This eliminates the need for穿透式 mounting and reduces assembly complexity while maintaining secure fixation.
Solution Approach 2:
The foam securing element acts as an intermediary between the frame and the seat, providing both mounting and vibration damping functions. The foam material fills the clearance between frame and seat, eliminating noise and vibration while simplifying the overall assembly.
2Reliability
If mounting holes are formed on the frame, then the frame can be secured to the seat, but the size and position of mounting holes are constrained by frame size, increasing assembly difficulty
Solution Approach 1:
The mounting holes are removed from the frame and the fastening function is transferred to the foam securing element. This allows the frame to be freely positioned without being constrained by pre-drilled holes, significantly easing assembly operations.
Solution Approach 2:
The patent changes the mounting approach from rigid screw-fastening with fixed hole positions to flexible foam-based securing. This parameter change in the mounting mechanism allows for easier assembly and better adaptability to different seat configurations.
3Ease of operation
If clearance is formed between the frame and seat, then the frame can be installed, but vibration and noise occur during fan operation
Solution Approach 1:
The foam securing element serves as an intermediary that eliminates the harmful clearance between the frame and seat. The foam material fills the gap completely, preventing vibration and noise during fan operation while still allowing easy installation.
Solution Approach 2:
The foam securing element provides beforehand cushioning by filling the clearance between frame and seat before the fan operates. This prevents vibration and noise from occurring during operation, addressing the harmful effects in advance.
Data Source
AI summary
A fan assembly comprises a frame and a securing element. The frame has a first end portion, a second end portion and a middle portion. The foam securing element comprises a positioning hole having a first hole having a shape corresponding to the first end portion, a second hole having a shape corresponding to the second end portion, and a third hole having a cross section larger than that of the second hole. When the second end portion is inserted into the first hole, the second end portion and the middle portion pass through the first hole and the first end portion urges against the periphery of the second hole to receive the second end portion in the third hole. The second end portion of the frame is stopped by a periphery of the positioning hole after rotating at a predetermined angle so that the frame is positioned.