Ceiling Loudspeaker Blister Cover for Wiring Protection
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Solution Overview
Problem
Conventional ceiling loudspeakers are prone to damage from loose wiring and tubing in false ceilings due to their exposed components, leading to electrical shorts and impaired functionality, and are costly and complex to manufacture and assemble.
Innovation Solution
A ceiling loudspeaker design featuring a lightweight, non-circular plastic cover made in the form of a blister with a wall thickness of less than 2 mm, which is open on one side and has flange sections for attachment to the loudspeaker's fastening flange, providing protection from external elements and improved mechanical stability while allowing easy assembly and reduced material costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional cover completely concealing the back of the loudspeaker is used, then protection from external elements is improved, but manufacturing cost and device complexity increase
Solution Approach 1:
The cover is segmented into a modular structure comprising a hood portion and a flange portion that can be separately manufactured and then assembled together, reducing overall device complexity while maintaining protective function
Solution Approach 2:
The flange sections are integrated into the hood structure in a nested manner, allowing the flange to be part of the cover assembly without requiring separate mounting components, thus simplifying the overall device
2Object-affected harmful factors
If a conventional cover completely concealing the back of the loudspeaker is used, then protection from external elements is improved, but manufacturing cost increases
Solution Approach 1:
The cover is made from a thin-walled plastic material that provides adequate protection while using minimal material, significantly reducing manufacturing cost compared to traditional thick or metallic covers
Solution Approach 2:
The segmented modular design allows for efficient manufacturing and assembly, reducing labor costs and material waste
3Ease of manufacture
If the cover is made with thin-walled plastic material, then manufacturing cost is reduced, but mechanical stability may worsen
Solution Approach 1:
The hood portion is designed with a curved, dome-like shape that distributes mechanical stresses evenly across the thin-walled structure, preventing deformation and maintaining stability without requiring thick walls
Solution Approach 2:
The cover uses a plastic material that combines thin wall thickness with sufficient mechanical strength through material selection and structural design, achieving both cost reduction and stability maintenance
Data Source
Figure 1
Figure 2
Figure 3(a)~3(d)
AI summary
The covering (10) is made of a plastic material and surrounds in the form of a single-sided open speaker structure, and forms a hood that is supported on a mounting flange (21) of the speaker (20). The hood has a non-circular cross-section, where the covering is formed with a wall thickness of less than 2 millimeters in the manner of a blister. The covering is made of three convex portions, which are separated by concave portions. The plastic material is polyethylene terephthalate. An independent claim is included for a ceiling speaker.