Ceiling Fan Pipe Coupling Bolt With Head Direction Guide
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Solution Overview
Problem
Conventional ceiling fan coupling bolts can be inserted at wrong angles, leading to a loosened coupling between the pipe and the main body during operation, due to the lack of guidance for proper alignment.
Innovation Solution
A bolt with a threaded portion and a head featuring a curved surface that includes a head direction guide part, such as a protrusion or notch, ensures correct alignment by guiding the curved surface to conform with the pipe's outer surface, preventing incorrect insertion angles and facilitating secure fastening.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional coupling bolt with a curved surface head is used, then the bolt can be easily operated (only the nut needs to be rotated), but the coupling may loosen during operation if the bolt is inserted at a wrong angle
Solution Approach 1:
The head direction guide part introduces asymmetry to the otherwise symmetric curved surface head. This asymmetric feature (protrusion or notch) creates a unique orientation that must align with the corresponding guide structure in the coupling hole, preventing incorrect insertion angles while preserving the ease of operation benefit
2Ease of manufacture
If the coupling bolt is inserted at a wrong angle, then the assembly process is simple, but the coupling between the pipe and main body becomes loosened
Solution Approach 1:
The head direction guide part performs a preliminary alignment action before the fastening operation begins. By providing directional guidance at the insertion stage, it ensures the bolt is correctly oriented before the nut is tightened, preventing incorrect coupling while maintaining assembly simplicity
3Productivity
If a conventional coupling bolt without direction guidance is used, then the assembly process is quick, but incorrect insertion leads to loosening during operation
Solution Approach 1:
The head direction guide part enables self-alignment and self-correction during the insertion process. The asymmetric feature automatically guides the bolt into the correct orientation as it approaches the coupling hole, eliminating the need for external alignment tools or procedures while ensuring reliable coupling
Data Source
AI summary
A ceiling fan includes a suspension part, a pipe, and a main body, the main body has a coupling part, an upper portion of the coupling part has a coupling hole, a lower portion of the pipe has a pipe hole, the coupling part is inserted into the pipe, a bolt inserted into the coupling hole and the pipe hole, and a nut. The bolt includes a threaded portion and a head having a curved surface that conforms to the shape of the outer surface of the pipe. The curved surface has a head direction guide part that guides the direction of the curved surface such that the curved surface is fixed in contact with the outer surface with the nut.