Blower Casing Fixing Position Adjustment via Segmented Retaining Block
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Solution Overview
Problem
Existing blower devices with integral fixing and attaching feet require multiple molds for different fixing positions, leading to high costs and complexity.
Innovation Solution
A blower device design featuring guide rail portions on the casing, a fixing attaching foot with a flange and retaining block, where the retaining block has a connecting portion with a smaller width than the blocks, and ribs and projecting portions for secure attachment, allowing for easy adjustment of the fixing position without changing the casing mold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the fixing and attaching foot is formed integrally with the blower case, then the structure is simple and strong, but multiple different molds must be prepared when changing the fixing position, resulting in high cost
Solution Approach 1:
The fixing and attaching foot is divided into two separate components: the blower case and the fixing/attaching foot. This segmentation allows the blower case to be molded once with a single mold, while the fixing/attaching foot can be separately molded and attached at different positions without requiring multiple different molds for the case itself.
Solution Approach 2:
The blower case is designed with a universal structure that can accommodate fixing/attaching feet at multiple positions. By separating the fixing function into a detachable component rather than an integral feature, the same blower case design can serve multiple fixing position requirements, making the case mold universal rather than position-specific.
2Reliability
If the fixing and attaching foot is formed integrally with the blower case, then the attachment is secure, but it is difficult to change the fixing position without creating new molds
Solution Approach 1:
By separating the fixing/attaching foot from the blower case into distinct components, the design enables the fixing position to be changed by attaching the foot to different locations on the case. The segmentation maintains secure attachment through dedicated joining mechanisms while providing the flexibility to reposition the fixing foot as needed.
Solution Approach 2:
The fixing/attaching foot transitions from a static, integral feature to a dynamic, repositionable component. This allows the fixing position to be adjusted or changed without redesigning or remolding the entire blower case, providing adaptability while maintaining secure attachment through the separate foot component.
Data Source
AI summary
A blower device has a fixing position which is easily changed and the increase in cost is greatly suppressed. A blower device in which a flange having a fixing attaching foot is attached to rails formed on an outer circumferential surface of a casing, and a retaining block is attached to the flange to secure the flange to the casing, the retaining block includes a first block, a second block, and a connecting portion having smaller width and connecting the first block and the second block, the first block and the second block each include a retaining leg portion and a latching leg portion, and a projecting portion is formed on a side surface of the retaining leg portion and ribs are formed at both sides of the projecting portion.