Single-Layer Rotary Stop Structure for Angle-Limited Rotation
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Solution Overview
Problem
Existing rotating devices that limit rotation to a certain angle are often bulky and complex due to multi-layer structures, making them inconvenient to manufacture and assemble.
Innovation Solution
A rotating device with a simple structure comprising an annular base, first and second positioning members, and a driving member, where the positioning members are bent to fit within recessed grooves on the annular base, allowing the driving member to rotate within a specific range by using stop portions to limit rotation, thereby eliminating the need for a multi-layer structure and minimizing size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multi-layer structure is used to limit rotation angle, then rotation limitation is achieved, but the device becomes thick and large
Solution Approach 1:
The patent merges the rotation limitation function into a single-layer structure by integrating stop portions directly onto the positioning members that are pivoted to the annular base. This eliminates the need for separate multi-layer limiting structures, achieving both rotation angle control and reduced device thickness simultaneously.
Solution Approach 2:
Instead of using multiple layers stacked in the vertical dimension to limit rotation, the patent uses stop portions that extend radially outward from the positioning members in the horizontal plane. This dimensional shift allows rotation limitation to be achieved within a single layer, reducing device thickness while maintaining the limiting function.
2Reliability
If a multi-layer structure is used to limit rotation angle, then rotation limitation is achieved, but manufacturing and assembly become inconvenient
Solution Approach 1:
The patent combines the positioning and rotation limitation functions into a single integrated structure. The positioning members with attached stop portions perform both positioning and limiting functions simultaneously, eliminating the need for separate multi-layer components and simplifying both manufacturing and assembly processes.
3Volume of moving object
If the annular base is miniaturized, then overall size is reduced, but the positioning members and driving member must also be miniaturized
Solution Approach 1:
The patent divides the device into modular components (annular base, positioning members, driving member) that can be independently manufactured and then assembled. This segmentation allows each component to be optimized and manufactured separately, making miniaturization more manageable while maintaining overall device compactness.
Data Source
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AI summary
The application provides a rotating device, including: an annular base (10), a first positioning member (20), a second positioning member (30), and a driving member (40). The driving member (40) includes a pushing structure (41). The driving member (40) drives the pushing structure (41) to rotate around the outer edge of the peripheral portion (11) in a first rotating direction (R1) or a second rotating direction (R2); when the pushing structure (41) rotates in the first rotating direction (R1), the first stop portion (21) and the third stop portion (31) fit the peripheral portion (11) in response to the push of the pushing structure (40), and the second stop portion (22) and the fourth stop portion (32) stop the pushing structure (41); and when the pushing structure (41) rotates in the second rotating direction (R2), the second stop portion (22) and the fourth stop portion (32) fit the peripheral portion (11) in response to the push of the pushing structure (40), and the first stop portion (21) and the third stop portion (31) stop the pushing structure (41).