Self-Locking Elastic Retaining Ring for High-Speed Shaft Assembly
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Solution Overview
Problem
Traditional split elastic retaining rings for high-speed shafts in electric vehicles are prone to detachment under centrifugal force, posing safety hazards and complicating automated assembly due to the need for additional locking mechanisms.
Innovation Solution
An anti-detachment elastic retaining ring with interlocking protrusions and inclined guide surfaces that allow self-locking and automatic resetting, featuring a simple structure suitable for automated assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional split elastic retaining rings are used for high-speed shafts, then the structure is simple and easy to manufacture, but the retaining rings are prone to detachment under centrifugal force at high speeds
Solution Approach 1:
The retaining ring is divided into a ring body and multiple independent locking protrusions that can independently engage with locking grooves. This segmentation allows the ring to maintain simplicity while achieving reliable locking through multiple discrete engagement points distributed around the circumference.
Solution Approach 2:
The locking protrusions are strategically positioned at specific locations around the ring circumference where centrifugal forces would most likely cause detachment. This local quality approach concentrates anti-detachment capability at critical points rather than requiring complex reinforcement throughout the entire structure.
2Reliability
If additional locking mechanisms are added to prevent detachment, then anti-detachment capability is improved, but assembly complexity and manufacturing cost increase
Solution Approach 1:
The locking protrusions are integrated directly into the retaining ring body as a unified structure, eliminating the need for separate locking mechanisms or additional components. This merging approach maintains ease of manufacture by producing a single-part component while achieving enhanced anti-detachment capability.
3Reliability
If traditional retaining rings require additional closing operations, then assembly steps increase, but locking reliability is improved
Solution Approach 1:
The locking protrusions are pre-formed during the ring manufacturing process, so no additional closing or locking operations are required during assembly. The ring is inserted in its locked state, eliminating extra assembly steps while maintaining locking reliability through the pre-configured engagement features.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The ring provides stability at high speeds, simplifies assembly by eliminating the need for locking mechanisms, and reduces manufacturing costs through a one-time machining process.
Implementation Method 1
when the retaining ring body expands outward from a locked state... Through the inclined guide surface, the retaining ring body is reset to the locked state from the detached state by a rebound force of the retaining ring body
Implementation Method 2
the two locking fitting surfaces are fitted and interlocked with each other, preventing the retaining ring body from expanding outward to a detached state
Data Source
AI summary
The provided is an anti-detachment elastic retaining ring capable of springing back for self-locking and a mounting method thereof. The anti-detachment elastic retaining ring includes a retaining ring body, where the retaining ring body is provided with an opening; corresponding to two sides of the opening, two ends of the retaining ring body respectively form a first end and a second end; the first end and the second end interlock with each other; corresponding to interlocking front end positions of the first end and the second end, front ends of the first end and the second end are respectively provided with a first connecting extension section and a second connecting extension section; and the first connecting extension section and the second connecting extension section extend laterally to form a first limiting protrusion and a second limiting protrusion, respectively.