Switchable Valve Coupling Element Jamming Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In switchable valve train components for internal combustion engines, existing coupling arrangements can jam due to slight rotating or tilting of the slide, leading to increased wear and operational failures, requiring complex and costly countermeasures to prevent tilting.
Innovation Solution
A movable coupling element with a flattened surface engages with a locking contour featuring recesses that allow it to rotate slightly, preventing jamming and enabling automatic orientation back to the coupling position, thus simplifying and economizing the construction by using rounded sections and slots for force transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a slide is used for coupling in a longitudinal hole, then coupling is enabled, but the slide can become jammed due to slight rotating or tilting
Solution Approach 1:
The patent applies curvature by replacing the flat sliding surface with a rounded section. The coupling element engages with the locking contour through a rounded surface that allows automatic orientation and prevents jamming by eliminating sharp edges and flat surfaces where tilting could occur. This curved geometry enables smooth engagement even when the coupling element is slightly rotated or tilted during operation.
2Reliability
If the coupling element is constructed to prevent tilting, then jamming is prevented, but the construction becomes complicated and cost-intensive
Solution Approach 1:
The patent implements self-service through the automatic orientation feature. The rounded section of the locking contour causes the coupling element to automatically rotate and align itself during engagement, eliminating the need for complex external mechanisms or precise pre-positioning. The system self-corrects any initial misalignment or tilting, providing reliable coupling without complicated construction.
3Ease of manufacture
If a flat coupling surface is used, then manufacturing is simple, but the coupling element can tilt and jam
Solution Approach 1:
The patent maintains manufacturing simplicity while preventing jamming by using a rounded section instead of a flat surface. This curved geometry can be easily formed through standard manufacturing processes like stamping or molding, and it inherently prevents tilting and jamming by providing a self-aligning engagement surface that guides the coupling element into proper orientation.
Data Source
AI summary
An arrangement for coupling two components that can move relative to each other in a switchable valve train component for an internal combustion engine is provided, with a coupling element (3) that can be moved for coupling the components with a flattened coupling surface (5) for contacting a corresponding locking contour. The locking contour has recesses (7) in which the coupling element (3) can engage so that it can move in contact with the locking contour for coupling with its coupling surface (5) in a position slightly rotated relative to a predetermined coupling position.