Door Blocking Device with Elastic Wings and Trilobed Hollows
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Solution Overview
Problem
Existing door-blocking devices often require additional spring-like elements for secure locking and easy disengagement, which can be cumbersome and prone to operational issues under varying environmental conditions.
Innovation Solution
A door-blocking device comprising a male and female element with elastic wings and trilobed hollows, where the male element is shaped to fit within the female element's wings, utilizing bevels and dampening ribbings for smooth operation and impact absorption, and spacers for precise positioning and thickness compensation, eliminating the need for additional spring elements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spring-type fastening means are used to allow mutual snap engagement, then stable locking is achieved, but the device becomes more complex and prone to operational issues under varying environmental conditions
Solution Approach 1:
The patent removes the spring element from the door-blocking device, replacing the complex spring-type fastening means with a simpler elastic wing mechanism. The elastic wings are formed integrally with the female element, eliminating the need for separate spring components while maintaining the snap engagement function through the elastic deformation of the wings themselves.
Solution Approach 2:
The patent combines the spring function into the elastic wings that are integrally formed with the female element. Instead of having a separate spring component, the elastic wings serve both as the structural element and the spring mechanism, merging multiple functions into a single integrated component that reduces overall device complexity.
2Ease of operation
If spring-type fastening means are used for easy disengagement, then operational ease is improved, but the device becomes more complex and susceptible to environmental conditions
Solution Approach 1:
The patent eliminates the spring component that complicates the disengagement mechanism. The elastic wings provide the necessary rebound force for easy disengagement through their inherent elastic properties, removing the need for additional spring-type fastening means while maintaining operational ease.
Solution Approach 2:
The elastic wings automatically provide the rebound force needed for easy disengagement through their own elastic deformation. The wings themselves serve the dual function of providing both the locking force during engagement and the rebound force for disengagement, without requiring separate spring mechanisms or additional components.
3Reliability
If elastic wings with trilobed hollows are used, then stable engagement is achieved, but manufacturing precision requirements increase
Solution Approach 1:
The patent applies the trilobed hollow feature locally at the specific engagement point on the elastic wings, where it is most needed for stable engagement with the male element. This localized geometric feature provides enhanced engagement stability without requiring high precision throughout the entire component, as only the critical engagement surfaces need the specific trilobed geometry.
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 device provides stable locking and easy disengagement without the need for additional spring elements, ensuring smooth operation across different door types and environmental conditions, while being easy to install and resistant to impact damage.
Implementation Method 1
a pair of wings 3a, 3b which project from a planar surface 2a of the base. These wings 3a, 3b are obtained integrally with the base, by moulding of a plastic technopolymer which imparts thereto elastic flexibility features
Implementation Method 2
a pair of parallel dampening ribbings 5a, 5b; these ribbings are of a slightly greater length than the width of elastic wings 3a, 3b, so that the terminal portion 5' thereof, protruding by a short measure beyond the lateral edge of the wings - as barely visible in figure 2 - are capable of performing an impact dampening function
Data Source
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AI summary
The invention concerns a device apt to guarantee the stable blocking of a rotary or sliding door with respect to a fixed surface or frame, of the type consisting of a male element and of a female element, the latter being shaped so as to house said male element and retain it in an easy detachable way. According to the invention, said female element comprises a pair of mu- tually spaced-apart, parallel, elastic wings, projecting from a support base, and said male element consists of a substantially spherical knob, having a diameter slightly larger than the dis- tance between said elastic wings, apt to snap engage between said elastic wings. Moreover, with said base of the female ele- ment and/or with said knob of the male element there are asso- ciate position adjustment means, for example in the shape of a square wing, and facilitated fastening means, for example in the shape of a single fastening screw.