Double Flap Door Opening Device With Articulated Quadrilateral
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Solution Overview
Problem
Existing double flap door opening/closing devices, based on the articulated quadrilateral principle, constrain the top and bottom parts to be hinged together, limiting their movement and imposing aesthetic and functional constraints on furniture design.
Innovation Solution
An opening/closing device for a double flap door where the top and bottom parts are not hinged to each other, utilizing an articulated quadrilateral mechanism that allows independent rotation of the top part with respect to the furniture item and concomitant rotation of the bottom part, enabling varied positions and orientations of the door parts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the two parts of the flap door are hinged to each other, then the door parts assume an obligatory position, but this imposes aesthetic and functional constraints on furniture design
Solution Approach 1:
The invention divides the door system into two independent parts (top part and bottom part) that are not hinged to each other. Each part can be independently controlled by separate opening/closing means, allowing them to assume different positions and orientations simultaneously, thereby eliminating the obligatory positioning constraint while maintaining structural stability
Solution Approach 2:
The opening/closing device is designed to provide multiple functions: it can hold the door parts in various positions (open, closed, intermediate), orientations (horizontal, vertical, oblique), and configurations (parallel, non-parallel). This multi-position capability transforms the system from a single-function hinge mechanism to a versatile positioning system that adapts to different aesthetic and functional requirements
2Stability of the object's composition
If the top part is hinged to the edge of the furniture item, then the sides of the door parts must be horizontal and parallel to the edge, but this limits movement freedom
Solution Approach 1:
The invention replaces static hinged connections with dynamic opening/closing means that can actively adjust and maintain door parts in various positions. The system transitions from a fixed geometric constraint (horizontal and parallel alignment) to a dynamic control system that can adapt to different positions including oblique and non-parallel orientations while maintaining stability
3Ease of manufacture
If the two parts of the flap door fold over one another in the open position, then the hinge forms an articulation point, but this constrains the door to specific positions
Solution Approach 1:
The invention eliminates the hinge connection between door parts and replaces it with independent opening/closing means for each part. This segmentation allows each door part to be controlled independently, enabling them to assume different positions and orientations simultaneously rather than being constrained to fold over one another in a fixed configuration
Solution Approach 2:
The invention introduces intermediate opening/closing means as mediators between the door parts and the furniture item. These intermediaries replace the direct hinge connection and provide flexible control over door part positions, allowing oblique and non-parallel orientations that were not possible with direct hinging
Data Source
AI summary
An opening/closing device for a double flap door of an item of furniture, wherein the top part and the bottom part of the door are not hinged to each other. The device is connected to the furniture item to cause the top part of the door to rotate with respect to the furniture item and an articulated quadrilateral causes the bottom part of the door to rotate with respect to the top part concomitantly with the rotation of the top part of the door with respect to the furniture item. The articulated quadrilateral includes a first and a second arm each having one end hinged to the bottom part of the door and the other end hinged to the device.