Adjustable Hinge Eccentrics for Two-Wing Folding Flap
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Solution Overview
Problem
Existing lifting devices for two-leaf folding flaps require a handle to be grasped at a certain distance from the lower edge to open, limiting user convenience, and lack adjustability in lateral alignment and distance between the wings.
Innovation Solution
The integration of adjustable hinges with eccentrics and an intermediate plate allows for adjustment in two coordinate directions, enabling the hinge arm to be rotated and displaced relative to the hinge cup, facilitating opening by pulling the lower edge without a handle and allowing for adjustable alignment and spacing between the wings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a handle is provided at a certain distance from the lower edge to open the folding flap, then the lifting device can be operated, but user convenience is limited as the handle cannot be grasped at the lower edge itself
Solution Approach 1:
The lower edge of the lower wing itself serves as the gripping point for opening the folding flap. The lifting device is designed so that the lower edge can be directly pulled to initiate opening, eliminating the need for a separate handle component and making the structure serve its own function.
Solution Approach 2:
The handle function is extracted from the lifting device structure and integrated into the lower edge of the lower wing itself. By removing the need for a separate handle component, the design simplifies the overall structure while maintaining the opening function.
2Adaptability or versatility
If fixed hinges are used to connect the wings, then the structure is simple, but adjustability in lateral alignment and distance between wings is not possible
Solution Approach 1:
The hinge connection is transformed from a fixed, static joint to a dynamic, adjustable connection. The hinge arm can be positioned at different locations on the wing and laterally aligned in two coordinate directions, allowing the hinge to adapt to different spatial requirements while maintaining structural integrity.
Solution Approach 2:
The hinge assembly serves multiple functions: it connects the wings, allows for lateral alignment adjustment in two directions, enables distance adjustment between wings, and provides play for smooth operation. This multi-functionality replaces what would otherwise require separate adjustment mechanisms.
3Adaptability or versatility
If the hinge arm is rigidly fixed to the wing, then the connection is strong, but lateral alignment and distance adjustment between wings cannot be achieved
Solution Approach 1:
The hinge connection is segmented into multiple components: the hinge cup, the hinge arm, and the connection to the wing. This segmentation allows the hinge arm to be adjustably positioned and laterally aligned relative to the hinge cup while maintaining a strong connection through the lever arms and pivot points.
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
Enables convenient opening of the folding flap by pulling the lower edge, providing adjustability in wing alignment and spacing, enhancing user experience and adaptability to different furniture configurations.
Implementation Method 1
a compression spring element, one end of which is pivotably connected to the body part and the other end is pivotably connected to the shorter lever arm
Implementation Method 2
the hinge arm can be adjusted with respect to one of the hinge cups via a first eccentric in one direction and via a second eccentric in another direction perpendicular to the first direction
Data Source
Figure 1
Figure 2
Figure 3~5
AI summary
The present invention relates to a lifting device for a two-wing folding flap (16), the upper wing (12) of which is articulated on a top wall (22) or intermediate wall of a body about a horizontal, first axis and the lower wing (14) of which is connected to the upper wing in a manner such that it can pivot about a second axis parallel to the first axis, the lifting device comprising at least one two-armed lever (34) which is mounted on a lateral body part in a manner such that it can pivot about a horizontal pivot axis (40) and the longer arm of which is connected in an articulated manner to the lower wing and to at least one hinge arm (31) which connects the wings in an articulated manner and is fastened in each case in hinge cups (28, 29) arranged in the wings, wherein the hinge arm can be adjusted with respect to a hinge cup in one direction via a first eccentric (48) and in another direction perpendicular to the first direction via a second eccentric (50).