Variable Center Hinge Bi-Fold Shutter Mechanism
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Solution Overview
Problem
Conventional bi-fold window shutters are inefficient and difficult to operate due to their clunky design, requiring additional mechanisms for opening and closing, and often protrude into the building interior, making them aesthetically unpleasing and requiring complex systems for operation.
Innovation Solution
An improved bi-fold shutter mechanism featuring a variable center hinge and roller assembly that shifts the force direction for easier operation, allowing the shutter to move more efficiently between open and closed positions, with the hinge point moving from the outer to the inner frame edge as the shutter opens, and utilizing a roller assembly to reduce friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If conventional bi-fold shutter mechanisms are used, then the shutter can block light and protect windows, but the mechanism is clunky and difficult to operate
Solution Approach 1:
The hinge mechanism transitions from a static fixed-center design to a dynamic variable-center design where the pivot point moves along the hinge axis. This dynamic adjustment optimizes the mechanical advantage throughout the shutter's range of motion, reducing operational effort and improving ease of use without adding complex components.
Solution Approach 2:
A roller assembly is introduced as an intermediary element between the shutter and the hinge mechanism. This roller reduces friction and wear during operation, smoothing the movement and making the shutter easier to open and close while protecting the hinge from excessive stress.
2Device complexity
If conventional bi-fold shutter mechanisms are used, then the shutter can open and close, but additional mechanisms and counterweights are required
Solution Approach 1:
The complex counterweight systems and additional balancing mechanisms traditionally required for bi-fold shutters are completely removed. The variable-center hinge design inherently balances the shutter throughout its motion range, eliminating the need for separate counterweights and simplifying the overall mechanism.
Solution Approach 2:
The hinge mechanism changes its effective pivot point parameter dynamically during operation. By adjusting the center of rotation along the hinge axis based on the shutter's position, the system optimizes mechanical advantage at each stage of motion, achieving smooth operation without additional balancing components.
3Shape
If conventional bi-fold shutters are used, then the shutter can provide shading, but it protrudes into the building interior and looks unsightly
Solution Approach 1:
The hinge mechanism is reoriented to operate parallel to the window plane rather than perpendicular to it. This dimensional change allows the shutter to fold back against the window or along the exterior frame, eliminating unsightly protrusions into the building interior while maintaining full shading functionality.
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 solution reduces the operational force needed to open and close the shutter, allowing it to rest in a fully closed position without binding, eliminating the need for additional counterweights and unsightly mechanisms, enhancing both functionality and aesthetics.
Implementation Method 1
utilizing a roller assembly to reduce friction
Data Source
AI summary
An improved bi-fold shutter that includes a more efficient coupling mechanism at a hinge point suited to facilitate opening and closing the bi-fold shutter with greater ease. In one embodiment, the shutter may be designed for a window such that the shutter, when closed, is relatively close to the face of the associated window, and when open, forms an awning or overhang. The shutter includes an improved coupling mechanism at a hinge point between a first shutter portion and a second shutter portion. The improved hinge point shifts a direction of force needed to maneuver the shutter when moving the shutter from one position to another. The shift in opening and closing force directions improves the efficiency by which the shutter can be operated. In some embodiments, the shutter may be hand-operated. In other embodiments, the shutter may be powered.