Long Arm Hinge with Four-Bar Linkage and Shock Absorbing Spacers
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Solution Overview
Problem
Standard millwork and cabinetry hardware, such as recessed hinges, are not designed for heavy use or high security applications, leading to frequent replacement, maintenance, and adjustment due to wear and misalignment under heavy loads and frequent usage.
Innovation Solution
A hinge design featuring a four-bar linkage with uniquely shaped interlocked plates and shock-absorbing spacers, allowing for resilient connection and adjustable positioning to withstand heavy loads and forces, while providing durable and precise motion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard millwork hinges are used in heavy-duty applications, then installation is simple and initial cost is low, but the hinges suffer from frequent wear, misalignment, and failure under heavy loads and frequent usage
Solution Approach 1:
The hinge link is divided into multiple plates (first plate, second plate, third plate) that are separably connected through hinge eyes and pins. This segmentation allows each component to be independently manufactured and replaced, improving reliability while managing complexity through modular construction.
Solution Approach 2:
The hinge employs a nested structure where hinge eyes are formed by rolling the flat sheet into cylindrical shapes, and pins are inserted through these nested hinge eyes to create a compact, space-efficient assembly that maintains strength.
2Stability of the object's composition
If traditional hinge designs with clearance gaps are used, then manufacturing is easier and assembly is simpler, but unwanted movement and deflection occur under heavy loads
Solution Approach 1:
The hinge design anticipates heavy loads by incorporating overlapping plates with intentional engagement between their edges. This overlapping structure acts as a cushioning mechanism that absorbs and distributes forces before they can cause misalignment or damage to the hinge components.
Solution Approach 2:
The hinge link is constructed from multiple plates made of heavy-gauge material that are combined to form a composite structure. This composite construction provides enhanced strength and rigidity to resist deflection under heavy loads while maintaining manufacturing feasibility through standard metalworking processes.
3Strength
If hinge components are designed for heavy-duty use with multiple plates and interlocking mechanisms, then durability and load capacity improve, but installation and maintenance become more complex
Solution Approach 1:
The hinge is segmented into modular components (hinge cup, hinge body, hinge arm, hinge link with multiple plates) that can be assembled in a standardized sequence. This segmentation enables workers to install and maintain the hinge in discrete steps, reducing the complexity burden despite the enhanced strength provided by multiple plates.
4Duration of action of stationary object
If conventional hinge designs are used, then manufacturing costs are lower and production is simpler, but frequent replacement and maintenance are required due to wear and failure
Solution Approach 1:
The overlapping plate design with intentional engagement creates a cushioning effect that distributes and absorbs forces before they can cause wear or failure. This beforehand cushioning mechanism significantly extends the service life of the hinge by preventing the cumulative damage that would otherwise require frequent replacement.
Solution Approach 2:
The hinge components are designed with preliminary protective features such as overlapping edges and engagement mechanisms that are built-in during manufacturing. These preliminary actions prevent wear and misalignment before they can occur during use, thereby extending service life without adding complex assembly steps.
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 design enhances durability and reduces wear by absorbing shocks and vibrations, preventing deformation and misalignment, thus extending the lifespan of the hinges and simplifying installation and maintenance.
Implementation Method 1
The spacers are sized to a press fit between the plates to create a resilient connection between the hinge link and the hinge body
Implementation Method 2
The design enhances durability and reduces wear by absorbing shocks and vibrations
Data Source
AI summary
Disclosed is a long arm quick release hinge comprised of a hinge cup pivotally connected to a hinge body with a hinge pin via a hinge arm and a link in a four-bar linkage arrangement. The link is a collection of plates with interlocking projections and indentions arranged adjacent to each other and separated by resilient shock absorbing spacers. The hinge body is adjustably connected to a connecting plate with an overlay screw and an adjustment screw.