Adjustable Hinge Assembly with Movable Pin for Alignment
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Solution Overview
Problem
Hinge assemblies often face performance issues due to offset alignment between doors and doorframes, which can change over time, leading to suboptimal performance.
Innovation Solution
An adjustable hinge assembly with a movable hinge pin and adjustment member, allowing for precise alignment adjustments between the first and second hinge leaves, using screws to fix the pin's position within elongated knuckle holes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed hinge assembly is used to connect the door to the doorframe, then the structure is simple and stable, but the alignment between the door and doorframe cannot be adjusted when offset occurs
Solution Approach 1:
The hinge pin is made movable within elongated knuckle holes instead of being fixed, allowing the hinge assembly to dynamically adjust the door position. The pin can be repositioned along the elongated holes to correct alignment offsets, transforming a static structure into an adjustable one.
Solution Approach 2:
The hinge leaf is divided into separate components: the leaf body, elongated knuckle holes, and a movable hinge pin. This segmentation allows the pin to be independently positioned and secured at different locations within the elongated holes, enabling precise alignment adjustment.
2Manufacturing precision
If the hinge pin position is fixed within the knuckle holes, then the manufacturing is simple, but the alignment precision deteriorates when offset occurs over time
Solution Approach 1:
The elongated knuckle holes are pre-formed with sufficient length to accommodate potential alignment offsets. This preliminary design allows the hinge pin to be repositioned within the existing holes to correct alignment issues without requiring manufacturing changes or additional components.
Solution Approach 2:
The hinge pin position parameter can be changed by moving the pin to different locations within the elongated knuckle holes. This parameter adjustment enables correction of alignment offsets while maintaining the same physical components, improving alignment precision without increasing complexity.
3Adaptability or versatility
If adjustment members and screws are added to enable hinge pin repositioning, then the alignment adjustability is improved, but the device complexity increases
Solution Approach 1:
The elongated knuckle holes serve multiple functions: they guide the hinge pin during installation, allow for position adjustment, and provide alignment tolerance. This multi-functionality reduces the need for separate adjustment mechanisms, balancing adjustability with simplicity.
Solution Approach 2:
The hinge assembly uses its own existing components (the elongated knuckle holes and hinge pin) to enable adjustment, rather than requiring entirely separate adjustment mechanisms. The structure serves its primary function while inherently providing adjustment capability.
Data Source
AI summary
An adjustable hinge assembly includes a first hinge leaf, a second hinge leaf hinge-coupled to the first hinge leaf, and a hinge pin. The first hinge leaf defines a first knuckle hole corresponding to the hinge pin, and the second hinge leaf defines a second knuckle hole corresponding to the hinge pin. The first hinge leaf is hinge-coupled to the second hinge leaf by the hinge pin, the first knuckle hole, and the second knuckle hole. The hinge pin is movable within the first knuckle hole to adjust a position of the first hinge leaf relative to the second hinge leaf.