Eccentric Hinge Offset Alignment for Window Sash Installation
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Solution Overview
Problem
Existing door and window hinges with vertically aligned fixing rods and rails face installation precision issues due to non-aligned centerlines, leading to potential errors in the alignment of window sashes and frames.
Innovation Solution
An eccentric hinge design featuring a rail, stop block, fixing rod, sliding block, connecting rod, and transmission rod, where the fixing rod and rail centerlines are parallel in the same plane with a controlled distance, allowing for precise alignment and adjustment using an adjusting assembly to facilitate smooth installation and alignment of window sashes and frames.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the fixing rod and rail centerlines are vertically aligned (first centerline overlaps second centerline), then processing control is convenient, but installation precision between window sash and window frame deteriorates due to non-aligned notches
Solution Approach 1:
The hinge introduces an adjustable mechanism that allows the fixing rod to be positioned at different distances from the rail centerline. The adjusting assembly enables dynamic repositioning of the fixing rod along the rail, transforming a static aligned design into a dynamic adjustable system that can adapt to different installation requirements and compensate for manufacturing tolerances in both processing and installation phases
Solution Approach 2:
The invention changes the parameter of the distance between the fixing rod centerline and rail centerline from a fixed zero value (aligned design) to a variable value within a specific range (0-10mm). This parameter change allows optimization of both processing convenience and installation precision by selecting appropriate offset distances based on actual installation conditions
2Manufacturing precision
If the fixing rod centerline is offset from the rail centerline by 0-10mm, then installation precision between window sash and window frame is improved, but hinge structural complexity increases due to additional adjusting components
Solution Approach 1:
The adjusting assembly is nested within the existing hinge structure, with the fixing rod positioned within the rail and the adjusting mechanism integrated into the connection between these components. This nesting approach minimizes the increase in overall structural complexity while enabling the required adjustment functionality
Solution Approach 2:
The invention introduces an intermediary adjusting assembly that mediates between the fixed rail and the movable fixing rod. This intermediary mechanism provides the necessary adjustment capability without requiring complete redesign of the hinge system, thereby limiting the increase in structural complexity
Data Source
AI summary
An eccentric hinge includes a rail, a stop block arranged on a first end of the rail, a fixing rod parallel with the rail, a sliding block, a connecting rod and a transmission rod, where the sliding block is arranged on the rail; a first end of the connecting rod is connected with a second end of the rail; a second end of the connecting rod is connected with the fixing rod; a first end of the transmission rod is connected with the sliding bock; a second end of the transmission rod is connected with the connecting rod; when the eccentric hinge is in a closed state, a first centerline of the fixing rod and a second centerline of the rail are parallel lines in a same plane; and a distance between the parallel lines is greater than 0 mm and less than or equal to 10 mm.