Spring Hinge Assembly Tool for Offset Panel Alignment
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Solution Overview
Problem
Existing spring-loaded hinges face challenges in achieving quick and precise alignment with boxed uprights during assembly, particularly when a substantially offset assembly is required, leading to misalignment and movement errors.
Innovation Solution
A spring-loaded hinge with coaxial and overlapping constituent wings, featuring a tangential groove and an assembly tool with supporting walls, ensures quick and precise alignment by maintaining the panel flush with the frame structure and facilitating easy assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional hinges are used with offset assembly for boxed uprights, then the hinge can be installed on non-standard configurations, but misalignment and movement errors occur between the panel and frame
Solution Approach 1:
The hinge is divided into two separate constituent wings (first and second wings) that can be independently positioned and assembled. This segmentation allows each wing to be precisely aligned with its corresponding mounting surface (frame and panel), enabling accurate alignment even in offset configurations while maintaining adaptability to various installation scenarios
Solution Approach 2:
A dedicated assembly tool acts as an intermediary device during the installation process. This tool temporarily holds the hinge components in the correct offset position and provides reference surfaces for alignment, ensuring that the first and second wings are precisely positioned relative to each other and to the frame/panel before final assembly, thereby eliminating alignment errors
2Stability of the object's composition
If the hinge spring is pre-loaded during assembly to keep the hatch closed, then the hinge can maintain stable position at rest, but the assembly process becomes complex and time-consuming
Solution Approach 1:
The assembly tool is designed to pre-position the hinge components and pre-load the spring mechanism before the hinge is installed on the final application. By performing the spring pre-loading action during the manufacturing/assembly phase rather than during installation, the actual installation process becomes simpler and faster while still achieving the required stable closed position
Solution Approach 2:
The hinge design incorporates features that allow the spring to self-load and self-position within the hinge mechanism during the assembly process. The tangential groove and cavity geometry enable the spring terminals to automatically engage and preload the spring as the wings are assembled, reducing the need for complex external pre-loading equipment or procedures
3Productivity
If quick assembly is achieved using simplified hinge design, then installation time is reduced, but alignment precision and movement accuracy deteriorate
Solution Approach 1:
The assembly tool serves as a temporary intermediary fixture that provides precise alignment references and constraints during the quick assembly process. It holds the first and second wings in the correct relative position and ensures proper alignment with the frame and panel, allowing fast installation without sacrificing precision. Once assembled, the tool is removed, leaving the hinge with accurate alignment achieved through the tool's guidance
Solution Approach 2:
The hinge features localized precision elements such as the tangential groove with specific geometry, precisely positioned cavities for spring terminals, and reference surfaces on the assembly tool. These local quality features ensure accurate alignment at critical points (spring engagement, wing positioning) while the overall assembly process remains simple and fast, achieving precision where needed without complex overall design
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 hinge achieves perfect alignment and stable movement between the panel and frame, ensuring no movement errors and efficient assembly, even in offset configurations.
Implementation Method 1
surrounded by a spring, said pivot and said spring being suitable for engagement with the cavity of said other constituent wing
Implementation Method 2
on the base surface of said internal cavity a tangential groove for housing the terminal appendage of said spring
Implementation Method 3
an assembly tool constituted by a substantially C-shaped body, from one of the short sides of said 'C' vertically extending—for about half a height—a pair of supporting walls as high as one of said constituent wings
Data Source
AI summary
A hinge of the type including two coaxial, overlapping constitutive wings, each of the constitutive wings being constituted by a body having an ogive profile in which a cavity is internally obtained, wherein one of the constitutive wings carries a pin of smaller diameter in a stable engagement inside the cavity, surrounded by a spring, the pivot and the spring being suitable for engagement with the cavity of the other constituent wing, the coaxial constituent wings having on the base surface of the internal cavity a tangential groove for housing the terminal appendage of the spring.