Sliding Furniture Hinge for Tool-Free Folding Door Assembly
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Solution Overview
Problem
Existing hinges for furniture with folding doors are difficult to assemble and disassemble alone, requiring manual alignment, lifting, and screwing, which can lead to finger injuries and damage to fixing elements, especially with heavy and large doors.
Innovation Solution
The hinge design includes a main body with a linear slider and receiving members that allow for transverse sliding, enabling easy alignment and connection without tools, using a spring-loaded locking mechanism for secure attachment and easy disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional hinges with pins and positive locking elements are used, then secure connection is achieved, but assembly and disassembly become difficult and dangerous requiring multiple persons
Solution Approach 1:
The hinge transitions from a static pinned connection to a dynamic sliding connection. The outer hinge portion slides longitudinally along the inner hinge portion during assembly, then locks in position. This dynamic mechanism allows single-person operation while maintaining secure connection through the sliding lock rather than requiring manual pin insertion and tool-based screwing.
Solution Approach 2:
The hinge incorporates self-aligning and self-locking features. The sliding connection automatically aligns the door with the furniture carcass during insertion, and the locking mechanism secures itself without requiring additional tools or persons. The design eliminates the need for external assistance by integrating alignment and locking functions into the hinge mechanism itself.
2Shape
If folding doors are connected with small gaps for aesthetic reasons, then visual appearance improves, but finger safety deteriorates due to risk of jamming
Solution Approach 1:
The hinge acts as an intermediary mechanism between the door and furniture carcass. Instead of directly inserting fingers into the narrow gap to hold the door during assembly, the sliding hinge mechanism provides a safe interface where the door is guided and secured by the hinge structure itself, eliminating the need to reach into dangerous gaps.
3Device complexity
If heavy folding doors are assembled without additional support, then assembly simplicity improves, but positioning accuracy deteriorates making alignment difficult
Solution Approach 1:
The hinge incorporates preliminary alignment features in its design. The sliding connection and receiving devices are pre-configured to guide the outer hinge portion into correct position relative to the inner hinge portion. This preliminary structural arrangement ensures accurate alignment is achieved automatically during the assembly process without requiring complex external positioning equipment or procedures.
Data Source
AI summary
A hinge, in particular for a piece of furniture, comprises an inner hinge portion that can be attached to the furniture carcass or to a door hinged to the carcass, an outer hinge portion that can be attached to an outer door, a connecting device that connects the inner hinge portion to the outer hinge portion so that they can pivot relative to each other by three receiving members. The inner hinge portion has a main body that can be attached to the furniture carcass or to a door hinged to the furniture carcass. A lower receiving member is movable, preferably slidable, relative to an upper receiving member which is mounted, preferably rigidly, on the main body.