Hinge with Segmented Axle Unit for Easy Assembly
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Solution Overview
Problem
Conventional hinges require complex machining of inner surfaces to mount operating shafts, making assembly difficult and prone to errors.
Innovation Solution
The hinge design includes a leaf unit with barrels and action units that are co-rotatable, featuring a fixing member and axle constituents, allowing for easy assembly and operation without the need for complex mounting structures on the second leaf, facilitating smooth rotation and actuating force generation between leaves.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If mounting structures are formed on the inner surrounding surface of the second leaf to co-rotatably mount the operating shaft, then the operating shaft can be mounted to the second leaf, but the machining difficulty increases and assembly becomes complex
Solution Approach 1:
The mounting function is segmented from the second leaf body. Instead of forming mounting structures directly on the second leaf, a separate mounting component is introduced that interfaces with both the operating shaft and the second leaf, simplifying the machining requirements of the leaf itself while maintaining the co-rotatable mounting function.
Solution Approach 2:
A mounting component acts as an intermediary element between the operating shaft and the second leaf. This intermediate component provides the necessary mounting interfaces without requiring complex machining on the second leaf, thereby reducing manufacturing difficulty and assembly complexity.
2Ease of operation
If complex mounting structures are formed on the inner surrounding surface of the second leaf, then the operating shaft can be co-rotatably mounted, but the assembly process becomes difficult and error-prone
Solution Approach 1:
The mounting function is separated from the second leaf, allowing the use of standardized mounting components that are easier to assemble. This segmentation reduces the skill level required for assembly and minimizes the risk of assembly errors, thereby improving both ease of operation and reliability.
Solution Approach 2:
The mounting component serves as an intermediary that simplifies the assembly process. By providing pre-formed mounting interfaces, it reduces the difficulty of assembly and improves accuracy, making the assembly process more reliable and less error-prone.
3Productivity
If the operating shaft is co-rotatably mounted to the second leaf with complex mounting structures, then the hinge can function, but the time required for assembly increases
Solution Approach 1:
By segmenting the mounting function into a separate component, the assembly process becomes more modular and faster. The simplified mounting structures reduce the time required for installation and alignment, thereby improving productivity and reducing assembly time loss.
Solution Approach 2:
The mounting component as an intermediary enables faster assembly by providing pre-configured interfaces. This intermediate element eliminates the need for time-consuming machining and complex alignment procedures, thereby increasing assembly speed and reducing time loss.
Data Source
AI summary
A hinge includes a leaf unit, first and second action units and an axle unit. The leaf unit includes first and second leaves that are rotatable relative to each other. The first leaf has a first barrel. The second leaf has a second barrel. The first and second action units are co-rotatable with the first leaf. The axle unit includes a fixing member mounted in the second barrel and co-rotatable with the second leaf, and first and second axle constituents respectively associated with the first and second action units and co-rotatable with the fixing member.