Three-Member Hinge with Segmented Pin for Heavy Door Adjustment
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Solution Overview
Problem
Heavy-duty hinges for large doors and windows face challenges in achieving precise and easy adjustments in multiple axes, particularly in vertical and lateral adjustments, which complicates the removal and reinstallation of the mobile frame without disassembling the hinge members associated with the fixed frame.
Innovation Solution
A three-membered hinge design with a middle hinge member featuring a bush with a radial protrusion for lateral adjustment and separate pin parts housed in blind housings, allowing for independent adjustment and removal of the mobile frame without affecting the other hinge members, along with vertical adjustment mechanisms, facilitates quick and easy installation and removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a three-membered hinge design with separate pin parts is used, then the mobile frame can be removed and reinstalled quickly without disassembling the fixed frame hinge members, but the structure becomes more complex with multiple pin parts and blind housings
Solution Approach 1:
The articulation pin is divided into two separate pin parts (first pin part and second pin part), each engageable with different hinge members. This segmentation allows the middle hinge member to be removed independently by releasing only the first pin part, while the second pin part remains engaged with the fixed frame hinge members, enabling quick removal and reinstallation without disassembling the entire hinge assembly.
Solution Approach 2:
The first pin part is extracted from the middle hinge member through the blind housing, allowing the middle hinge member to be detached from the mobile frame. This extraction mechanism enables selective removal of the mobile frame portion while leaving the fixed frame hinge members intact, significantly reducing removal and reinstallation time.
2Measurement precision
If adjustment mechanisms for lateral and vertical axes are added to the hinge, then precise positioning of the mobile frame is achieved, but the number of components and assembly complexity increases
Solution Approach 1:
The lateral adjustment mechanism (first adjustment means with radial protrusion and notch) and vertical adjustment mechanism (second adjustment means) are integrated into the middle hinge member structure. The radial protrusion on the bush engages with the notch in the tubular portion to define a pivot point for lateral adjustment, while the second adjustment means provides vertical positioning. This merging of multiple adjustment functions into a single hinge member reduces overall system complexity compared to having separate adjustment devices.
Solution Approach 2:
The middle hinge member serves multiple functions: it connects the mobile frame, provides lateral adjustment through the radial protrusion-notch engagement, provides vertical adjustment through the second adjustment means, and houses the blind housing for the pin parts. This multi-functionality reduces the need for separate components, thereby reducing overall device complexity while maintaining precise positioning capabilities.
Data Source
Figure 1~2
Figure 3
AI summary
A hinge (100) for heavy doors, windows or the like comprises: three separate hinge members (1, 2, 3), namely bottom, top and middle, of which two (1, 2) are associated with a fixed frame (4), and the middle one (3) is associated with a mobile wing (5); a pin (6) for the articulation of the three hinge members (1, 2, 3), defining an axis of rotation (Z) for the middle hinge member (3) and designed to be housed in three cylindrical portions (1b, 2b, 3b), that is to say, in three respective bushes (1c, 2c, 3c); adjustment means (7) acting on the middle hinge member (3) in such a way as to allow a lateral adjustment, in (X), of the axis of rotation (Z) of the mobile wing (5); the articulation pin (6) is composed of two separate pin parts (6a, 6b) which can be housed, respectively: the first pin part (6a) in the bottom hinge member (1) and, with an inside end of it (6c), in a blind housing (11) in a third bush (3c) of the middle hinge member (3), and the second pin part (6b) in the top hinge member (2) and, with an inside end of it (6d), in a blind housing (12) in the third bush (3c) of the middle hinge member (3); means (13) for fastening each inside end (6c, 6d) of the two pin parts (6a, 6b) to the third bush (3c) are positioned and operative on the ends (6c, 6d) from the outside of the middle hinge member (3). [Figure 2]