Sheet Metal Cabinet Hinge With Key-Actuated Lifting and Pressing
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Solution Overview
Problem
Existing hinges for removable sheet metal cabinet doors or panels lack an additional lifting and pressing function to enhance closing comfort and safety, particularly in high-pressure environments.
Innovation Solution
A hinge design incorporating a lifting device that engages around the hinge pin, supported by a latch-like tongue, allows perpendicular movement via a key, with slotted guide walls and a worm gear mechanism for separate raising and lowering movements, enabling a lifting or pressing function without affecting the hinge's primary function.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hinge provides only basic hinge and locking functions, then the structure remains simple, but closing comfort and safety in high-pressure environments are insufficient
Solution Approach 1:
The hinge is designed to perform multiple functions: basic hinging, locking via the tongue, lifting via the lifting device, and pressing via the pressing device. This multi-functionality allows a single component to address both simple hinge operations and complex high-pressure safety requirements, resolving the contradiction between reliability and structural complexity.
Solution Approach 2:
The lifting device and pressing device are integrated within the existing hinge structure, with the lifting device engaging around the hinge pin and the pressing device utilizing the tongue mechanism. This nested arrangement adds functionality without proportionally increasing external complexity, maintaining compactness while enhancing reliability.
2Adaptability or versatility
If a lifting device is added to the hinge, then lifting and pressing functions are enabled, but the device complexity increases
Solution Approach 1:
The lifting device and pressing device are merged with the existing hinge components. The lifting device uses the hinge pin as a guide, and the pressing device uses the tongue mechanism already present for locking. This merging approach enables additional functions while minimizing the increase in overall device complexity.
Solution Approach 2:
The hinge transitions from a static structure to a dynamic system where the lifting device can be actuated to raise or lower the door, and the pressing device can be engaged to apply pressure. This dynamic capability provides adaptability for different operational requirements without requiring a completely new design.
3Reliability
If the tongue is engaged to lock the hinge, then the hinge function is secured, but the lifting and pressing functions cannot be performed
Solution Approach 1:
The operation sequence is segmented into distinct phases: first the lifting device is actuated to raise or lower the door, then the tongue is engaged to lock the hinge in the desired position. This segmentation allows each function to be performed independently and reliably, with the locking mechanism securing the result of the lifting operation.
Solution Approach 2:
The lifting device is actuated in advance to position the door at the desired height or angle before engaging the tongue for locking. This preliminary action ensures that the door is properly positioned before the locking mechanism is engaged, maintaining both reliability and ease of operation.
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 provides enhanced closing comfort by allowing pressure relief and safety features, ensuring secure locking and separation of the hinge function when needed, thus improving usability and safety in high-pressure conditions.
Implementation Method 1
a latch-like tongue (26) which can be displaced against spring force (24)
Implementation Method 2
a link (18) supports a turntable (22) provided in the base area with a worm gear, into which worm gear a projection extending from the underside of the actuator is inserted
Data Source
Figure 1~2
Figure 3~4
Figure 5~7
AI summary
The invention relates to a hinge for hangable sheet metal cabinet doors or walls, comprising a first hinge part or frame part (16) that can be secured to the door or cabinet frame (34), and a second hinge part (10) or door hinge part that can be fixed to the door leaf or cabinet wall (38), which hinge parts are connected to one another in an articulated manner by means of a hinge pin (14), and having a latch-type tongue that is arranged in the second hinge part (10) such that it can move against a spring force (24), characterised by a lifting device (56) which encompasses the hinge pin (14) guided through finger-type ends of the first hinge part (16) and which centrally supports the hinge pin together with a hook retained by the door part, such that the lifting device (56) moves the encompassing part of the second hinge part (10) perpendicular to the plane of the door leaf or cabinet wall, via actuation (44), by means of a key (40), such as a double bit key.