Door-closing device for refrigeration cabinets
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Solution Overview
Problem
Existing door-closing devices for refrigeration cabinets with elastic elements, such as gas springs, are difficult to install due to the free rotation of brackets and components, requiring manual stabilization during installation, which slows down the process and increases installation time and cost.
Innovation Solution
A door-closing device with a first and second fixing bracket, a pin, and an elastic element where the axial ends are hinged with parallel and eccentric hinge axes, providing stability and allowing for easier installation by preventing free rotation of the gas spring, and enabling the device to be installed quickly and efficiently.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If gas spring is used with free rotation brackets, then automatic door closing function is achieved, but installation time increases due to manual stabilization requirement
Solution Approach 1:
The patent applies preliminary action by pre-configuring the mounting brackets with integrated positioning features (such as positioning pins or guide slots) that automatically align and stabilize the gas spring during installation. This preliminary structural preparation eliminates the need for manual stabilization, allowing the installer to simply attach the components without requiring additional holding or adjustment actions, thus reducing installation time while maintaining the automatic closing function.
Solution Approach 2:
The patent introduces an intermediary positioning mechanism (such as a positioning pin, guide slot, or alignment feature) that acts as a mediator between the mounting bracket and the gas spring. This intermediary element automatically establishes the correct relative position and orientation during installation, eliminating the need for manual alignment and stabilization, thereby reducing installation time while ensuring proper function.
2Reliability
If gas spring is used with free rotation brackets, then automatic door closing function is achieved, but installation complexity increases requiring manual holding of components
Solution Approach 1:
The mounting bracket is pre-configured with integrated positioning features (such as positioning pins, guide slots, or alignment lugs) that automatically establish the correct geometry between the bracket and the gas spring during installation. This preliminary structural preparation eliminates the need for manual alignment and holding operations, reducing installation complexity while maintaining the automatic door closing function.
Solution Approach 2:
An intermediary positioning mechanism (such as a positioning pin, guide slot, or alignment feature) is introduced as a mediator that automatically establishes the correct relative position and orientation between the mounting bracket and the gas spring. This intermediary element simplifies the installation process by eliminating manual holding requirements while ensuring proper function.
3Adaptability or versatility
If gas spring allows free rotation around sliding axis, then flexibility of movement is achieved, but stability during installation deteriorates requiring manual intervention
Solution Approach 1:
The mounting bracket incorporates pre-configured geometric constraints (such as positioned holes, guide slots, or alignment features) that automatically establish the correct spatial relationship between the bracket and the gas spring during installation. These preliminary structural features provide inherent stability during installation while preserving the gas spring's operational flexibility during door closure.
Solution Approach 2:
An intermediary positioning mechanism (such as a positioning pin, guide slot, or alignment feature) is introduced to mediate between the mounting bracket and the gas spring. This intermediary element provides automatic stabilization during installation by constraining the relative position, while allowing the gas spring to maintain its flexibility of movement during operational door closure.
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 solution results in a more robust and faster installation process, reducing costs and installation times while ensuring gentle door closure without strong impacts, and allows for standardization of production for both clockwise and counterclockwise rotations.
Implementation Method 1
an elastic element, which develops longitudinally along a longitudinal axis, is provided with a first axial end and an opposite second axial end and exerts an elastic force along said longitudinal axis
Data Source
AI summary
A door-closing device (45, 450) for refrigeration cabinets (10) provided with a wing (30) hinged to a refrigerated compartment (15) is described, said door-closing device (45, 450) comprising: a first fixing bracket (75, 750) adapted to be fixed to the compartment (15), a second fixing bracket (180) adapted to be fixed to the wing (30), a pin (115) rotatably associated with the first plate with respect to a rotation axis (R) and to which the second bracket (180) is rotationally integral, an elastic element (60), which develops longitudinally along a longitudinal axis, is provided with a first axial end (50) and an opposite second axial end (55) and exerts an elastic force along said longitudinal axis. Wherein the first axial end (50) is hinged to the first fixing bracket according to a first hinge axis (C1) which is parallel and eccentric to the rotation axis (R) of the pin (115), and wherein the second axial end (55) is hinged, according to a second hinge axis (C2), which is parallel and eccentric to the rotation axis of the pin (R), to an arm (165, 1650), which is rotationally integral with the pin (115) about the rotation axis (R).