Sliding Fire Door Guide Roller Group Gap Reduction
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Solution Overview
Problem
Conventional sliding fire doors experience reduced tightness of closure due to gaps between the door main body and the opening frame, leading to compromised sealing effectiveness and increased manufacturing costs.
Innovation Solution
The implementation of a guiding mechanism featuring a guide roller group with multiple guide rollers arranged along the slide direction, eliminating the need for rails and incorporating displacing mechanisms that move the door main body closer to the opening frame, thereby reducing gaps and enhancing closure tightness without increasing manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If guide rails are used to guide the door main body, then the door can be smoothly moved along the slide direction, but the manufacturing cost increases
Solution Approach 1:
The patent extracts and removes the guide rails from the system, replacing them with a guide roller group that directly guides the door main body along the slide direction without requiring external rail structures, thereby reducing manufacturing cost while maintaining smooth movement
Solution Approach 2:
The guide roller group serves multiple functions: it guides the door main body along the slide direction, supports the door weight, and enables smooth movement without requiring separate guide rails, combining multiple functions into a single component system
2Productivity
If a gap is formed between the door main body and opening frame, then resistance during movement is reduced, but the tightness of closure is reduced
Solution Approach 1:
The patent employs a displacing mechanism that dynamically adjusts the position of the door main body during movement. The mechanism allows the door to move smoothly with minimal resistance and automatically displaces the door closer to the opening frame when reaching the closing position, ensuring tight closure without requiring a permanent gap
Solution Approach 2:
The displacing mechanism performs preliminary action by pre-positioning the door main body to be closer to the opening frame before final closure. This preliminary displacement ensures that the door is optimally positioned for tight closure, eliminating the need for a continuous gap while maintaining smooth movement characteristics
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
This arrangement allows for smoother door movement and tighter closure of the opening, reducing manufacturing costs by eliminating the need for rails and enhancing the door's sealing effectiveness.
Implementation Method 1
guide rollers arranged one adjacent to another along the slide direction and which is configured to guide the door main body
Data Source
AI summary
A sliding fire door is disclosed with an improved tightness of the closure by the door main body. The sliding fire door includes an opening frame, a fire door, and a guiding mechanism. The guiding mechanism includes a guide roller group which includes a plurality of guide rollers arranged one adjacent to another along the slide direction and which is configured to guide the door main body. The guiding mechanism is configured to guide the door main body such that the door main body is moved from an opening position to a closing position. The door main body has a first opposing surface which is oriented toward the wall. The opening frame has a second opposing surface which is oriented toward the first opposing surface of the door main body in the closing position. The guiding mechanism moves the door main body to cause the first opposing surface to be moved closer to the second opposing surface when the door main body is moved from the opening position to the closing position.