Screen Device Bottom Lath Blocking Mechanism
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing screen devices fail to prevent the bottom lath from detaching when the tension on the tension strip or tension rope or tension cable on one side of the screen drops, leading to potential damage to the screen device and surrounding structures.
Innovation Solution
Incorporating a motor protection component that detects sudden changes in load and using blocking elements and profiles that ensure the bottom lath is blocked when the tension drops, preventing detachment and triggering the motor to stop and roll back up.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the bottom lath is guided by lath guides with displaceable lath guide elements, then the screen can be rolled up and down smoothly, but the bottom lath may still detach when tension drops on one side
Solution Approach 1:
The blocking element is positioned in advance to prevent the bottom lath from detaching before it can fly off the lath guides. This preliminary protective action counteracts the potential harmful effect of lath detachment caused by tension loss, while allowing normal rolling operation to continue uninterrupted.
2Reliability
If blocking elements are added to prevent bottom lath detachment, then safety is improved, but the device complexity increases
Solution Approach 1:
The blocking element is integrated into the existing lath guide structure, combining the guiding function and the blocking function into a single component system. This merging approach provides the necessary safety function while minimizing additional complexity and avoiding separate independent blocking mechanisms.
3Object-affected harmful factors
If the motor is equipped with a motor protection component, then damage from lath detachment is prevented, but the device complexity increases
Solution Approach 1:
The motor protection component acts as an intermediary safety mechanism that detects abnormal conditions (such as lath detachment) and triggers appropriate responses (stopping or reversing the motor). This intermediary component prevents direct harmful effects on the screen device while maintaining a relatively simple integration into the existing motor system.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
The present invention relates to a screen device, comprising a screen which can be rolled up onto and rolled down from a screen roller, a bottom lath (1), one or more lath guides (3) and a tensioning system to tension the screen in the roll-up and roll-down direction, said screen device being provided with a protection component to prevent the bottom lath (1) from becoming detached from the lath guides (3) when the tension of the screen on one of the lateral sides of the screen drops, in the form of a blocking element (7) which is provided at an end of the bottom lath (1) and a blocking profile (5) which extends along a lateral side of the screen.