Slide Guide Frame Counterweight for Lighter Screen Bar Operation
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Solution Overview
Problem
The existing screen device requires excessive operating force to close due to the coil spring's elastic restoring force, leading to a heavy and potentially unsafe operation, as the slide bar is always pulled toward the stationary frame, increasing the risk of forced sliding during opening.
Innovation Solution
Incorporating weights that move in the height direction with the slide guide frames to increase potential energy, thereby braking their reception and reducing the sliding speed and operating force, while also promoting development of the frames to decrease the force required for operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the coil spring is used to provide elastic restoring force for winding the screens, then the screens can be wound round the roller pipe, but the operating force becomes excessively large making the slide bar feel heavy
Solution Approach 1:
A weight is provided to move in a height direction interlocking with development and reception of the slide guide frames. The weight brakes reception of the slide guide frames owing to an increase in potential energy and promotes development of the slide guide frames owing to a decrease in potential energy, thereby counterbalancing the excessive elastic restoring force and reducing the operating force required.
2Extent of automation
If the slide bar is automatically slid at the time of opening due to the coil spring force, then the screen device opens automatically, but the slide bar may be slid forcibly threatening safety
Solution Approach 1:
The weight moves in a height direction interlocking with the slide guide frames, providing a counterbalancing force that controls the sliding speed of the slide bar during closure, preventing excessive force that could threaten safety while maintaining automatic opening functionality.
Solution Approach 2:
The potential energy of the weight changes as it moves in the height direction during development and reception of the slide guide frames, thereby dynamically adjusting the force balance to control the sliding speed and ensure safety during operation.
3Volume of moving object
If the slide guide frames are made bendable in one direction to enable development and reception, then the slide guide frames can be compact, but the structural stability may be compromised
Solution Approach 1:
The slide guide frames are formed by connection of a plurality of rigid units 6 to be bendable in one direction and not to bend in the other direction. This segmentation allows the slide guide frames to be compact while maintaining structural stability through the rigid units that prevent bending in the critical direction.
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 configuration decreases the operating force and sliding speed of the slide bar during closure, enhancing safety and providing a nimble operation feel by balancing the coil spring's force with gravitational force, allowing for smoother and controlled sliding.
Implementation Method 1
the weight brakes reception of the slide guide frames owing to an increase in potential energy
Implementation Method 2
a weight is provided to move in a height direction interlocking with development and reception of the slide guide frames
Implementation Method 3
the weight promotes development of the slide guide frames owing to a decrease in potential energy
Implementation Method 4
the roller pipe rotating and sliding in the sliding direction of the slide bar to accumulate an elastic restoring force in the coil spring
Data Source
AI summary
A weight moving in a height direction interlocking with development and reception of a slide guide frame is provided, and the weight brakes reception of the slide guide frame owing to an increase in potential energy and promotes development of the slide guide frame owing to a decrease in potential energy, whereby an operating force is decreased, a feeling of operating a slide bar is made light, and the slide bar is decreased in sliding speed at the time of closing to achieve an improvement in safety.