Screen Guide Cover Structure to Prevent Wear and Debris Buildup
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Solution Overview
Problem
Existing screen apparatuses suffer from wear and tear of the lower-end portion of the screen due to repeated sticking-into and coming-out of needle-shaped parts, accumulation of foreign substances on the guide units, and loss of retention under external pressure.
Innovation Solution
A screen apparatus with a slide guide and a cover member, where the slide guide is bendable and includes a coil spring for maintaining linearity, and a cover member with a higher tip end to prevent wear and tear and foreign substance accumulation, while ensuring retention under external pressure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If needle-shaped parts are disposed in intervals to reduce complexity, then device complexity is reduced, but foreign substances can enter through gaps and accumulate on the bottom wall
Solution Approach 1:
A cover member is introduced as an intermediary component that bridges the gaps between needle-shaped parts. This cover member extends along the bottom wall and prevents foreign substances from entering the space between the side walls, while not interfering with the screening function of the needle-shaped parts.
2Reliability
If needle-shaped parts are used for retention, then retention function is provided, but wear and tear occurs on the screen's lower-end portion due to repeated sticking-into and coming-out
Solution Approach 1:
The cover member serves as a protective cushion that is positioned beforehand to prevent direct contact and friction between the needle-shaped parts and the screen's lower-end portion. By covering the bottom wall area, it reduces wear and tear on the screen material at the lower-end portion while maintaining the retention function.
3Adaptability or versatility
If the slide guide is made bendable to adapt to installation, then adaptability is improved, but foreign substances can accumulate on the upper surface of the bottom wall
Solution Approach 1:
The cover member acts as an intermediary barrier that covers the upper surface of the bottom wall where foreign substances would accumulate. It allows the slide guide to maintain its bendable structure for installation adaptability while preventing harmful foreign substance accumulation on critical surfaces.
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 effectively suppresses wear and tear of the screen's lower-end portion, prevents foreign substance accumulation, and maintains retention even under external pressure, enhancing the durability and functionality of the screen apparatus.
Implementation Method 1
a coil spring in which elastic force is accumulated when the slide bar slides towards the door stop frame is built in a rotatable roller pipe
Implementation Method 2
the pin of one of the guide units is fitted into the opening of the other of the guide units, allowing for pivotal movement of the one guide unit on the other guide unit
Implementation Method 3
the needle-shaped parts of the screen retaining member stick into a lower-end portion in the height direction of the screen, which is drawn from inside the storage frame and expands in the width direction, thereby preventing the lower-end portion of the screen from coming out of the slide guide
Data Source
Figure 1
Figure 2~3
Figure 4(a)~4(b)
AI summary
In a screen apparatus, a screen retaining member is attached to an inner side in a depth direction of one of side walls of each guide unit, a cover member is attached to an inner side in the depth direction of the other of the side walls of each guide unit, and a position in a height direction of a tip end on the inner side in the depth direction of a cover part of a cover member is higher than that in the height direction of each of tip ends on an inner side in the depth direction of needle-shaped parts of the screen retaining member.