Roll-up Window Screen Connecting Device Track Guide
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Solution Overview
Problem
Conventional roller screens for doors and windows often experience wrinkling of the curtain mesh, especially near film strips, due to external impacts or strong winds, leading to uneven extension or retraction and potential irreversible creases.
Innovation Solution
The roll-up window screen incorporates a connecting device with a track formed by blocking pieces and a first blocking part, along with an extension piece on the roller with a groove, and a counterweight on the movable frame to stabilize the curtain mesh and prevent wrinkling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the cleaning brush strip is configured to be sufficient height for cleaning the mesh body, then the cleaning effect is improved, but the film strips are pushed causing wrinkling of the mesh body
Solution Approach 1:
A guide plate is introduced as an intermediary component between the cleaning brush strip and the mesh body. The guide plate receives the cleaning brush strip and guides it to contact only the mesh body surface without pushing the film strips, thereby mediating the interaction to achieve cleaning without wrinkling
Solution Approach 2:
The guide plate is designed with a specific local structure where the bottom surface contacts the mesh body while the side surface contacts the film strips. This local quality differentiation allows the cleaning brush to clean the mesh body without affecting the film strips, preventing wrinkling at the critical film strip regions
2Ease of operation
If the curtain mesh is pulled for extension, then the curtain mesh can be extended to provide shielding, but the mesh body is prone to wrinkling near the film strips due to external impact or strong winds
Solution Approach 1:
The guide plate is pre-installed at the outlet of the configuration space before the curtain mesh is extended. This preliminary action ensures that as the curtain mesh is pulled for extension, the guide plate is already in position to guide the mesh body and prevent wrinkling near the film strips from the outset
Solution Approach 2:
The guide plate acts as a mediator between the curtain mesh and the external environment during extension. It provides a guided path for the mesh body, preventing direct contact with the film strips that would cause wrinkling when the curtain is extended under external impact or strong winds
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 guides the curtain mesh into the side frames, preventing wrinkling and ensuring smooth operation, while the counterweight provides stability during extension and retraction, even under external impacts or strong winds.
Implementation Method 1
The movable frame is also provided with at least one counterweight
Data Source
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AI summary
A roll-up window screen and a connecting device thereof. The roll-up window screen comprises two side frames, a movable frame, a curtain mesh, a rolling mechanism, and a connecting device connected to the side frames. The rolling mechanism comprises a housing seat and a fixing seat connected to the housing seat. The housing seat is provided with an inner space, the inner space is provided with a roller, the roller is connected to one end of the curtain mesh and the other end of the curtain mesh is connected to the movable frame. The connecting device is arranged at two ends of the fixing seat and comprises a body and a first insertion part connected to the body. One side of the body extends to form a first blocking part, one end of the first blocking part extends to form at least one blocking piece part, and the blocking piece part and the first blocking part are arranged in parallel at intervals to form a track, so that the curtain mesh is guided to enter the side frame to prevent wrinkling.