Stable inner controller of shutter (combination of upper and lower hanging counterweight)

Abstract

1. The name of the design product: the stable type of inner controller of the shutter (combination of upper and lower hanging counterweight). 2. The use of the design product: for lifting and turning control of the inner shutter of the hollow glass shutter. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 perspective view. 5. Design 1 is designated as the basic design. 6. Other conditions that need to be explained: designs 1 and 2 are both increased with hoops for enhancing the stability of the connection between the upper and lower counterweights, which can be reflected in the local enlarged view of design 1 and 2, A and B.

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