Curtain structure that can be rolled up in both directions

Abstract

A curtain structure capable of being rolled up and down in both directions includes: a curtain and a braking device. The braking device engages with one end of the curtain's roller and includes a rope winder and a rope damper. The rope winder has a base and a rope shaft. The base is connected to the rope shaft via a connecting shaft, which is connected to a fixed bracket. The rope damper is connected to the other end of the base. A rope winding gear, a driven gear, and an energy storage gear are sequentially arranged. The rope winding gear pre-winds a rope, and the other end of the rope is tensioned and connected to the rope shaft. A spiral spring is provided between the energy storage gear and the driven gear. Accordingly, the base can rotate around the rope shaft in both forward and reverse directions, driving the rope to wind around the rope shaft, achieving the effect of normal use in both forward and reverse directions.

Claims

1. A curtain structure that can be rolled up in both directions, comprising: a curtain having a roller, two fixed brackets assembled at both ends of the roller, a curtain body wound around the outer periphery of the roller, and a lower rail connected to the end of the curtain body; At least one braking device is fitted into one end of the reel and connected to a fixed bracket. It includes a rope winder and a rope damper. The rope winder has a base and a rope shaft that rotate relative to each other. One end of the base has a through hole facing the end of the rope shaft, and one end of the rope shaft has a hole communicating with the through hole. A connecting shaft is connected to the hole through the through hole. The outer end of the connecting shaft has a non-circular connecting hole that connects to the fixed bracket. The rope damper is connected to the other end of the base that does not have a through hole. The rope damper has a housing, and a rope gear, at least one driven gear, and at least one energy storage gear are sequentially assembled inside the housing. The rope gear and the driven gear... The driving gear meshes with the winding gear, and the winding gear pre-winds a rope. The other end of the rope is taut and connected to the winding shaft. The driven gear meshes with the energy storage gear. A spiral spring is provided between the energy storage gear and the driven gear. One end of the spiral spring is connected to the energy storage gear and pre-wound to store energy, while the other end is connected to the driven gear. Accordingly, since the winding shaft is connected to the fixed bracket via the connecting shaft and does not rotate, while the base and the winding damper rotate around the winding shaft, the base can rotate around the winding shaft in both forward and reverse directions, driving the rope to wind around the winding shaft, thus achieving the purpose of normal operation of the braking device in both forward and reverse directions.

2. The reversible curtain structure as described in claim 1, wherein, The base and housing of the braking device are integrally formed.

3. The reversible curtain structure as described in claim 1, wherein, The base and housing of the braking device are assembled together.

4. The reversible curtain structure as described in claim 1, wherein, The base has a semi-open shaft receiving groove, in which the rope winding shaft is rotatably housed. The shaft receiving groove has a first opening and a second opening at both ends of the bottom. Each of the first and second openings has at least one guide wheel. The other end of the rope of the rope winding gear is stretched along the bottom of the shaft receiving groove and passes through the two guide wheels, and finally turns upward and connects to the rope winding shaft through the first opening.

5. A reversible curtain structure as described in claim 1, wherein, The shaft has a bearing member through a hole, and the connecting shaft contacts the bearing member before connecting to the shaft hole of the rope winding shaft.

6. A reversible curtain structure as described in claim 1, wherein, The outer diameter of the rope shaft is further provided with a ring for the rope body to be connected. The outer diameter of the rope shaft is provided with two limiting grooves symmetrically along the axial direction. The inner diameter of the ring is provided with two ribs symmetrically protruding and fitting with the two limiting grooves, thereby restricting the rotation of the ring body and its linear displacement along the rope shaft axis.

7. A reversible curtain structure as described in claim 1, wherein, The driven gear, energy storage gear, and spiral spring of the cord damper constitute a damping unit, which can be expanded into multiple damping units according to the size of the curtain. Each damping unit meshes and moves in sequence.

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