| 摘要 |
The Rotational brake consists of: cylinders (1), main shaft (2), elastic ring (3) and one or more auxiliary shafts (4).The invention refers to a rotational brake with the potential to use, among others, in mosquito nets of horizontal or vertical motion that have a system of automatic return, allowing the controlled return, simple installation, smooth operation and safe use of the mosquito net, being a simple structure at the same time. The cylinders (1) in which motion is given, have one or more formed holes in which the one or more auxiliary shafts (4) passes and is dragged. The elastic ring (3) that by its elasticity pushes the main shaft (2) and the one or more auxiliary shafts (4) to come into close contact, result in the resistance in the rotation of the cylinders (1) in relation to the main shaft (2). The length, the width and the elasticity of the elastic ring (3), as well as the number of the auxiliary shafts (4) allow the regulating of the intensity of the above brake. Furthermore, intervening in the geometry of every hole of the cylinders (1), where the one or more auxiliary shafts (4) rotate, the increased braking by the one direction of relevant rotation of the cylinders (1) is allowed, as to the main shaft (2) and the reduced braking by the other direction. |
